Tests of a direct effect of childhood abuse on adult borderline personality disorder traits: a longitudinal discordant twin design

Genetic and environment influences on childhood victimization: a systematic review and meta-analysis

Childhood victimization is a key risk factor for poor mental and physical health. In order to prevent childhood victimization, it is important to better understand its underlying etiological factors. Childhood victimization is not randomly distributed in the population but occurs more often in the context of certain characteristics of the child, the family, and the broader environment. These characteristics may be both genetically and environmentally influenced, making genetically informative designs valuable to disentangle the etiological factors. Here we performed meta-analyses of the genetic and environmental influences on childhood victimization based on twin studies. We also tested whether genetic and environmental influences on childhood victimization vary depending on key features of victimization experiences including the reporter of victimization experiences, the type of victimization, and the age at exposure. Following PRISMA guidelines, a search for relevant literature was conducted using MEDLINE, APA PsycInfo, and Embase databases until September 2023. A meta-analysis based on 21 studies with 62,794 participants showed that genetic influences accounted for 40% of the variance in childhood victimization, shared environmental influences for 20%, and non-shared environmental influences for 40%. In addition, we found that genetic and environmental influences on victimization varied based on the reporter and the type of victimization, and the age at victimization. The quantitative summary of genetic and environmental influences provided by this study advances our understanding of the mechanisms underlying risk for childhood victimization and points to prevention targets for victimization and its health effects.

Betrayal Trauma and Personality Pathology: An Integrated Review

Personality pathology is a common and debilitating problem for many, and among the factors associated with personality pathology is trauma. Recent research on the association between personality pathology and trauma has highlighted the role of trauma perpetrated by a person whom the victim trusts and/or relies upon for support (i.e., betrayal trauma). There is an increasing number of studies on the association between betrayal trauma and a range of different forms of personality pathology, although neither these studies nor the more general bodies of the literature on which they draw (i.e., in both trauma and personality pathology) have been meaningfully integrated. The goals of this paper are threefold. We first review relevant theories and research on trauma (definition, diagnosis, and different typologies, including betrayal trauma) and personality pathology (conceptualization, risk factors). Second, we review and integrate research on the association between betrayal trauma and different forms of personality pathology (e.g. antisocial/psychopathic, borderline, histrionic, narcissistic, obsessive-compulsive, schizoid, and schizotypal). Finally, we use this integration to suggest directions for future research on and clinical application with respect to the intersection of betrayal trauma and personality pathology.

Borderline Personality Disorder Symptoms and Stressful Life Events: An Evaluation of Gene-Environment Interplay

Background

Borderline personality disorder (BPD) is associated with high rates of stressful life events (SLEs). It is unclear whether people who experience SLEs have more BPD symptoms after accounting for the effects of familial risk factors. Our aims in the current study were to 1) create a predictive model of BPD using stressors across age and contexts and 2) examine whether SLEs resulted in higher levels of BPD symptoms beyond the effects of genetic and environmental risk factors.

Methods

The sample comprised 2801 twins from the Norwegian Institute of Public Health Twin Panel. Poisson regression was used to explore which SLEs predicted BPD symptoms. Elastic net penalized regression was conducted to develop a predictive model for SLEs and BPD symptoms. Co-twin control analyses were performed to differentiate between environmental and genetic factors.

Results

SLEs experienced during childhood and adulthood were associated with BPD symptoms. A weighted polyevent risk score explained 22% of the total variation in symptoms. Shared environmental and heritable factors explained 31% and 47% of individual differences in BPD symptomatology, respectively. Measured SLEs explained 42% of the shared environmental risk for BPD. The predictive risk of SLEs for BPD was reduced when shared environmental and genetic factors were accounted for. However, SLEs increased risk of BPD symptoms beyond the effects of shared genetic and environmental factors.

Conclusions

BPD symptomatology following SLEs cannot fully be explained by genetic and shared environmental factors. The SLE-BPD symptoms associations were primarily due to selection by family environments. It is important to identify familial factors that lead to both SLEs and BPD symptoms. SLEs remained associated with BPD symptoms beyond genetic and environmental confounding.

Generalizable Links Between Borderline Personality Traits and Functional Connectivity

BACKGROUND

Symptoms of borderline personality disorder (BPD) often manifest during adolescence, but the underlying relationship between these debilitating symptoms and the development of functional brain networks is not well understood. Here, we aimed to investigate how multivariate patterns of functional connectivity are associated with borderline personality traits in large samples of young adults and adolescents.

METHODS

We used functional magnetic resonance imaging data from young adults and adolescents from the HCP-YA (Human Connectome Project Young Adult) (n = 870, ages 22-37 years, 457 female) and the HCP-D (Human Connectome Project Development) (n = 223, ages 16-21 years, 121 female). A previously validated BPD proxy score was derived from the NEO Five-Factor Inventory. A ridge regression model with cross-validation and nested hyperparameter tuning was trained and tested in HCP-YA to predict BPD scores in unseen data from regional functional connectivity. The trained model was further tested on data from HCP-D without further tuning. Finally, we tested how the connectivity patterns associated with BPD aligned with age-related changes in connectivity.

RESULTS

Multivariate functional connectivity patterns significantly predicted out-of-sample BPD scores in unseen data in young adults (HCP-YA ppermuted = .001) and older adolescents (HCP-D ppermuted = .001). Regional predictive capacity was heterogeneous; the most predictive regions were found in functional systems relevant for emotion regulation and executive function, including the ventral attention network. Finally, regional functional connectivity patterns that predicted BPD scores aligned with those associated with development in youth.

CONCLUSIONS

Individual differences in functional connectivity in developmentally sensitive regions are associated with borderline personality traits.

Adverse Childhood Experiences and Adult Mental Health Outcomes

Importance

Exposure to adverse childhood experiences (ACEs) has consistently been associated with multiple negative mental health outcomes extending into adulthood. However, given that ACEs and psychiatric disorders cluster within families, it remains to be comprehensively assessed to what extent familial confounding contributes to associations between ACEs and clinically confirmed adult psychiatric disorders.

Objective

To investigate whether associations between ACEs and adult mental health outcomes remain after adjusting for familial (genetic and environmental) confounding.

Design, Setting, and Participants

This Swedish twin cohort study used a discordant twin pair design based on monozygotic (MZ) and dizygotic (DZ) twins. A total of 25 252 adult twins (aged 18-47 years) from the Swedish Twin Registry born between 1959 and 1998 were followed up from age 19 years until 2016, with a maximum follow-up time of 39 years. Data were analyzed from April 2022 to November 2023.

Exposures

A total of 7 ACEs, including family violence, emotional abuse or neglect, physical neglect, physical abuse, sexual abuse, rape, and hate crime, were assessed with items from the Life Stressor Checklist-Revised in a web-based survey.

Main Outcomes and Measures

Adult (ages >18 years) clinical diagnosis of psychiatric disorders (ie, depressive, anxiety, alcohol or drug misuse, or stress-related disorders) were obtained from the Swedish National Patient Register.

Results

Of 25 252 twins included in the study (15 038 female [59.6%]; mean [SD] age at ACE assessment, 29.9 [8.7] years), 9751 individuals (38.6%) reported exposure to at least 1 ACE. A greater number of ACEs was associated with increased odds of any psychiatric disorder in the full cohort (odds ratio [OR] per additional ACE, 1.52; 95% CI, 1.48-1.57). The association remained but ORs per additional ACE were attenuated in DZ (1.29; 95% CI, 1.14-1.47) and MZ (1.20; 95% CI, 1.02-1.40) twin pairs. Individuals who were exposed to sexual abuse compared with those who were not exposed had increased odds of any clinically confirmed psychiatric disorder in all comparisons: full cohort (OR, 3.09; 95% CI, 2.68-3.56), DZ twin pairs (OR, 2.10; 95% CI, 1.33-3.32), and MZ twin pairs (1.80; 95% CI, 1.04-3.11).

Conclusions and relevance

This study found that associations between ACEs and adult mental health outcomes remained after controlling for shared genetic and environmental factors, which was particularly evident after multiple ACEs or sexual abuse. These findings suggest that targeted interventions may be associated with reduced risks of future psychopathology.

