The OCI-R: validation of the subscales in a clinical sample

Externally orienting cues improve cognitive control in OCD

BACKGROUND AND OBJECTIVES

An executive overload model of obsessive-compulsive disorder (OCD) posits that broad difficulties with executive functioning in OCD result from an overload on the executive system by obsessive thoughts. It implies that, if individuals with OCD "snap out" of their obsessive thoughts, their performance on neurocognitive tasks will improve.

METHODS

We test this prediction using the revised Attention Network Test, ANT-R, and distinct subsamples of data from unmedicated OCD and healthy controls (HC). ANT-R includes Simon and Flanker tasks; in both, incongruent trials take longer to resolve ('conflict costs'). On some trials, a warning cue helps participants to respond faster ('alerting benefits'). In OCD (N = 34) and HC (N = 46), matched on age, IQ, and sex, we tested (1) the effect of OCD on alerting benefits, and (2) the effect of OCD on warning cue related reductions in conflict costs. In a distinct subsample of OCD (N = 32) and HC (N = 51), we assessed whether alerting benefits and cue-related reductions in conflict costs are associated differently with different OCD symptoms.

RESULTS

A warning cue can help individuals with OCD more than HC to improve performance on Simon and Flanker tasks. This effect is positively associated with severity of contamination symptoms.

LIMITATIONS

This study did not directly assess how distracted participants are by obsessive thoughts. It relied on the ANT-R subtraction measures. Symptom severity was assessed using self-report measures.

CONCLUSIONS

Difficulties in resolving conflict during decision-making in OCD can be modulated by a warning cue presented immediately before an attentional task.

Emotion-related impulsivity across transdiagnostic dimensions of psychopathology

OBJECTIVE

Several dimensions have received attention for their potential role in explaining shared variance in transdiagnostic symptoms of psychopathology. We hypothesized emotion-related impulsivity, the trait-like tendency toward difficulty restraining responses to emotion, would relate to symptoms of psychopathology, with two separable dimensions of emotion-related impulsivity relating distinctly to internalizing and externalizing symptoms.

METHOD

Across two studies, we tested hypotheses using structural equation models of emotion-related impulsivity and multiple indicators of internalizing, externalizing, and thought symptoms.

RESULTS

In Study 1 (658 undergraduates), emotion-related impulsivity was highly correlated with the general psychopathology (p) factor. In study 2 (421 Mechanical Turk participants), models did not support a general p factor; however, we replicated the hypothesized associations of emotion-related impulsivity dimensions with internalizing and externalizing factors. Across both studies, forms of emotion-related impulsivity uniquely and differentially related to internalizing and externalizing symptoms.

CONCLUSIONS

Findings indicate emotion-related impulsivity may help explain transdiagnostic dimensions of psychopathology, such as the p factor.

The effectiveness of unguided self-help psychological interventions for obsessive-compulsive disorder: A meta-analysis of randomized controlled trials

BACKGROUND

Evidence-based psychological interventions exist for individuals with obsessive-compulsive disorder (OCD), but many individuals with OCD are unable to access them because of barriers, such as geographical isolation, treatment cost, and stigma etc. Unguided self-help psychological intervention has emerged as a potential solution to this problem. However, there is limited research on its overall effectiveness. This study aimed to address this gap.

METHODS

Comprehensive searches from inception to 1st Jan 2023 were conducted in both international (PubMed, Embase, PsycINFO, International clinical trials registry platform of WHO) and Chinese (China National Knowledge Infrastructure, WeiPu, WanFang, Chinese Clinical Trial Registry) databases. The registered protocol is accessible at https://doi.org/10.17605/OSF.IO/FKB5W. We included randomized controlled trials (RCTs) comparing unguided self-help psychological interventions to control groups for individuals with OCD. The primary outcome was OCD symptom severity, with Hedges' g calculated post-intervention. Heterogeneity was deemed to be low, moderate, and high if the I2 value was quantified 25%, 50%, and 75% respectively. Relative Risks (RRs) was calculated for dropout rates post-intervention. Random-effects models were used for all analyses.

RESULTS

12 RCTs comparing unguided self-help psychological interventions to control groups were identified, with a total of 20 comparisons and 769 OCD patients. Overall, unguided self-help psychological interventions demonstrated a significant moderate effect on reducing OCD symptom severity (g = -0.42; 95% CI [-0.69; -0.14]) compared to control groups, with a moderate heterogeneity (I2 = 59%; 95% CI [22.73; 78.38]). This finding remained significant in sensitivity analyses for the self-rated Yale-Brown Obsessive-Compulsive Scale (Y-BOCS; k = 7, g = -0.46; 95% CI [-0.71; -0.2]) and after removing an outlier (g = -0.37; 95% CI [-0.55; -0.19]), but not for the clinician-rated Y-BOCS (k = 4, g = -0.78; 95% CI [-2.75; 1.19]) and Obsessive Compulsive Inventory-Revised (k = 6, g = -0.26; 95% CI [-0.53; 0]). Subgroup analyses revealed a significant difference in effect size between studies conducting intention-to-treat and completers-only analyses (p = .01). The completers-only analyses demonstrated a moderate significant effect (g = -0.65; 95% CI [-1.08; -0.21]), whereas the effect of the intention-to-treat analyses was not significant (g = -0.18; 95% CI [-0.36; 0]). Participants in the unguided self-help groups exhibited a significantly higher dropout rate (RR = 2.08; 95% CI [1.53; 2.81]) compared to control groups. Furthermore, participants recruited from the community had a higher likelihood of dropping out compared to those recruited from clinical settings (p < .001). Additionally, participants who received cognitive-behavioural therapy intervention were more likely to drop out than those who received other types of intervention (p < .001). Most trials (92%) were rated at a high risk of bias.