The impact of childhood trauma on borderline personality organization in a community sample of Greek emerging adults

There is limited research on the role of childhood trauma in personality pathology according to Kernberg's psychodynamic model of internalized object relations. Because childhood trauma reflects the disruptions of these relations, it is expected to predict borderline personality organization, especially at the threshold of adulthood. Therefore, the main aim of this retrospective study was to examine the impact of childhood trauma on borderline personality organization in a community sample of emerging adults. Participants were 543 Greek individuals aged 18-29 (M = 21.45; 58.6 % females; 85.1 % university students). They completed the Greek versions of the Traumatic Antecedents Questionnaire (TAQ) and the Inventory of Personality Organization (IPO), which were tested for their factorial structure, reliability, and measurement invariance across gender, as few empirical data exist on the psychometric properties of these measures. Confirmatory factor analyses showed that the TAQ consisted of four factors, namely positive experiences, abuse, traumatic life events, and family chaos. The five-factor theoretical structure of the IPO, namely primitive defenses, identity diffusion, reality testing, aggression, and moral values, was confirmed. Low to moderate links between childhood trauma and borderline personality organization were found, with stronger links emerging for abuse and family chaos. Structural equation modeling showed that the various forms of childhood trauma across the age periods studied (i.e., 0-6, 7-12, 13-18) significantly and differentially predicted the dimensions of borderline personality organization. The finding that stronger links emerged when trauma occurred in older ages may be attributed to the retrospective method of the study. Gender differences were also found; for example, personality pathology was more likely in men when abuse and traumatic life events occurred in younger ages and abuse was a more important risk factor for personality pathology in women. This study highlights the impact of childhood adversity on personality pathology in emerging adulthood, provides empirical support for Kernberg's psychodynamic model, and has useful implications for trauma-informed early screening, prevention, and intervention regarding personality pathology in young people. Limitations of this study and suggestions for future research are outlined.

Differentiating between intrapsychic symptoms and behavioral expressions of borderline personality disorder in relation to childhood emotional maltreatment and emotion dysregulation: an exploratory investigation

BACKGROUND

Borderline personality disorder (BPD) is a severe mental disorder, characterized by pronounced instability in emotions, self-image, and interpersonal relationships. Experiences of childhood maltreatment are among the risk factors for BPD. While self-damaging and aggressive acts often occur, not every person with the disorder shows markedly dysregulated behaviour. Internalized symptoms, such as shame, loneliness, and self-disgust tend to be more pervasive and persist after clinical remission.

OBJECTIVE

Here we investigated associations between BPD symptom severity, childhood maltreatment, and emotion regulation difficulties. We further explored if the Borderline Symptom List (BSL) could potentially be used to differentiate between internalized symptoms (intrapsychic strain) and externalized symptoms (dysregulated behaviours) in future research.

METHOD

187 women with at least mild BPD symptoms (65% having a diagnosis of BPD) completed the BSL 23 including its 11-item supplement (BSL-S), the Childhood Trauma Questionnaire (CTQ), and Difficulties in Emotion Regulation Scale (DERS). Participants further underwent a semi-structured clinical interview to assess BPD criteria (International Personality Disorder Examination, IPDE). Multivariate models and regression-based bootstrapping analyses were performed to test direct and indirect effects.

RESULTS

Childhood trauma severity, especially emotional abuse, positively predicted BPD symptom severity. A significant indirect effect through emotion regulation difficulties was found (k2=.56). When exploring associations with BPD criteria (IPDE), the BSL-23 mean significantly correlated with separation anxiety, identity and mood problems, chronic emptiness, suicidal ideation, and dissociation, while the BSL-S correlated with self-harming impulsive behaviour and anger outbursts.

CONCLUSIONS

Findings complement previous research, highlighting the role of childhood maltreatment and emotion regulation difficulties in BPD. While our findings need to be seen as preliminary and interpreted with caution, they suggest that the BSL may be used to differentiate between internalized symptoms and behavioural expressions of BPD in future research. Such a distinction might help to deepen the understanding of this complex heterogenous disorder.

The social domains organization of mentalizing processes in adolescents: a contribution to the conceptualization of personality function and dysfunction in young people

BACKGROUND

We propose and evaluate a contribution to the conceptualization and assessment of personality functioning based on social domains and mentalizing hypotheses. Social domains are distinct social contexts, such as with acquaintances and friends, with differentiated expectations regarding participants' behaviours and social attributions. The capacity to organize social participation according to these expectations requires the ability, we suggest, to modulate mentalizing processes domain by domain. Drawing on evidence that social domain organization is impaired in borderline personality disorder (BPD) and that hypermentalizing, a heightened interpretation of others' motives, thoughts or emotions, is elevated in adolescent BPD, we hypothesized that hypermentalizing levels in adolescents will vary by social domain and that elevated BPD features will be associated with impairment of this domain organization of hypermentalizing.

METHODS

Measures including the borderline personality features scale for children (BPFSC) and the movie for the assessment of social cognition (MASC) were administered to 171 adolescents aged 12-17 recruited from public schools and community organizations in a large metropolitan area in southwestern United States. Mean hypermentalizing scores were computed for adolescent interpretations of sequences in the MASC focusing on the social domains of acquaintance, friends and romantic interactions.

RESULTS

There was a progressive increase in hypermentalizing scores across the acquaintance, friends and romantic interactions (repeated measures ANOVA, p < .001, all pairwise comparisons, p ≤ .02), which was markedly reduced in the presence of elevated BPD features (interaction term, p = .007).

CONCLUSIONS

Hypermentalizing is organized according to social domain and this organization is impaired in the presence of elevated BPD features. The findings are consistent with the proposal that personality functioning entails a social domains organization of hypermentalizing, which is impaired in personality dysfunction. Identifying mentalizing processes domain by domain has the potential to create a personalized focus for the treatment of adolescents with personality difficulties.

Developmental trajectories of anger and sadness dysregulation in childhood differentially predict later borderline symptoms

Difficulties with emotion regulation are integral to borderline personality disorder (BPD) and its hypothesized developmental pathway. Here, we prospectively assess trajectories of emotion processing across childhood, how BPD symptoms impact these trajectories, and whether developmental changes are transdiagnostic or specific to BPD, as major depressive (MDD) and conduct disorders (CD) are also characterized by emotion regulation difficulties. This study included 187 children enriched for those with early symptoms of depression and disruptive behaviors from a longitudinal study. We created multilevel models of multiple components of emotional processing from mean ages 9.05 to 18.55 years, and assessed the effect of late adolescent BPD, MDD, and CD symptoms on these trajectories. Linear trajectories of coping with sadness and anger, and quadratic trajectories of dysregulated expressions of sadness and anger were transdiagnostic, but also exhibited independent relationships with BPD symptoms. Only inhibition of sadness was related to BPD symptoms. The quadratic trajectories of poor emotional awareness and emotional reluctance were also independently related to BPD. Findings support examining separable components of emotion processing across development as potential precursors to BPD, underscoring the importance of understanding these trajectories as not only a marker of potential risk but also potential targets for prevention and intervention.

Childhood Maltreatment and Mental Health Problems: A Systematic Review and Meta-Analysis of Quasi-Experimental Studies

OBJECTIVE

Childhood maltreatment is associated with mental health problems, but the extent to which this relationship is causal remains unclear. To strengthen causal inference, the authors conducted a systematic review and meta-analysis of quasi-experimental studies examining the relationship between childhood maltreatment and mental health problems.

METHODS

A search of PubMed, PsycINFO, and Embase was conducted for peer-reviewed, English-language articles from database inception until January 1, 2022. Studies were included if they examined the association between childhood maltreatment and mental health problems using a quasi-experimental method (e.g., twin/sibling differences design, children of twins design, adoption design, fixed-effects design, random-intercept cross-lagged panel model, natural experiment, propensity score matching, or inverse probability weighting).

RESULTS

Thirty-four quasi-experimental studies were identified, comprising 54,646 independent participants. Before quasi-experimental adjustment for confounding, childhood maltreatment was moderately associated with mental health problems (Cohen's d=0.56, 95% CI=0.41, 0.71). After quasi-experimental adjustment, a small association between childhood maltreatment and mental health problems remained (Cohen's d=0.31, 95% CI=0.24, 0.37). This adjusted association between childhood maltreatment and mental health was consistent across different quasi-experimental methods, and generalized across different psychiatric disorders.

CONCLUSIONS

These findings are consistent with a small, causal contribution of childhood maltreatment to mental health problems. Furthermore, the findings suggest that part of the overall risk of mental health problems in individuals exposed to maltreatment is due to wider genetic and environmental risk factors. Therefore, preventing childhood maltreatment and addressing wider psychiatric risk factors in individuals exposed to maltreatment could help to prevent psychopathology.

Examining the intergenerational transmission of parental invalidation: Extension of the biosocial model

This study examined the intergenerational transmission of parental invalidation and whether parental difficulties in emotion regulation mediated the association between past experiences of invalidation and current invalidating parenting practices. We also aimed to investigate whether gender might influence the transmission of parental invalidation. We recruited a community sample of 293 dual-parent families (adolescent and their parents) based in Singapore. Parents and adolescents each completed measures of childhood invalidation, whereas parents additionally reported on their difficulties in emotion regulation. Results based on path analyses demonstrated that past parental invalidation experienced by fathers positively predicted current perceived invalidation by their children. The association between mothers' childhood invalidation and current invalidating practices was fully mediated by mothers' difficulties with emotion regulation. Further analyses revealed that parents' current invalidating behaviors were not predicted by their past experiences of paternal or maternal invalidation. These findings point to the importance of considering the family invalidating environment as a whole when examining the influence of past experienced parental invalidation on emotion regulation and invalidating behaviors of second-generation parents. Our study provides empirical support for the intergenerational transmission of parental invalidation and highlights the need to address childhood experiences of parental invalidation in parenting programs.

A Systematic Review of the Association Between Early Childhood Trauma and Borderline Personality Disorder

Borderline personality disorder (BPD) is a debilitating clinical disorder associated with adverse impacts on multiple levels. While a high prevalence of childhood trauma has been noted, the ways such trauma impacts the development of BPD symptomatology remain unclear. In this systematic review, the authors examine the literature from 2000 to 2020, focusing on the association between trauma and BPD, and offer a comprehensive synthesis of possible etiological implications related to either one specific or multiple trauma types. In addition, results are analyzed based on commonly tested trauma parameters, including repeated exposure, polytrauma, onset, perpetrators, and gender. The authors also note some limitations in areas of sampling, measurement, causal inference methods, and data analyses. Results of this review point to several parameters of trauma that can be used to inform training for practitioners as well as enhance current interventions.

The Role of Cognitive Deficits in Borderline Personality Disorder with Early Traumas: A Mediation Analysis

(1) Background: although studies of cognitive functions are still limited in borderline personality disorder (BPD), the initial evidence suggested that BPD patients have deficits of executive functions and social cognition. In addition, patients who report physical and psychic traumatic experiences in childhood and adolescence show considerable neurocognitive impairment and severe BPD symptoms. The present study has a twofold aim: (1) to evaluate the differences in neurocognitive performances between BPD patients and healthy controls and (2) to verify in the BPD patients group whether neurocognitive deficits have the role of mediating the effect of early traumas on BPD psychopathology. (2) Methods: 69 subjects were enrolled: 38 outpatients with a diagnosis of BPD (DSM-5) and 31 healthy controls. BPD patients were tested with the Borderline Personality Disorder Severity Index (BPDSI), and the Childhood Trauma Questionnaire-Short Form (CTQ-SF). All subjects were evaluated with the Iowa Gambling task (IGT), the Berg card sorting test (BCST), the Tower of London task (ToL), and the Reading-the-mind-in-the-eyes-test (RMET). Statistical analysis was performed with the analysis of variance to compare the cognitive performances between BPD patients and controls. A mediation analysis was conducted with the Sobel Test in the BPD patients group. The significance level was p ≤ 0.05. (3) Results: significant differences between the two groups were found for several parameters of all the cognitive tests examined: BCST, IGT, ToL, and RMET. Mediation analysis with the Sobel test demonstrated that the percentage of correct answers in the BCST (BCSTc) and the RMET score significantly mediated the relation between the CTQ total score and BPDSI total score. (4) Conclusions: BPD patients showed an impairment of the following executive functions: set shifting, decision making, planning and problem solving, and social cognition abilities, in comparison with controls. Our results suggested that the effect of early trauma on BPD psychopathology was mediated by a deficit in two cognitive domains: cognitive flexibility and social cognition.

Exploring the association between lifetime traumatic experiences and positive psychotic symptoms in a group of long-stay patients with schizophrenia: the mediating effect of depression, anxiety, and distress

BACKGROUND

Positive psychotic symptoms of schizophrenia are generally characterized by hallucinations and delusions. We propose to assess the relationship between total composite trauma and positive psychotic symptoms, along with the mediation effect of cognition, fear of COVID-19, insomnia, anxiety, distress, and depression of Lebanese patients with schizophrenia.

METHODS

A cross-sectional study was carried out, between June and July 2021, by deriving data from 155 long-stay in-patients diagnosed with schizophrenia.

RESULTS

Depression, anxiety, and distress but not cognitive impairment, insomnia, and fear of COVID-19) mediated the association between lifetime traumatic experiences and positive psychotic symptoms. Higher traumatic experiences were associated with greater depression, anxiety, and distress, indicating a significant positive total effect on positive psychotic scores. Moreover, higher depression, anxiety, and distress were significantly associated with higher positive psychotic symptoms.

CONCLUSION

Our results contribute to the existing knowledge by suggesting other possible intervention paths through mediating factors. Interventions that improve anxiety, depression, and distress severity may be effective in reducing positive psychotic symptoms among patients with schizophrenia having experienced lifetime trauma.

Die Borderline-Persönlichkeitsstörung im Jugendalter

Zusammenfassung: Die Borderline-Persönlichkeitsstörung (BPS) ist eine schwere psychische Erkrankung, die durch hohe Morbidität und Mortalität gekennzeichnet ist sowie mit einem niedrigen psychosozialen Funktionsniveau einhergeht. Die BPS zeigt sich oft mit Beginn der frühen Adoleszenz (ab dem 12. Lebensjahr). Neben repetitiver Selbstverletzung und Suizidalität bestehen häufig sowohl Symptome internalisierender (Depression und Angst) als auch externalisierender Störungen (Hyperaktivität und Substanzkonsum). Daher kommt einer differentialdiagnostischen Abklärung und der Diagnosestellung mit dem Ziel der Frühintervention im klinischen Alltag eine besondere Rolle zu. Die Psychotherapie stellt bei der BPS eine äußerst wirksame Behandlungsmethode dar, Belege für die Wirksamkeit von pharmakologischen Intervention fehlen. Der Schlüssel zu einer Verbesserung der Versorgung für Jugendliche mit BPS liegt in einer Generierung von Wissen zu Vorläufersymptomen sowie einer evidenzbasierten, stadienspezifischen Behandlung (frühe Behandlung bereits subklinischer BPS mit Behandlungsintensität abgestuft nach dem Schweregrad). Dieser Übersichtsartikel beleuchtet den aktuellen Stand der Forschung und gibt Empfehlungen für die therapeutische Arbeit in der klinischen Praxis.

A Systematic Review of the Biological Correlates and Consequences of Childhood Maltreatment and Adverse Childhood Experiences

Childhood maltreatment (CM) and adverse childhood experiences (ACEs) are two primary forms of interpersonal victimization that have been associated with a host of deleterious health outcomes. Studies over the past decade have begun to use a range of biologically informed methods to better understand the role biology plays in the relationship between CM, ACEs, and later life outcomes. This line of research has shown that both forms of victimization occur at sensitive periods of development, which can increase the likelihood of "getting under the skin" and influence health and behavior across the life course. This review examines the current state of knowledge on this hypothesis. One hundred and ninety-nine studies are included in this systematic review based on criteria that they be written in English, use a biologically informed method, and be conducted on samples of humans. Results reveal that latent additive genetic influences, biological system functioning captured by biomarkers, polygenic risk scores, and neurobiological factors are commonly associated with exposure and response to CM and ACEs. The implication of these findings for the existing body of research on early life victimization and recommendations for future research and policy are discussed.

The McLean Screening Instrument for Borderline Personality Disorder: What, and why in a clinical cohort?