CONCLUSION

Unguided self-help psychological interventions demonstrate potential effectiveness in alleviating OCD symptom severity post-intervention. However, caution should be exercised when interpreting the results due to high risk of bias across trials and the relatively small sample size. And the considerable dropout rate might hinder treatment effects. Future studies with strict methodology should investigate the long-term effectiveness of unguided self-help psychological interventions for OCD, explore the reasons for high dropout rates, and improve intervention adherence.

Changes in substance use and engagement in gaming/gambling in persons with severe mental illness during the COVID-19 pandemic and earthquakes: a community study in two points

Introduction

External stressors, such as COVID-19 pandemic and earthquake, can cause an increase in substance use and addictive behavior in persons with severe mental illnesses (SMI). We analyzed the changes and predictors of substance use and addictive behavior in SMI during these double disasters in Croatia.

Methods

Questionnaires exploring the presence of substance or behavior addiction disorder, mental ill health [Depression Anxiety Stress Scales-21 (DASS-21), Insomnia Severity Index (ISI), Perceived Stress Scale (PSS), Obsessive-Compulsive Inventory-Revised], coping mechanisms, and perceived social support [Multidimensional Scale of Perceived Social Support (MSPSS)] were administered among 90 participants with SMI included in the RECOVER-E study in May/June 2020 (first COVID-19 wave, Zagreb earthquake) and in December 2020/January 2021 (second COVID-19 wave, Petrinja earthquake).

Results

In both time points, a major increase was observed in tobacco smoking (25.0%; 28.6%, respectively) predicted by discontinuation of antidepressants and higher DASS-21 score. Increased sedative use was observed (24.4%; 23.8%, respectively) predicted by higher PSS and ISI scores, lower MSPSS scores, antipsychotic discontinuation and not receiving community mental health team (CMHT) service.

Discussion

In persons with SMI during a double disaster special attention needs to be given to reducing mental-ill health and stress, providing social support and continuity of psychiatric care, through medications and CMHTs.

Classifying excessive exercise: Examining the relationship between compulsive exercise with obsessive-compulsive disorder symptoms and disordered eating symptoms

OBJECTIVE

There remains a lack of consensus around nosology for compulsive exercise (CE). Although widely observed in eating disorders (ED), CE shares theoretical overlap with obsessive-compulsive disorder (OCD), where exercise compulsions occur in response to obsessions. Yet, there is limited and mixed evidence of a relationship between CE with OCD. This study aims to explore the appropriate diagnostic classification of CE through examination of CE in relation to OCD, obsessional thinking, and ED symptoms.

METHOD

Two hundred and eighty one adults with mental health symptoms, dieting, and exercise behaviour completed measures of OCD, CE, and disordered eating symptoms. Regression and Receiver Operating Characteristic analyses examined relationships between dimensions of CE with OCD and ED symptoms, and the predictive ability of CE assessment for detecting threshold OCD and ED symptoms.

RESULTS

CE assessment was poor at predicting threshold OCD symptoms, probable Anorexia Nervosa, and Binge Eating Disorder and moderate at detecting probable disordered eating and Bulimia Nervosa. Associations between CE and OCD symptoms were not significant after adjustment for ED symptoms. Obsessional thinking was associated only with lack of exercise enjoyment.

CONCLUSIONS

Results indicate that excessive exercise might represent a distinct disorder, with some shared traits across CE, OCD and ED symptoms. Findings question the utility of adaptation of OCD diagnostic criteria for CE. Assessment and treatment implications are considered.

Improving adherence to unguided Internet-based therapy for obsessive-compulsive disorder: A randomized controlled trial

BACKGROUND

Adherence to internet-based cognitive-behavioral therapy (iCBT) is often low, possibly reducing its potential. The current study set out to test whether adherence and effects of unguided iCBT for obsessive-compulsive disorder (OCD) could be improved by varying the degree of autonomy in which modules are completed (free choice vs. fixed order).

METHODS

We randomized 151 individuals with OCD to either an unguided iCBT with a fixed (iCBTfixed) or a free-choice (iCBTfree+) order of the modules. We assessed participants at baseline (t0), eight weeks (t1), and 16 weeks (t2). Primary outcomes were adherence (utilization time, modules completed) and change in OCD severity (Y-BOCS). Secondary outcomes included depression, self-esteem, and treatment satisfaction. We calculated intent-to-treat (ITT) and complete case (CC) analyses.

RESULTS

Analyses showed that both iCBT programs significantly reduced OCD severity. While groups did not differ on the ITT analyses, for the CC analyses, a greater improvement was found in the iCBTfixed in comparison to the iCBTfree+ group regarding OCD severity and quality of life, with medium effect sizes from t0 to t1 (ηp2 = 0.067-0.077). Time of utilization and number of modules completed did not differ between groups.