Borderline Personality Disorder is a severe psychiatric disorder with debilitating consequences. Screening for the disorder is problematic as symptoms overlap with other psychiatric disorders. The McLean Screening Instrument (MSI) assesses endorsement (yes/no) of 10 symptoms, with a cut-off of seven indicating potential caseness. Participants were (N = 68) from an established clinical cohort who completed a structured clinical interview, the MSI, the Childhood Trauma Questionnaire, and the Adolescent and Adult Time Attitudes Scale. A proportion (N = 20) also completed a follow-up interview examining their rationale for endorsing MSI items. Total number of MSI items endorsed was meaningfully related to scores on emotional neglect and negative time attitudes. There was substantive overlap between MSI threshold (≥7 items) and lifetime diagnosis of a mental disorder. The stated rationale for endorsing MSI items, was less indicative of personality trait, and was related more to particular developmental periods, one-off episodes, and life-contexts. Additionally, participants conflated constructs such as emptiness with loneliness, and moodiness with general emotionality. Those meeting MSI threshold recalled more childhood emotional neglect, and were more negative about all time periods. It is apparent that scoring of the MSI is driven by prevailing life circumstances as much as enduring personality traits.

How childhood maltreatment alters perception and cognition - the predictive processing account of borderline personality disorder

Borderline personality disorder (BPD) is a severe mental disorder, comprised of heterogeneous psychological and neurobiological pathologies. Here, we propose a predictive processing (PP) account of BPD to integrate these seemingly unrelated pathologies. In particular, we argue that the experience of childhood maltreatment, which is highly prevalent in BPD, leaves a developmental legacy with two facets: first, a coarse-grained, alexithymic model of self and others - leading to a rigidity and inflexibility concerning beliefs about self and others. Second, this developmental legacy leads to a loss of confidence or precision afforded beliefs about the consequences of social behavior. This results in an over reliance on sensory evidence and social feedback, with concomitant lability, impulsivity and hypersensitivity. In terms of PP, people with BPD show a distorted belief updating in response to new information with two opposing manifestations: rapid changes in beliefs and a lack of belief updating despite disconfirmatory evidence. This account of distorted information processing has the potential to explain both the instability (of affect, self-image, and interpersonal relationships) and the rigidity (of beliefs about self and others) which is typical of BPD. At the neurobiological level, we propose that enhanced levels of dopamine are associated with the increased integration of negative social feedback, and we also discuss the hypothesis of an impaired inhibitory control of the prefrontal cortex in the processing of negative social information. Our account may provide a new understanding not only of the clinical aspects of BPD, but also a unifying theory of the corresponding neurobiological pathologies. We conclude by outlining some directions for future research on the behavioral, neurobiological, and computational underpinnings of this model, and point to some clinical implications of it.

The role of sense of coherence and loneliness in borderline personality disorder traits: a longitudinal twin study

BACKGROUND

Borderline personality disorder (BPD) implies having problems with identity and relations with other people. However, not much is known about whether these indications of BPD are present in adolescence, i.e., before personality disorders usually are diagnosed. In this study, we examined the prediction of an aspect of identity (i.e., sense of coherence [SOC]) and social relations (i.e., perceived loneliness) throughout adolescence on BPD traits in young adulthood. In addition, we examined to what degree the predictive ability could be attributed to genetic and environmental factors. We also examined whether life events in adolescence were related to BPD traits.

METHODS

Three thousand three hundred ninety-one twins, consisting of seven national birth cohorts from Norway, participated in the study. SOC, loneliness and life events were measured three times throughout adolescence with self-report questionnaires, with 2 years in between measurements. BPD traits were measured at the end of adolescence around the age of 19 with a structured interview. Regression analyses were performed to examine the prediction of SOC, loneliness and life events on BPD traits. Cholesky decomposition models were then used to determine to what degree the associations were due to genetic and environmental influences.

RESULTS

The prediction of SOC and loneliness on BPD traits increased from R = .25 (when measured 6 years prior to the assessment of BPD traits) to R = .45 (when measured shortly before the assessment of BPD traits). In addition, negative life events considered dependent on a person's behavior were related to BPD traits. Negative independent and positive dependent life events did not contribute to the prediction of BPD traits. Cholesky decomposition models showed that SOC and loneliness were associated with BPD traits mainly due to shared genetic influences (i.e., the proportion due to genetic influences ranged from 71 to 86%). Adding negative dependent life events to the prediction of BPD traits did not change these percentages.

CONCLUSIONS

These findings indicate that the weaker SOC, the stronger feelings of loneliness, and the negative life events associated with BPD traits are mainly consequences of the genetic aspects of BPD traits, rather than having direct effects on levels of BPD symptoms.

Adverse Childhood Experiences and Neurocognition in Borderline Personality Disorder: A Call-to-Action Perspective Review

Adverse childhood experiences (ACEs) contribute to the development of personality traits leading to adult borderline personality disorder (BPD). Neurocognitive changes could partly mediate the association between ACEs and BPD. We discuss how exposure to ACEs could induce alterations in neurocognition, which, in turn, would contribute to the development of BPD. We conducted a review of MEDLINE articles through 2021, documenting a link between ACEs, neurocognitive impairments, and BPD, and also focusing on the pairwise associations. ACEs appear to have a strong impact on neurocognition and are a predictive factor for BPD. Maltreated, abused, and emotionally invalidated children are more likely to present BPD traits. Neurocognitive impairments in adults exposed to ACEs and in patients with BPD arise from similar brain alterations in the amygdala, hippocampus, and prefrontal cortex. These impairments seem to be linked with clinical dimensions of BPD: increased impulsivity to altered inhibitory control; dissociative experiences to nonspecific autobiographical memory; and emotionally biased facial recognition to unstable interpersonal relationships. This perspective review highlights the contributory role of neurocognition in the association between ACEs and BPD. Additional research is needed, however, on the interconnections among ACEs, neurocognition, and BPD. Future studies could also focus on developing tools to assess early adversity in BPD specifically and on psychotherapeutic approaches to promptly remedy neurocognitive impairments.

Executive functioning in adults with borderline personality disorder and first-degree biological relatives

OBJECTIVES

Behavioural dysregulation is a heritable core symptom domain in borderline personality disorder (BPD) that is likely influenced by the integrity of executive functions (EFs). However, the extent to which familial risk for BPD confers decrement to EFs has yet to be comprehensively studied.

METHODS

In this family study, probands with BPD (n = 73), first-degree biological relatives (n = 65), and healthy controls without psychiatric diagnoses (n = 77) were assessed in abstraction, attentional vigilance, working memory, cognitive flexibility, interference resolution, planning, problem solving, and response inhibition.

RESULTS

In univariate analyses, probands demonstrated lower response inhibition than relatives. Comparatively, discriminant function analyses revealed that lower interference resolution and response inhibition jointly discriminated probands from relatives and controls, whereas a combination of less efficient problem solving and difficulty manipulating mental information discriminated probands and relatives from controls. Moreover, the subset of psychiatrically non-affected relatives demonstrated a pattern of resilience to psychiatric morbidity substantiated by stronger response inhibition and abstraction abilities despite less efficient problem solving.

CONCLUSIONS

Familial risk for BPD is represented predominantly by a pattern of problem-solving and working memory deficits. Resilience to a psychiatric disorder in non-affected relatives reflects both EF weaknesses and strengths, highlighting potential protective factors that should be considered in future neurocognitive research on BPD families.

Childhood maltreatment and disordered gambling in adulthood: disentangling causal and familial influences

BACKGROUND

Despite abundant research on the potential causal influence of childhood maltreatment (CM) on psychological maladaptation in adulthood, almost none has implemented the discordant twin design as a means of examining the role of such experiences in later disordered gambling (DG) while accounting for genetic and family environmental confounds. The present study implemented such an approach to disentangle the potential causal and familial factors that may account for the association between CM and DG.

METHODS

Participants were 3750 twins from the Australian Twin Registry [Mage = 37.60 (s.d. = 2.31); 58% female]. CM and DG were assessed separately via two semi-structured telephone interviews. Random-intercept generalized linear mixed models were fit to the data; zygosity, sex, educational attainment, childhood psychiatric disorder, adult antisocial behavior, and alcohol use disorder (AUD) were included as covariates.

RESULTS

Neither quasi-causal nor familial effects of CM predicted DG after adjusting for covariates. Educational attainment appeared to reduce the risk of DG while AUD appeared to increase risk; evidence also emerged for familial effects of antisocial behavior on DG. Post-hoc analyses revealed a familial effect of CM on antisocial behavior, indicating that the association between CM and DG identified in unadjusted models and in prior studies may be accounted for by genetic and shared family environmental effects of antisociality.

CONCLUSIONS

These findings add to the meager literature showing that CM does not exert a causal effect on DG, and present novel evidence that familial effects of antisocial behavior may account for the association between CM and DG identified in extant non-twin research.

Borderline Personality Disorder: Risk Factors and Early Detection

Personality disorders (PDs) exert a great toll on health resources, and this is especially true for borderline personality disorder (BPD). As all PDs, BPD arises during adolescence or young adulthood. It is therefore important to detect the presence of this PD in its earlier stages in order to initiate appropriate treatment, thus ameliorating the prognosis of this condition. This review aims to highlight the issues associated with BPD diagnosis in order to promote its early detection and treatment. To do so, we conducted a search on PubMed database of current evidence regarding BPD early diagnosis, focusing on risk factors, which represent important conditions to assess during young patient evaluation, and on diagnostic tools that can help the clinician in the assessment process. Our findings show how several risk factors, both environmental and genetic/neurobiological, can contribute to the onset of BPD and help identify at-risk patients who need careful monitoring. They also highlight the importance of a careful clinical evaluation aided by psychometric tests. Overall, the evidence gathered confirms the complexity of BDP early detection and its crucial importance for the outcome of this condition.

Frequent follow-up of suicidal youth assessed in the emergency room: Long-term trajectory and predictors of suicidality

Suicide was the second‑leading cause of US deaths in 2018 among 15-24-year-olds. Suicide attempts, a risk factor for completions, and suicide ideation have doubled among pediatric emergency room (ER) patients during the past decade. Borderline Personality Disorder (BPD), a comorbid condition, has a 10% suicide rate. We examined the 4-year outcome of a cohort of suicidal adolescents, many also suffering from BPD and having undergone some form of treatment, to identify baseline factors which could inform intervention that would minimize suicidality 4 years post-discharge.

METHODS

We conducted a prospective longitudinal study of suicidality at twelve points (four assessment occasions) for 286 suicidal youth presenting to a pediatric ER, most suffering from BPD, with 36 suicide ratings from baseline to 2-, 6- and 48-month follow-up evaluations. We examined the trajectory and predictors of persisting suicidality.

RESULTS

Suicidality rapidly decreased within 2 months post-ER-discharge, subsequently remaining low throughout 48 months. Baseline functioning, female sex, stressful life events and BPD impulsiveness were most predictive of persisting suicidality at 48-month follow-up.

CONCLUSION

Most suicidal youth, many meeting BPD criteria, no longer feel suicidal 2 months after ER discharge. Management of participants' baseline poor functioning stressful life events and the impulsiveness component of BPD specifically in females could impact suicidality 4 years later, and guide treatment options. The absence of the BPD cognitive and affective subscales as predictors of suicidality at 4-year follow-up may reflect treatment received. Further investigation of treatment effects is warranted and under way.

Childhood Traumatic Experiences and Dimensional Models of Personality Disorder in DSM-5 and ICD-11: Opportunities and Challenges

PURPOSE OF REVIEW

Childhood trauma is an important risk factor for the development of personality disorders (PDs), yet most research has been devoted to categorical models of personality pathology. Considering the introduction of a dimensional PD model with ICD-11, we review current findings related to various forms of childhood trauma, and PDs, operationalized in the form of personality functioning and maladaptive traits. We focus on the magnitude of associations and examine specific relationships between emotional and physical trauma with areas of personality functioning and single traits.

RECENT FINDINGS

Two studies showed a strong association between childhood trauma and personality dysfunction. Seven studies, including clinical and forensic samples, demonstrated heterogeneous associations between various forms of childhood trauma and maladaptive traits. Overall, four studies indicated a slightly stronger association between personality dysfunction, maladaptive trait expression, and higher levels of emotional trauma than for physical or sexual trauma. Regarding specific trait domains and childhood trauma, most studies yielded the strongest associations for either psychoticism or detachment. Research on childhood trauma and dimensional PD models (i.e., personality functioning and traits) has the potential to contribute to a better understanding of their complex relationship. However, high intercorrelations among different types of childhood trauma, areas of personality functioning, and trait domains increase the difficulty of disentangling single effects. More research is needed including clinical and non-Western samples, especially considering the upcoming ICD-11 classification.

Polygenic risk for autism, attention-deficit hyperactivity disorder, schizophrenia, major depressive disorder, and neuroticism is associated with the experience of childhood abuse

People who experience childhood abuse are at increased risk of mental illness. Twin studies suggest that inherited genetic risk for mental illness may account for some of these associations. Yet, the hypothesis that individuals who have experienced childhood abuse may carry genetic loading for mental illness has never been tested with genetic data. Using polygenic risk scores for six psychiatric disorders-attention-deficit hyperactivity disorder (ADHD), autism spectrum disorder (ASD), bipolar disorder (BPD), major depressive disorder (MDD), neuroticism, and schizophrenia-we tested whether genetic risk for mental illness was associated with increased risk of experiencing three types of childhood abuse: physical/emotional abuse, physical assault, and sexual abuse, in a cohort of white non-Hispanic women (n = 11,315). ADHD and MDD genetic risk scores were associated with a higher risk of experiencing each type of childhood abuse, while neuroticism, schizophrenia, BPD, and ASD genetic scores were associated with a higher risk of experiencing physical/emotional abuse and physical assault, but not sexual abuse. Sensitivity analyses examining potential bias from the differential recall of childhood trauma, parental socioeconomic status, and population stratification were consistent with the main findings. A one-standard-deviation increase in genetic risk for mental illness was associated with a modestly elevated risk of experiencing childhood abuse (OR range: 1.05-1.19). Therefore, inherited genetic risk may partly account for the association of childhood abuse with mental illness. In addition, future treatments for mental illness will benefit from taking into consideration the co-occurrence of childhood trauma and genetic loading.

Nature and nurture? A review of the literature on childhood maltreatment and genetic factors in the pathogenesis of borderline personality disorder

BACKGROUND

Borderline Personality Disorder (BPD) is a psychiatric disorder associated with significant morbidity and mortality. However, the neurobiological alterations underlying the condition remain poorly understood. As a result, existing treatments remain inadequate. One of the main risk factors for the development of BPD is a history of childhood maltreatment. However, it is considered neither causative nor specific to the condition. Current theory is therefore increasingly moving toward a 'Gene x Environment' (GxE) model of the condition. The purpose of the current work was to conduct a systematic literature review, which comprehensively identifies all published molecular level GxE studies that have explored the role of specific genetic loci, in influencing the risk of BPD following exposure to childhood abuse or neglect.

METHODS

Four electronic databases were used to systematically search for molecular level GxE studies of any design, which focused on the development of BPD following exposure to childhood abuse or neglect, without language or date restrictions. Articles were screened independently by two reviewers and results were synthesized narratively.

RESULTS

A total of 473 articles were screened of which sixteen were selected for inclusion in our review. Implicated genes were categorised according to their influence on; Neurotransmitter Systems, Neurodevelopment and Neuroendocrine Systems.

CONCLUSIONS

The identified studies have produced several relevant and statistically significant results. Of particular note, is the repeated finding that genes involved in HPA axis regulation, may be altered by exposure to childhood maltreatment, influencing subsequent susceptibility to BPD. This is both biologically plausible and of potential clinical significance.

Patient crying during psychotherapy intake sessions: Relationship to patient characteristics and early treatment process

The aim of the present study is to further the understanding of who cries at the beginning of psychotherapy and patients' experience of crying in that process. Intake sessions for 53 patients beginning psychotherapy at a university-based clinic were coded for discrete crying segments. Data about patient characteristics were also collected at intake. Results indicate that crying during intake sessions was related to lower global functioning and higher severity of childhood sexual abuse. Furthermore, patients who cried at intake were over four times more likely to also cry at feedback, and those who cried at feedback were almost 12 times more likely to have cried at intake. Finally, crying in the intake session did not appear to be related to patient- or therapist-rated working alliance. Overall, the present study provides valuable information about characteristics of patients who cry at the outset of the therapy process and patients' experience of crying over time in therapy. Findings suggest the need for further research on patient characteristics and aspects of the therapy process that may predict patient crying over the course of treatment, as well as how these early crying experiences may be related to eventual patient outcomes.