LIMITATIONS

No placebo control group, short follow-up period, self-report assessment.

CONCLUSIONS

iCBT is effective in improving OCD. Despite similar adherence in the fixed versus the free-choice module order, the study offers tentative evidence that a fixed order of content is associated with better effects. More research on the effects of adherence on outcome is necessary.

Obsessive-Compulsive Symptom Dimensions and Their Relationships with Obsessive Beliefs: A Structural Equation Modeling Analysis

Dysfunctional beliefs are central in the development and maintenance of obsessive-compulsive disorder (OCD) as well as its treatment. Yet, research suggests that not all dysfunctional beliefs are equally important for each of the symptom dimensions of OCD. However, results are inconsistent in that studies contradict each other regarding the associations between specific symptom dimensions and belief domains. The aim of the present study was to clarify which belief domain is specifically associated with which OCD symptom dimension. Results could help to tailor treatments more specifically to the patient's OCD symptom dimension. In- and outpatients with OCD (N = 328; 43.6% male and 56.4% female) filled out questionnaires on symptom dimensions of OCD (Obsessive-Compulsive Inventory Revised) and dysfunctional beliefs (Obsessive Beliefs Questionnaire). A structural equation model analysis was conducted to identify the associations between dysfunctional beliefs and symptom dimensions. Our results showed that perfectionism/intolerance of uncertainty was associated with hoarding and symmetry/ordering, (2) overestimation of threat/inflated responsibility was associated with checking compulsions, and (3) importance of thoughts/control of thoughts was associated with obsessing. These results were largely supported by a backward selection. Our results demonstrated associations of specific dysfunctional beliefs and specific OCD symptom dimensions. However, future studies are necessary to replicate these findings with other measures (e.g., clinician ratings).

The Placement of Obsessive-Compulsive Symptoms Within a Five-Factor Model of Maladaptive Personality

Dimensional models of obsessive-compulsive (OC) symptoms, as seen in obsessive-compulsive disorder (OCD), are instrumental in explaining the heterogeneity observed in this condition and for informing cutting-edge assessments. Prior structural work in this area finds that OC symptoms cross-load under both Negative Affectivity and Psychoticism traits within the Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM-5) Alternative Model of Personality Disorder (AMPD). However, tests of OC symptoms in conjunction with assessments of the full AMPD structure and its 25 lower-level facets representing narrower symptom content are lacking. We applied joint exploratory factor analysis to an AMPD measure (Personality Inventory for DSM-5; PID-5) and OC symptom data from two separate samples (total N = 1,506) to locate OC symptoms within AMPD space. OC symptoms cross-loaded on Negative Affectivity, Psychoticism, and on the low end of Disinhibition. We also report exploratory analyses of OC symptom subscales with PID-5 variables. Results are discussed in the context OC symptoms' location in PID-5 space, implications for assessment, and placement of OCD within the Hierarchical Taxonomy of Psychopathology.

Clinical Considerations for an Evidence-Based Assessment for Obsessive-Compulsive Disorder

Obsessive-compulsive disorder (OCD) is an impairing mental health disease, generally beginning in childhood, affecting up to ∼3% of the population. Using evidence-based assessments (EBAs) is the starting point for the accurate diagnosis and treatment of OCD. EBAs consist of structured and semistructured clinician-administered interviews, parent-report and child-report, and self-report for adults. This article details the practical application, psychometric properties, and limitations of available assessments to determine the presence of OCD and evaluate OCD symptom severity. The following reviews measurement of constructs relevant to OCD (ie, insight, family accommodation, impairment) and details considerations for best clinical interview practices.

Formal vs. intuitive categorization and obsessive-compulsive symptoms

BACKGROUND AND OBJECTIVES

Obsessive-compulsive disorder (OCD) is often characterized by rigidity regarding rules and perfectionism, which suggests a formal reasoning style. However, other characterizations suggest an overreliance on internal cues for behavior termination, which suggests a more intuitive reasoning style. We examine reasoning styles in OCD by assessing categorization preferences traditionally classified to rule-based and family resemblance categorization.

METHOD

An initial study (n = 41) and an online replication (n = 85) were conducted. In both studies, groups scoring high and low on OCD symptoms were compared. Categorization preferences and confidence ratings were examined via a modification of a classic categorization task. The task was administered in three conditions: under time limits, with no time limits, and with explicit explanation of both categorization styles.

RESULTS

Aggregating results from both studies showed that obsessive-compulsive symptoms were associated with a reduced preference for rule-based categorization reflecting a tendency towards a more intuitive, non-formal reasoning style. This preference was apparent even when rules were explicitly described. Group differences regarding confidence were inconclusive.

LIMITATIONS

Generalizing results to the clinical population requires further research, and specificity to OC symptoms should be determined.

CONCLUSIONS

Challenging the expected association between OCD and rigidity and perfectionism, findings support suggestions that OCD reasoning strays from formal reasoning. This may explain some of the subjective and idiosyncratic rules adopted by individuals with OCD.