The mediating effect of difficulties in emotion regulation on the association between childhood maltreatment and borderline personality disorder

BACKGROUND

Childhood maltreatment and difficulties in emotion regulation are common in patients with Borderline Personality Disorder (BPD) and Depressive Disorders (DD).

OBJECTIVE

This study examines differences between patients with BPD and patients with DD, regarding childhood maltreatment and difficulties in emotion regulation as well as the mediating effect of different aspects of emotion regulation deficits on the association between childhood maltreatment and BPD-symptoms.

METHOD

A total of 305 participants, 177 with BPD and 128 with DD completed an assessment including the Childhood Trauma Questionnaire (CTQ), the Emotion Regulation Scale (DERS), the Brief Symptom Inventory (BSI), and the Structured Clinical Interview for DSM-IV (SCID). Data was analyzed using multiple analyses of variances and mediation analyses.

RESULTS

Patients with BPD reported more childhood maltreatment and more difficulties in emotion regulation than patients with DD. When general symptom severity, age, and gender were included in the analysis as covariates only group differences regarding 'impulse control difficulties' (F(1,299) = 38.97, p < .001, η_p² = .115), 'limited access to emotion regulation strategies' (F(1,299) = 4.66, p = .032, η_p² = .015), and 'lack of emotional clarity' (F(1,299) = 9.38, p = .002, η_p² = .030) remained statistically significant. A mediation analysis, including above-mentioned covariates, indicated an association between emotional abuse and BPD-symptoms, which was mediated by difficulties in emotion regulation (indirect effect B = .012, 95% CI [.001; .031], R² = .429). Subscale analyses revealed 'impulse control difficulties' as the aspect of difficulties in emotion regulation that has the greatest impact on this association (B = .021, 95% CI [.003; .045]).

CONCLUSIONS

Patients with BPD display more childhood maltreatment and difficulties in emotion regulation than patients with DD. Difficulties in emotion regulation, especially difficulties in impulse control, seem to play an important role in the association between childhood emotional abuse and BPD-symptoms.

Trauma and psychopathology associated with early onset BPD: an empirical contribution

Prodromal symptoms of borderline personality disorder (BPD) often arise in young age, especially in early adolescence. Several factors for early BPD onset have been identified to consent a precocious detection of high-risk population. The present study is aimed: (1) to identify what psychopathological, traumatic, and functional factors are significantly associated to early onset in a sample of BPD patients and (2) to evaluate what factors are associated to the time interval between symptoms onset and first psychiatric visit (Δ age). Participants were enrolled from BPD outpatients attending the Center for Personality Disorder of the University of Turin, Italy. Patients were tested with assessment instruments for specific BPD symptoms, exposure to traumatic experiences, global functioning, and perception of quality of life. All variables that were found significant at a bivariate analysis were included in two multiple regressions (stepwise backward), with the age of onset and the Δ age as dependent variables. Significance level was P ≤ 0.05. Seventy patients were included in the study (68 completers). Factors that were found related to age of onset were: CTQ-SF emotional abuse (P = 0.001); ACE-IQ bully victimization (P = 0.005), alcohol/drug abuser in the household (P = 0.001), and physical neglect (P = 0.006); BIS non-planning impulsivity (P = 0.005); and SOFAS score (P = 0.033). Factors that were found related to Δ age were: ACE-IQ total score (P = 0.001) and BIS total score (P = 0.001). Earlier onset of BPD is mainly associated to traumatic events, including abuse, neglect, dysfunction in household environment, and bullying. Earlier onset is also related to a worse social functioning. Among BPD symptoms only non-planning impulsivity was found associated to early onset. A higher number of traumatic events and worse impulsive dyscontrol induce a significant reduction of the time interval between onset and first psychiatric observation.

Mediating role of borderline personality disorder traits in the effects of childhood maltreatment on suicidal behaviour among mood disorder patients

Background:

Substantial evidence supports an association between childhood maltreatment and suicidal behaviour. However, few studies have examined factors mediating this relationship among patients with unipolar or bipolar mood disorders.

Methods:

Depressive disorder and bipolar disorder (ICD-10-DCR) patients (n = 287) from the Helsinki University Psychiatric Consortium (HUPC) Study were surveyed on self-reported childhood experiences, current depressive symptoms, borderline personality disorder traits, and lifetime suicidal behaviour. Psychiatric records served to complement the information on suicide attempts. We examined by formal mediation analyses whether (1) the effect of childhood maltreatment on suicidal behaviour is mediated through borderline personality disorder traits and (2) the mediation effect differs between lifetime suicidal ideation and lifetime suicide attempts.

Results:

The impact of childhood maltreatment in multivariate models on either lifetime suicidal ideation or lifetime suicide attempts showed comparable total effects. In formal mediation analyses, borderline personality disorder traits mediated all of the total effect of childhood maltreatment on lifetime suicide attempts, but only one fifth of the total effect on lifetime suicidal ideation. The mediation effect was stronger for lifetime suicide attempts than for lifetime suicidal ideation (P = 0.002) and independent of current depressive symptoms.

Conclusions:

The mechanisms of the effect of childhood maltreatment on suicidal ideation versus suicide attempts may diverge among psychiatric patients with mood disorders. Borderline personality disorder traits may contribute to these mechanisms, although the influence appears considerably stronger for suicide attempts than for suicidal ideation.

Romantic functioning mediates prospective associations between childhood abuse and neglect and parenting outcomes in adulthood

Research suggests intergenerational links between childhood abuse and neglect and subsequent parenting quality, but little is known about the potential mechanisms underlying intergenerational continuities in parenting. Adult romantic functioning may be one plausible mechanism, given its documented associations with both adverse caregiving in childhood and parenting quality in adulthood. The present study used data from the Minnesota Longitudinal Study of Risk and Adaptation to (a) investigate prospective associations between childhood experiences of abuse and neglect and multiple parenting outcomes in adulthood, and (b) evaluate the degree to which adult romantic functioning mediates those associations. Information regarding childhood abuse and neglect was gathered prospectively from birth through age 17.5 years. Multimethod assessments of romantic functioning were collected repeatedly through early adulthood (ages 20 to 32 years), and parenting quality was assessed as participants assumed a parenting role (ages 21 to 38 years). As expected, childhood abuse and neglect experiences predicted less supportive parenting (observed and interview rated) and higher likelihood of self-reported Child Protective Services involvement. The association with interview-rated supportive parenting was partially mediated by lower romantic competence, whereas the association with Child Protective Services involvement was partially mediated by more relational violence in adult romantic relationships. Implications of these novel prospective findings for research and clinical intervention are discussed.

Associations between Child Maltreatment, Harsh Parenting, and Sleep with Adolescent Mental Health

Youth who suffer from psychiatric disorders are at high risk for negative outcomes, including aggression and substance abuse. Although many youth with psychiatric disorders have endured harsh parenting and/or child maltreatment (CM), differential associations between these experiential factors have yet to be fully explored. Sleep problems have also been implicated in psychiatric disorders and are consistently associated with CM. The overlap and unique contributions of CM and sleep problems to the mental health of youth remains unclear; longitudinal studies from late childhood into adolescence, when psychiatric illnesses frequently onset, are rare. The current longitudinal study examined associations of CM, harsh parenting, and sleep problems with symptoms of four psychiatric disorders: Conduct Disorder, Attention Deficit Hyperactivity Disorder, Anxiety, and Depression. Early adolescent youth with no history of substance use (N = 529) were sampled from a working class, medium-sized city in northern Kentucky, and an extensive battery of tests were administered to youth and a parent. CM was more strongly and consistently related to psychiatric disorder symptoms at baseline than was harsh parenting. Reports of harsh parenting were more strongly associated with externalizing symptoms than internalizing symptoms. Sleep problems were also positively associated with psychiatric disorder symptoms at baseline, but did not exacerbate the effects of CM or harsh parenting on symptom counts. Longitudinally, harsh parenting was more predictive of change in psychiatric symptoms two to three years later than was CM. The potential significance of childhood adversity and sleep problems for prevention of later mental health problems are discussed.