Empirically Defining Treatment Response and Remission in Obsessive-Compulsive Disorder Using the Obsessive-Compulsive Inventory-Revised

In clinical trials of obsessive-compulsive disorder (OCD), clinical outcomes are generally measured using lengthy clinician-administered interviews. However, in routine clinical practice, many clinicians lack the time to administer such instruments. This study evaluated cutoffs for treatment response and remission in OCD using the self-rated Obsessive-Compulsive Inventory-Revised (OCI-R). Data from 349 patients in three clinical trials of cognitive-behavioral therapy for OCD were pooled for analysis. The OCI-R was compared to gold-standard criteria for response and remission based on the clinician-administered Yale-Brown Obsessive Compulsive Scale and the Clinical Global Impression Scale. The results showed that a ≥40% reduction on the OCI-R was the optimal cutoff for treatment response, with a sensitivity of 0.72 and a specificity of 0.79. For remission status, the optimal cutoff was ≤8 points on the OCI-R, with a sensitivity of 0.57 and specificity of 0.83. Results from additional analyses using the 12-item version of the OCI were similar. These cutoffs provide a simple and time-efficient way to help determine treatment response and remission in OCD when the administration of clinician-administered instruments is unfeasible.

Altered frontoparietal connectivity in patients with obsessive-compulsive disorder during an fMRI cognitive reappraisal task

Patients with obsessive-compulsive disorder (OCD) present increased brain activity in orbitofrontal and limbic regions when experiencing negative emotions, which could be related to deficits in emotion regulation abilities. 30 OCD patients and 29 healthy controls (HC) performed a cognitive reappraisal functional magnetic resonance imaging (fMRI) task and completed emotion regulation and OCD symptomatology questionnaires. Besides task activation, connectivity was also compared between groups through psychophysiological interaction analysis (PPI), using regions previously reported to be hyperactive in OCD as seeds. Finally, brain-behavior correlations were performed between activation/connectivity strength in group differential regions and the questionnaires' scores, as well as the emotional ratings reported during the task. Behaviorally, patients with OCD were less successful than controls at lowering the emotional impact of negative images. At the brain level, there were no significant between-group differences in brain activation. Contrarily, PPI analyses showed that HC had increased frontoparietal connectivity when experiencing negative emotions in comparison to OCD patients, while this pattern was reversed when regulating emotions (increased connectivity in patients). Finally, frontoparietal connectivity was correlated with measures of emotion regulation success and OCD symptomatology. Our findings point towards frontoparietal altered connectivity as a potential compensatory mechanism during emotion regulation in OCD patients.

Mental health burden of empty nose syndrome compared to chronic rhinosinusitis and chronic rhinitis

BACKGROUND

Empty nose syndrome (ENS) is characterized by the paradoxical perception of nasal obstruction despite patent sinonasal anatomy after surgery. We investigated the relationship between ENS, and anxiety, depression, obsessive-compulsive disorder, and somatic symptom disorder (SSD) compared to individuals with chronic rhinitis (CR) and chronic rhinosinusitis (CRS).

METHODS

This cross-sectional survey study compared ENS and CR and CRS patients. A total of 116 patients participated: 58 ENS patients from digital support groups, and 58 CRS and CR patients from tertiary rhinology clinics. Study participants completed four validated surveys: (1) Empty Nose Syndrome 6-Item Questionnaire, (2) Rhinosinusitis Disability Index (RSDI), (3) Obsessive Compulsive Inventory - Revised (OCI-R), and (4) PRIME MD Patient Health Questionnaire (PHQ).

RESULTS

ENS patients exhibited a mean RSDI of 78.6, 95% confidence interval [CI] 72.8-84.5, compared to 25.2, 95% CI 18.6-31.8 for CRS/CR patients (p < 0.0001). This difference was seen across all subdomains. Using the PHQ, 53% of ENS patients met diagnostic thresholds for SSD compared to 14% of CRS patients (p < 0.0001). In relation to obsessive compulsive disorder (OCD), 18.37% of ENS patients compared to 8.62% of CRS/CR patients scored above the diagnostic threshold (>21) on the OCI-R questionnaire (p = 0.159).

CONCLUSION

ENS patients had diminished sinonasal quality of life and a higher prevalence of comorbid anxiety and depression, compared to CR and CRS. ENS patients were more likely to exceed thresholds for OCD and SSD compared to controls. Future studies are needed to assess the role of SSD in ENS to help optimize treatment for these complex patients.

I Think I Can: The Role of Self-Efficacy in Exposure to Contamination

Introduction: Self-efficacy (SE) has been explored extensively within the field of psychology. Despite a rich literature demonstrating its positive effect on various behavioral outcomes, including psychological treatment outcomes, little is known about the impact of SE on outcomes related to obsessive-compulsive disorder. To fill this critical gap in the literature, this study aims to examine the relationship between SE beliefs and contamination-related approach behavior and to determine whether increasing SE may improve engagement in exposure-based interventions for contamination fears. Method: Participants (N = 120) were randomly assigned to complete a contamination-related behavioral approach task (CR-BAT) immediately following either a SE-boosting exercise or a non-SE related control. Results: Self-reported contamination-relevant SE was positively correlated with approach behavior during the CR-BAT. However, there were no differences between conditions in contamination-related SE or approach behavior during the CR-BAT. Nevertheless, participants in the SE-boosting condition reported lower levels of anxiety during the CR-BAT than did those in the control condition, suggesting that the manipulation was effective in reducing subjective distress. Discussion: Future research using more effective methods to manipulate SE is required to examine the causality of this relationship.

The global assessment of OCD

Obsessive Compulsive Disorder (OCD) is a common mental disorder that often causes great sufferance, with substantial impairment in social functioning and quality of life and affects family and significant relationships. Notwithstanding its severity, OCD is often not adequately diagnosed, or it is diagnosed with delay, leading often to a long latency between onset of the OCD symptoms and the start of adequate treatments. Several factors contribute to the complexity of OCD's clinical picture: early age of onset, chronic course, heterogeneity of symptoms, high rate of comorbidity with other psychiatric disorders, slow or partial response to therapy. Therefore, it is of primary importance for clinicians involved in diagnosing OCD, to assess all aspects of the disorder. This narrative review focuses on the global assessment of OCD, highlighting crucial areas to explore, pointing out the clinical features which are relevant for the treatment of the disorder, and giving an overview of the psychometric tools that can be useful during the screening procedure.

Any overlap between orthorexia nervosa and obsessive-compulsive disorder in Lebanese adults? Results of a cross-sectional study and validation of the 12-item and 4-item obsessive-compulsive inventory (OCI-12 and OCI-4)

BACKGROUND

Orthorexia Nervosa (ON), a compulsive obsession with vigorous eating, has increasingly caught researchers' attention. Although Orthorexia Nervosa has not been labeled an eating disorder, research about ON highlighted a strong link with anorexia nervosa or obsessive-compulsive disorder (OCD). Therefore, this study aimed to (1) validate the Arabic version of the Obsession-Compulsion Inventory (OCI-12 and OCI-4) and (2) check if there is an overlap between ON and OCD among a sample of Lebanese adults.

METHODS

This cross-sectional study involved 487 Lebanese participants between July and August 2021. The Dusseldorf Orthorexia Scale (DOS) was used to assess ON; scores between 25 and 29 indicate probable ON, whereas scores ≥ 30 indicate ON tendencies. A confirmatory factor analysis (CFA) was carried out using SPSS AMOS v.24 on the OCI-12 and OCI-4 scales' items. The root mean square error of approximation (RMSEA) statistic, the Tucker Lewis Index (TLI) and the comparative fit index (CFI) were used to evaluate the goodness-of-fit of the model.

RESULTS

The CFA results indicated an excellent fit of the model: the Maximum Likelihood Chi-Square = 147.73 and Degrees of Freedom = 48, which gave a χ2/df = 3.08, TLI = 0.934, CFI = 0.952, and RMSEA = 0.065 [95% CI 0.054-0.078]. The fit indices of the one-factor structure of the OCI-4 were excellent as well: χ2/df = 6.15/2 = 3.08, TLI = 0.95, CFI = 0.98 and RMSEA = 0.065 [95% CI 0.007-0.127]. The Area Under the Curve was 0.600 [95% CI 0.524-0.674]. There was no cutoff value that showed good sensitivity or specificity at the same time. At the DOS cutoff of 25, sensitivity was 19.1%, whereas the specificity was 90.6%. The positive and negative predictive values (PPV and NPV) at this cutoff value were 24.4% and 88.7% respectively. At the DOS cutoff of 30, sensitivity was 8.8%, whereas the specificity was 94.3%. The PPV and NPV at this cutoff value were 10.6% and 92.5% respectively. The results showed that higher total OCD scores (Beta = 0.15) were significantly associated with more ON tendencies. Moreover, higher OCD washing scores (Beta = 0.52), physical activity index (Beta = 0.06), and Body Mass Index (Beta = 0.17) were significantly associated with more ON tendencies.

CONCLUSION

The present results suggest that ON, as measured by the DOS, shares more common features with disordered eating and cannot adequately predict the presence of OCD symptoms.

Grit predicts less severe hoarding symptoms among patients seeking treatment at an anxiety disorders clinic

Grit is associated with positive outcomes in nonclinical samples. However, no studies have examined grit in relation to psychopathology in patients with clinical mood or anxiety disorders. Research and clinical experience suggest that individuals who hoard struggle with characteristics associated with grit, such as task persistence, impulsivity, and self-control. The authors tested the hypothesis that hoarding symptoms are associated with less grit in a sample of individuals (N = 72) presenting for treatment to an anxiety disorders clinic. After covarying symptoms of the four mood and anxiety disorders most commonly comorbid with hoarding disorder (viz. depression, generalized anxiety, social anxiety, and obsessive-compulsive disorder), the authors found that hoarding symptoms were associated with less grit, and the effects were medium-to-large. These results indicate that grit is worthy of investigation in individuals with hoarding disorder using methodologies that permit inferences about causality, and with attention to clinical implications for prevention or treatment.

Responsiveness and other psychometric properties of the Y-BOCS Severity Scale-Second Edition (Y-BOCS-II) in a Dutch clinical sample

The Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) is a widely used clinician-rated interview to assess the presence and severity of obsessive-compulsive disorder (OCD). The scale is revised (Y-BOCS-II) to overcome several psychometric limitations, for example by extending the scoring for better discrimination within higher severity levels. The aim of the present study was to examine the responsiveness and other psychometric properties of the Y-BOCS-II Severity Scale in a Dutch clinical sample. The Y-BOCS-II is translated into Dutch (Y-BOCS-II) and administered to 110 patients seeking therapy for OCD. This was done twice, before and after treatment. The original Y-BOCS was simultaneously rated. Self-report measures regarding depression, symptom severity and OCD symptoms were assessed. The Y-BOCS-II has a good internal consistency (Cronbach's α=0.84), test-retest (ICC=0.89) and inter-rater reliability (ICC=0.98). The construct validity proved to be modest to good. The responsiveness over time was in favour of the Y-BOCS-II, compared with the YBOCS-I, particularly in the moderate-severely affected OCD patients. The Y-BOCS-II severity scale is a reliable and valid instrument for accurately assessing the severity of OCD symptoms and for measuring treatment-induced change. This second version also has clinical and psychometric advantages over the YBOCS-I. When these findings are sufficiently replicated, use of the YBOCS-II as the new common standard seems recommendable.