Early Detection and Outcome in Borderline Personality Disorder

Borderline personality disorder (BPD) is a severe and heterogeneous mental disorder that is known to have the onset in young age, often in adolescence. For this reason, it is of fundamental importance to identify clinical conditions of childhood and adolescence that present a high risk to evolve in BPD. Investigations indicate that early borderline pathology (before 19 years) predict long-term deficits in functioning, and a higher percentage of these patients continue to present some BPD symptoms up to 20 years. There is a general accordance among investigators that good competence in both childhood and early adulthood is the main predictive factor of excellent recovery in BPD patients. Some authors suggest that specific childhood personality traits can to be considered precursors of adult BPD, as well as some clinical conditions: disruptive behaviours, disturbance in attention and emotional regulation, conduct disorders, substance use disorders, and attention-deficit-hyperactivity disorder. Unfortunately, diagnosis and treatment of BPD is usually delayed, also because some clinicians are reluctant to diagnose BPD in younger individuals. Instead, the early identification of BPD symptoms have important clinical implications in terms of precocious intervention programs, and guarantees that young people with personality disorders obtain appropriate treatments. This review is aimed to collect the current evidences on early risk and protective factors in young people that may predict BPD onset, course, and outcome.

Genetically Informative Mediation Modeling Applied to Stressors and Personality-Disorder Traits in Etiology of Alcohol Use Disorder

A statistical mediation model was developed within a twin design to investigate the etiology of alcohol use disorder (AUD). Unlike conventional statistical mediation models, this biometric mediation model can detect unobserved confounding. Using a sample of 1410 pairs of Norwegian twins, we investigated specific hypotheses that DSM-IV personality-disorder (PD) traits mediate effects of childhood stressful life events (SLEs) on AUD, and that adulthood SLEs mediate effects of PDs on AUD. Models including borderline PD traits indicated unobserved confounding in phenotypic path coefficients, whereas models including antisocial and impulsive traits did not. More than half of the observed effects of childhood SLEs on adulthood AUD were mediated by adulthood antisocial and impulsive traits. Effects of PD traits on AUD 5‒10 years later were direct rather than mediated by adulthood SLEs. The results and the general approach contribute to triangulation of developmental origins for complex behavioral disorders.

A Neuroscience-Oriented Research Approach to Borderline Personality Disorder

Traditionally, the study of personality disorders had been based on psychoanalytic or behavioral models. Over the past two decades, there has been an emerging neuroscience model of borderline personality disorder (BPD) grounded in the concept of BPD as a condition in which dysfunctional neural circuits underlie its pathological dimensions, some of which include emotion dysregulation (broadly encompassing affective instability, negative affectivity, and hyperarousal), abnormal interpersonal functioning, and impulsive aggression. This article, initiated at a joint Columbia University- Cornell University Think Tank on BPD with representation from the Icahn School of Medicine at Mount Sinai, suggests how to advance research in BPD by studying the dimensions that underlie BPD in addition to studying the disorder as a unitary diagnostic entity. We suggest that linking the underlying neurobiological abnormalities to behavioral symptoms of the disorder can inform a research agenda to better understand BPD with its multiple presentations.

Corticolimbic Connectivity Mediates the Relationship between Adverse Childhood Experiences and Symptom Severity in Borderline Personality Disorder

The interaction between biological and environmental factors (especially adverse childhood experiences, ACEs) plays a crucial role in the development and maintenance of borderline personality disorder (BPD). These factors act influencing BPD core features such as pervasive instability in affect regulation, impulse control, social cognition, and interpersonal relationships. In line with this perspective, abnormalities in social cognition and related neurobiological underpinnings could mediate the relationship between ACEs and psychopathological manifestations in adulthood. In a sample of 14 females, functional connectivity (FC) analyses were performed modeling the interaction between ACEs and corticolimbic dysregulation during emotional processing and its relationship with BPD symptom severity. ACEs were associated with a dampening of the negative FC between (1) the right amygdala (Amy) and right dorsolateral prefrontal cortex (DLPFC) and between (2) the left Amy and bilateral DLPFC, right precuneus, left cerebellum and left dorsomedial prefrontal cortex during emotional processing. The connectivity between right Amy and DLPFC mediates the relationship between childhood adversities and BPD symptomatology. Furthermore, the negative FC between Amy and DLPFC, postcentral gyrus, the vermis of cerebellum and precuneus was also associated with BPD symptom severity, with a weaker negative coupling between Amy and these regions being related to a worse BPD psychopathology. Our results confirm the role of ACEs in contributing to social cognition impairments in BPD and related symptomatology from a neurobiological perspective.

Treatment Effects following Residential Dialectical Behavior Therapy for Adolescents with Borderline Personality Disorder

Dialectical behavior therapy (DBT) is an empirically supported treatment for borderline personality disorder (BPD) in adults, however fewer studies have examined outcomes in adolescents. This study tested the effectiveness of an intensive 1-month, residential DBT treatment for adolescent girls meeting criteria for BPD. Additionally, given well-established associations between BPD symptoms and childhood abuse, the impact of abuse on treatment outcomes was assessed. Participants were female youth (n = 53) aged 13-20 years (M = 17.00, SD = 1.89) completing a 1-month residential DBT program. At pre-treatment, participants were administered a diagnostic interview and self-report measures assessing BPD, depression, and anxiety symptom severity. Following one month of treatment, participants were re-administered the self-report instruments. Results showed significant pre- to post-treatment reductions in both BPD and depression symptom severity with large effects. However, there was no significant change in general anxious distress or anxious arousal over time. The experience of childhood abuse (sexual, physical, or both) was tested as moderator of treatment effectiveness. Although experiencing multiple types of abuse was related to symptom severity, abuse did not moderate the effects of treatment. Collectively, results indicate that a 1-month residential DBT treatment with adolescents may result in reductions in BPD and depression severity but is less effective for anxiety. Moreover, while youth reporting abuse benefitted from treatment, they were less likely to achieve a clinically significant reduction in symptoms.

Borderline personality disorder and sexual abuse: A systematic review

Although sexual abuse (SA) is known to be frequent among borderline personality disorder (BPD) patients, few reviews evaluating that relationship have been published. This systematic review aimed to investigate SA (including adulthood) as a predictor of BPD diagnosis, clinical presentation and prognosis. Studies written in English or Portuguese from January 1997 until January 2017 were identified by searching the following keywords in three international databases: "borderline personality disorder" OR "borderline disorder" AND "sexual abuse" OR "sexual violence" OR "sexual victimization" OR "sexual assault" OR "rape". Forty articles met the eligibility criteria. Overall, SA was found to play a major role in BPD, particularly in women. Childhood sexual abuse (CSA) is an important risk factor for BPD. Adult sexual abuse (ASA) rates are significantly higher in BPD patients compared with other personality disorders (PDs). SA history predicts more severe clinical presentation and poorer prognosis. Suicidality has the strongest evidence, followed by self-mutilation, post-traumatic stress disorder (PTSD), dissociation and chronicity of BPD. Future research should study more ASA and include more males, milder BPD patients and documented or corroborated SA cases. The impact of other traumatic experiences (e.g., emotional abuse) on BPD must also be systematically reviewed.

Adolescent Victimization and Early-Adult Psychopathology: Approaching Causal Inference Using a Longitudinal Twin Study to Rule Out Noncausal Explanations

Adolescence is the peak age for both victimization and mental disorder onset. Previous research has reported associations between victimization exposure and many psychiatric conditions. However, causality remains controversial. Within the Environmental Risk Longitudinal Twin Study, we tested whether seven types of adolescent victimization increased risk of multiple psychiatric conditions and approached causal inference by systematically ruling out noncausal explanations. Longitudinal within-individual analyses showed that victimization was followed by increased mental health problems over a childhood baseline of emotional/behavioral problems. Discordant-twin analyses showed that victimization increased risk of mental health problems independent of family background and genetic risk. Both childhood and adolescent victimization made unique contributions to risk. Victimization predicted heightened generalized liability (the “p factor”) to multiple psychiatric spectra, including internalizing, externalizing, and thought disorders. Results recommend violence reduction and identification and treatment of adolescent victims to reduce psychiatric burden.

How Do Stress Exposure and Stress Regulation Relate to Borderline Personality Disorder?