A functional magnetic resonance imaging study of frontal networks in obsessive-compulsive disorder during cognitive reappraisal

Background

Patients with obsessive-compulsive disorder (OCD) present difficulties in the cognitive regulation of emotions, possibly because of inefficient recruitment of distributed patterns of frontal cortex regions. The aim of the present study is to characterize the brain networks, and their dysfunctions, related to emotion regulation alterations observed during cognitive reappraisal in OCD.

Methods

Adult patients with OCD (n = 31) and healthy controls (HC; n = 30) were compared during performance of a functional magnetic resonance imaging cognitive reappraisal protocol. We used a free independent component analysis approach to analyze network-level alterations during emotional experience and regulation. Correlations with behavioral scores were also explored.

Results

Analyses were focused on six networks encompassing the frontal cortex. OCD patients showed decreased activation of the frontotemporal network in comparison with HC (F(1,58) = 7.81, p = 0.007) during cognitive reappraisal. A similar trend was observed in the left frontoparietal network.

Conclusions

The present study demonstrates that patients with OCD show decreased activation of specific networks implicating the frontal cortex during cognitive reappraisal. These outcomes should help to better characterize the psychological processes modulating fear, anxiety, and other core symptoms of patients with OCD, as well as the associated neurobiological alterations, from a system-level perspective.

Needs of patients with early psychosis: A comparison of patient's and mental health care provider's perception

BACKGROUND

Needs define the capacity of a patient to benefit from health care services and a systematic assessment of needs allows planning and delivery of effective treatment to suit patients. This study aimed to understand the (a) needs felt by patients and those perceived by the care providers (CPs), (b) agreement between patients and CPs in the identified needs and (c) factors associated with unmet needs.

METHODS

Participants (N = 215) were recruited through convenience sampling from the Early Psychosis Intervention Programme (EPIP). Data was captured from patients and CPs using the Camberwell Assessment of Needs Short Appraisal Schedule (CANSAS).

RESULTS

Patients and CPs identified an average of 4.06 and 3.84 needs, respectively. The highest number of unmet needs were identified for the social (50% of patients and CPs) and health domains (31.13% of patients' vs. 28.30% of CPs). Company, intimate relationships, psychotic symptoms, money, sexual expression and psychological distress, information and benefits were the unmet needs identified by patients, whereas company, intimate relationships, physical health, and daytime activities were identified by CPs. The concordance between patients and CPs was low with majority of the items scoring slight to fair agreement (Cohen's kappa = 0-0.4). Older age, depression, severe anxiety and having Obsessive-Compulsive Disorder (OCD) were positively associated with unmet needs in patients.

CONCLUSION

While there was an overall consensus on the total needs and met needs between patients and CPs, the level of agreement between the two groups on various items were low. Different perceptions regarding unmet needs were noted between the groups. A holistic approach that takes into account different facets of the needs of patients together with strategic planning to address unmet needs might improve treatment outcomes and satisfaction.

Long durations from symptom onset to diagnosis and from diagnosis to treatment in obsessive-compulsive disorder: A retrospective self-report study

BACKGROUND

Although obsessive-compulsive disorder (OCD) is one of the most common mental disorders, it takes up to 17 years for patients with OCD to receive adequate therapy. According to existing outdated literature, this study aimed to investigate the current duration between symptom onset and diagnosis and between diagnosis and the beginning of therapy separately.

METHODS

In a cross-sectional study, N = 100 patients diagnosed with OCD undergoing treatment in a psychiatric outpatient department were assessed, using self-report questionnaires on sociodemographic and clinical variables. Based on self-reported information, the durations between age at symptom onset and age at diagnosis, and between age at diagnosis and beginning of therapy were calculated. To investigate associated factors, two subgroups of patients, one with a short duration between symptom onset and diagnosis < 7 years, and another with a long duration between symptom onset and diagnosis ≥ 7 years, respectively, were compared.

RESULTS AND CONCLUSION

Patients reported first symptoms of OCD at a mean age of 18.72 years. The mean duration between age at symptom onset and age at diagnosis was 12.78 years and the mean duration between age at diagnosis and the beginning of therapy was 1.45 years. Subgroup comparison indicated that patients with a short duration between symptom onset and diagnosis were significantly younger than patients with a long duration. However, patients with a short duration between symptom onset and diagnosis were at an older age when they reported first symptoms of OCD. Further, they showed less severe symptoms of OCD, higher functioning levels, and less self-stigmatization than patients with a long duration. It can be concluded that the duration until patients with OCD are diagnosed correctly and receive adequate treatment is still very long. Therefore, the duration between symptom onset and diagnosis should be shortened. Further, the duration between diagnosis and the beginning of therapy could be a good additional approach to reduce the overall duration of untreated disorder.

Short communication: A report of the first twelve months of an early intervention service for obsessive-compulsive disorder (OCD)

OBJECTIVES

To present a report on the first twelve months of an early intervention service for patients with obsessive-compulsive and related disorders.

METHODS

Demographic and clinical data including changes in the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) and the Obsessive Compulsive Inventory - Revised (OCI-R) were reported for 48 patients referred to the Western Sydney Obsessive-Compulsive and Related Disorders Service during the first 12 months of its operation.

RESULTS

The service provided education, training and specialised quaternary level assessment and recommendations to patients who have already been assessed by a psychiatrist and/or mental health worker within early intervention teams for psychosis, anxiety clinics and other public psychiatric services. The service failed to reach OCD sufferers early in their course of illness with the mean time from symptom onset being 9.4 years. The use of objective measures such as the Y-BOCS and OCI-R at follow-up was poor and 86.0% (n = 37) remained in treatment at 12 months.

CONCLUSIONS

An early intervention service for OCD is unlikely to be able to assist sufferers early in their course of illness if it is associated with quaternary clinical services or early intervention programmes for psychosis. Efforts might be better focused on providing education and on early screening of young people in non-clinical settings.

Deontological Guilt and Disgust Sensitivity Modulate Moral Behaviour

OBJECTIVE

Deontological Guilt (DG), and Altruistic Guilt (AG) emerge from the appraisal of violating an internalized rule or an altruistic principle, respectively. DG is strictly connected with Disgust Sensitivity and plays a key role in the development and maintenance of Obsessive-Compulsive Disorder (OCD). Previous studies investigated how DG affects responses to hypothetical moral dilemmas, however how DG and Disgust Sensitivity interact modulating moral behavior is still unknown.

METHODS

STUDY 1. 46 healthy participants performed an ecological paradigm in which people can spontaneously decide to lie to obtain a reward (egoistic lie) or give it away (altruistic lie) after three emotional inductions: DG, AG or neutral. Furthermore, OCD traits, Morality, Guilt Propensity and Disgust Sensitivity were assessed by means of questionnaires. STUDY 2. 27 participants from the original sample were retested during the COVID-19 lockdown in Italy to ascertain whether the pandemic modified traits related to morality, disgust, guilt or OCD symptoms and whether these changes modulated moral behavior (measured by a task in which cheating was associated to higher pay-offs).

RESULTS

STUDY 1. Compared to the neutral, after the DG induction participants produced less altruistic and more egoistic lies. This effect was stronger in participants with high Disgust Sensitivity. STUDY 2. During the COVID-19 lockdown participants became more sensitive to the Authority pillar of the Moral Foundations and more sensitive to Disgust: this increment in deontological morality affected (im) moral behavior depending on changes in Disgust Sensitivity.

CONCLUSIONS

Our data suggest that people with high Disgust Sensitivity are more affected by deontological inductions which translate to higher immorality, supposedly by lowering their moral self-image. These results might have important clinical implications as they suggest that addressing Disgust Sensitivity in therapy, might also decrease the effect of guilt on patients' behavior.

Acquisition and maintenance of disgust reactions in an OCD analogue sample: Efficiency of extinction strategies through a counter-conditioning procedure

BACKGROUND

Obsessive-compulsive disorder (OCD) has long been considered as an anxiety disorder, disgust is the dominant emotion in contamination-based OCD. However, disgust seems resistant to exposure with response prevention partly due to the fact that disgust is acquired through evaluative conditioning.

AIMS

The present research investigates a counter-conditioning intervention in treating disgust-related emotional responses in two groups of individuals with high (High contamination concerns, HCC, n = 24) and low (Low contamination concerns LCC, n = 23) contamination concerns.

METHODS

The two groups completed a differential associative learning task in which neutral images were followed by disgusting images (conditioned stimulus; CS+), or not (CS-). Following this acquisition phase, there was a counter-conditioning procedure in which CS+ was followed by a very pleasant unconditional stimulus while CS- remained unreinforced.

RESULTS

Following counter-conditioning, both groups reported significant reduction in their expectancy of US occurrence and reported less disgust with CS+. For both expectancy and disgust, reduction was lower in the HCC group than in the LCC group. Disgust sensitivity was highly correlated with both acquisition and maintenance of the response acquired, while US expectation was predicted by anxiety.

CONCLUSION

Counter-conditioning procedure reduces both expectations and conditioned disgust.

Patterns of Cannabis Use Among Individuals with Obsessive-Compulsive Disorder: Results from an Internet Survey

BACKGROUND

Americans increasingly use cannabis, including those with psychiatric disorders. Yet little is known about cannabis use among individuals with obsessive-compulsive disorder (OCD). Thus, we conducted the first survey of cannabis users with OCD.

METHODS

Adults with OCD (i.e., prior professional diagnosis and/or score above the cutoff on a validated scale) who reported using cannabis were recruited from internet sources to complete a survey querying demographic information, medical/psychiatric history, cannabis use patterns, and perceived cannabis effects.