Borderline personality disorder (BPD) is a severe and frequent disorder characterized by a pervasive pattern of instability affecting impulse control, emotional regulation, cognitive processing, self-image and interpersonal relationships. Patients’ personal histories are often marked by stressful or traumatic experiences, either unique or repeated. Moreover, while clinical signs of the disorder include both chronic and acute features, acute features are mostly triggered by acute stressful situations. Such features include transient cognitive distortion, intense anger, uncontrollable impulsivity, and self-harm behavior – including suicide – and contribute to the burden of the disease. In this paper, we review the various aspects (epidemiological, clinical, and physiological) contributing to the relationship between BDP and stress. In particular, we explore the statistical association between stress exposure and the emergence of BPD while taking into account other psychopathologies, such as post-traumatic stress disorder. Then, the different aspects of stress responses (namely, the phenomenological, behavioral, hormonal, neuro-vegetative and neural responses) are reviewed in BPD patients. Pathophysiological hypotheses are formulated to explain the differences in responses between BPD patients and healthy subjects and their relation to BPD symptoms. Although the pathogenesis remains uncertain, our conclusions seem to reflect a specific biological and neural pattern of altered stress perception and regulation in BPD.

The aetiology of borderline personality disorder (BPD): contemporary theories and putative mechanisms

This article presents an overview of current knowledge regarding the aetiology of Borderline Personality Disorder (BPD). It begins with a brief synopsis of early research and theory, and discusses how changing conceptualisations of BPD have impacted on our aetiological knowledge. Contemporary theories are described and presented within a developmental psychopathology framework. Deficient co-regulation and social communication in infancy are purported to underpin emotional dysregulation and social cognition deficits across development. These mechanisms are further potentiated by maladaptive social experiences in a series of positive feedback loops. Prospective research provides preliminary evidence for the reciprocal (or mediating) effects of maladaptive experiences and childhood dysregulation. Moving forward, cohort studies may incorporate neurobiological assessments to examine the biological systems underpinning phenotypic (e.g., impulsivity, disturbed relatedness) covariation.

The role of DSM-5 borderline personality symptomatology and traits in the link between childhood trauma and suicidal risk in psychiatric patients

BACKGROUND

Childhood traumas appear to be linked to suicidal behavior. However, the factors that mediate between these two phenomena are not sufficiently understood. Recent findings suggest that borderline personality disorder (BPD) may explain some of the association.

METHOD

The present study investigated the potential mediating role of BPD symptomatology and traits between reported childhood trauma and suicidal risk in adult psychiatric outpatients (N = 124). BPD symptomatology was measured with DSM-5 Section II criterion-counts (SCID-II; Structured Clinical Interview for DSM-IV Axis II), whereas BPD traits were measured with specified DSM-5 Section III traits (PID-5; Personality Inventory for DSM-5). Childhood traumas were self-reported (CTQ; Childhood Trauma Questionnaire), whereas level of suicidal risk was measured with a structured interview (MINI Suicidality Module; Mini International Neuropsychiatric Interview). Mediation effects were tested by bias-corrected (10.000 boot-strapped samples) confidence intervals.

RESULTS

BPD features account for a considerable part of the cross-sectional association between childhood trauma and level of suicidal risk, even when controlling for the influence of gender, age, and educational level. This finding remained stable when testing the model without the suicidality-related BPD criterion and PID-5 items. DSM-5 Section II BPD criterion-counts explained 67% of the total effect, whereas DSM-5 Section III BPD traits accounted for 82% of the total effect. The specific DSM-5 Section III trait facets of "Depressivity" (52%) and "Perceptual Dysregulation" (37%) accounted for most of this effect.

CONCLUSIONS

The findings provide preliminary support for the proposed mediation model indicating that BPD features may help explain relations between childhood trauma and elevated suicidal risk in adult life, in particular for DSM-5 Section III personality traits of depressivity (e.g., pessimism, guilt, and shame) and perceptual dysregulation (e.g., dissociation). To reduce the suicidal risk among those with a history of childhood trauma, BPD features (including "Depressivity" and "Perceptual Dysregulation") might be an important target of assessment, risk management, and treatment. However, other factors are likely to be involved, and a longitudinal and more large-scale design is warranted for a conclusive test of mediation.

Genetic and environmental sources of covariation between early drinking and adult functioning

The vast majority of individuals initiate alcohol consumption for the first time in adolescence. Given the widespread nature of its use and evidence that adolescents may be especially vulnerable to its effects, there is concern about the long-term detrimental impact of adolescent drinking on adult functioning. While some researchers have suggested that genetic processes may confound the relationship, the mechanisms linking drinking and later adjustment remain unclear. The current study utilized a genetically informed sample and biometric modeling to examine the nature of the familial influences on this association and identify the potential for genetic confounding. The sample was drawn from the Minnesota Twin Family Study (MTFS), a longitudinal study consisting of 2,764 twins assessed in 2 cohorts at regular follow-ups from age 17 to age 29 (older cohort) or age 11 to age 29 (younger cohort). A broad range of adult measures was included assessing substance use, antisocial behavior, personality, socioeconomic status, and social functioning. A bivariate Cholesky decomposition was used to examine the common genetic and environmental influences on adolescent drinking and each of the measures of adult adjustment. The results revealed that genetic factors and nonshared environmental influences were generally most important in explaining the relationship between adolescent drinking and later functioning. While the presence of nonshared environmental influences on the association are not inconsistent with a causal impact of adolescent drinking, the findings suggest that many of the adjustment issues associated with adolescent alcohol consumption are best understood as genetically influenced vulnerabilities. (PsycINFO Database Record

Relation between psychotic symptoms, parental care and childhood trauma in severe mental disorders

A relation between different types of parental care, trauma in childhood and psychotic symptoms in adulthood has been proposed. The nature of this association is not clear and if it is more related to psychotic disorders per se or to a cluster of symptoms such as positive psychotic symptoms remains undefined. We have analysed the presence of childhood trauma using the CTQ scale and types of parental care using the PBI scale in three groups of subjects: borderline personality disorder patients (n=36), first psychotic episode patients (n=61) and healthy controls (n=173). Positive psychotic symptomatology was assessed with the CAPE scale. General linear models were used to study the relation between positive psychotic symptomatology and variables of interest. BPD patients had the highest rate of any kind of trauma, followed by FEP patients. We found a positive relationship between psychotic symptomatology and the existence of trauma in childhood in all groups. Moreover, an affectionless control rearing style was directly associated with the existence of trauma. Furthermore, subjects with trauma presented less probability of having an optimal parenting style in childhood. The relation between psychotic symptoms and trauma remained statistically significant after adjusting for other variables including parental rearing style. There seems to be a link between trauma in childhood and psychotic symptomatology across different populations independently of psychiatric diagnosis. Taking into account that there is an association between trauma and psychosis and that trauma is a modifiable factor, clinicians should pay special attention to these facts.

Genetic and environmental influences on the codevelopment among borderline personality disorder traits, major depression symptoms, and substance use disorder symptoms from adolescence to young adulthood

Although borderline personality disorder (BPD) traits decline from adolescence to adulthood, comorbid psychopathology such as symptoms of major depressive disorder (MDD), alcohol use disorder (AUD), and drug use disorders (DUDs) likely disrupt this normative decline. Using a longitudinal sample of female twins (N = 1,763), we examined if levels of BPD traits were correlated with changes in MDD, AUD, and DUD symptoms from ages 14 to 24. A parallel process biometric latent growth model examined the contributions of genetic and environmental factors to the relationships between developmental components of these phenotypes. Higher BPD trait levels predicted a greater rate of increase in AUD and DUD symptoms, and higher AUD and DUD symptoms predicted a slower rate of decline of BPD traits from ages 14 to 24. Common genetic influences accounted for the associations between BPD traits and each disorder, as well as the interrelationships of AUD and DUD symptoms. Both genetic and nonshared environmental influences accounted for the correlated levels between BPD traits and MDD symptoms, but solely environmental influences accounted for the correlated changes between the two over time. Results indicate that higher levels of BPD traits may contribute to an earlier onset and faster escalation of AUD and DUD symptoms, and substance use problems slow the normative decline in BPD traits. Overall, our data suggests that primarily genetic influences contribute to the comorbidity between BPD features and substance use disorder symptoms. We discuss our data in the context of two major theories of developmental psychopathology and comorbidity.