RESULTS

Of 1096 survey completers, 601 met inclusion criteria. Inhalation/cannabis flower were the most common method/formulation participants endorsed; most identified using high-potency cannabis products; 42% met criteria for cannabis use disorder. Nearly 90% self-reported using cannabis medicinally, 33.8% had a physician's recommendation, and 29% used specifically to manage OCD symptoms. Most participants reported cannabis improved obsessions/compulsions; those with increased obsession severity perceived less benefit. Finally, most participants were not receiving evidence-based OCD treatment, and the odds of receiving treatment decreased with increased cannabis use.

CONCLUSIONS

In this survey, participants with OCD reported both subjective benefits and harms from cannabis use. Future research should clarify the risks and benefits of cannabis use to those with OCD and develop treatment models to better support this population.

Anxiety symptoms in first-episode psychosis

AIM

Anxiety disorders and symptoms are common in people with psychotic disorders, having a negative impact on clinical status, function level and overall prognosis. However, research on the significance of anxiety in predicting remission and long-term functioning in first-episode psychosis (FEP) is still scarce. This study investigated the effects of anxiety and obsessive-compulsive symptoms (OCS) on clinical and functional improvement in individuals with FEP.

METHODS

FEP patients (N = 97) aged 18-40 years were recruited from the University Hospital District of Helsinki and the City of Helsinki. Psychotic and anxiety symptoms were measured using the Brief Psychiatric Rating Scale. Obsessive-compulsive symptoms were assessed using the Obsessive-Compulsive Inventory (OCI-R), and functioning was evaluated using the Social and Occupational Functioning Assessment Scale (SOFAS). Follow-up measurements were performed at 2 and 12 months. We specifically studied whether anxiety and obsessive-compulsive symptoms at the 2-month follow-up assessment, at a time when the initial treatment response had been achieved, would predict outcomes at 12 months.

RESULTS

Symptoms of anxiety and OCS correlated moderately with each other and psychotic symptoms, but at the 12-month follow-up, OCS no longer correlated significantly with psychotic and anxiety symptoms. When the level of psychotic symptoms was adjusted for, more severe OCS at the 2-month follow-up was associated with a lower rate of remission at 12 months, whereas a higher level of anxiety symptoms at 2 months was associated with better functioning at 12 months.

CONCLUSIONS

OCS may be predictive of poorer clinical outcomes, whereas anxiety symptoms may predict better functional outcomes.

The distribution of daily affect distinguishes internalizing and externalizing spectra and subfactors

There has been increasing recognition that classically defined psychiatric disorders cluster hierarchically. However, the degree to which this hierarchical taxonomy manifests in the distribution of one's daily affective experience is unknown. In 462 young adults, we assessed psychiatric symptoms across internalizing and externalizing disorders and then used cell-phone-based ecological momentary assessment (EMA) to assess the distribution (mean, standard deviation, skew, kurtosis) of one's positive and negative affect over 3-4 months. Psychiatric symptoms were modeled using a higher-order factor model that estimated internalizing and externalizing spectra as well as specific disorders. Individualized factor loadings were extracted, and path models assessed associations between spectra and syndromes, and daily affect. Internalizing and externalizing spectra displayed broad differences in the distribution of affective experiences, while within the internalizing spectrum, syndromes loading onto fear and distress subfactors were associated with distinct patterns of affective experiences. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

The OCI-12: A syndromally valid modification of the obsessive-compulsive inventory-revised

The 18-item Obsessive-Compulsive Inventory-Revised (OCI-R) is a widely used self-report measure of Obsessive-Compulsive Disorder (OCD) symptoms, yet its factor structure does not converge with contemporary dimensional models of OCD symptoms. In addition to assessing the four core OCD dimensions, the OCI-R includes hoarding and neutralizing factors. However, since its publication, hoarding has been designated as a separate disorder, and there are concerns about the neutralizing factor's reliability and validity. The aim of this study was to evaluate a syndromally valid modification of the OCI-R. Adult samples of individuals diagnosed with OCD (n = 1087), anxiety related disorders (n = 1306), and unselected community volunteers (n = 423) completed the OCI-R and measures of anxiety and mood. Analyses excluded the 3 OCI-R hoarding items and suggested the removal of the 3 neutralizing items. Internal consistency, sensitivity and specificity to OCD clinical status, test-retest reliability, sensitivity to treatment, and convergent and discriminant validity were evaluated for the resultant 12-item scale (termed the OCI-12). The OCI-12 evidenced good to excellent psychometric properties. Clinical norms, severity benchmarks, and a clinical cutoff score were computed. In conclusion, the OCI-12 represents a syndromally valid update of the OCI-R with comparable psychometric properties and superior sensitivity and specificity.

Concurrent and prospective associations of obsessive-compulsive symptoms with suicidality in young adults: A genetically-informative study

BACKGROUND

Obsessive-compulsive disorder (OCD) has been linked with elevated risk of suicidality. However, most previous studies have been cross-sectional, and little is known about the aetiology of the association between obsessive-compulsive symptoms (OCS) and suicidality in young adults.

METHODS

Participants were members of the Child and Adolescent Twin Study in Sweden, at ages 18 (n = 9,162) and 24 (n = 3,466). Twins completed self-report measures, including assessment of OCS, suicidal ideation, and suicidal attempts. Logistic regression models tested concurrent and prospective associations of total OCS and OCS dimensions with suicidality, with and without adjustment for depression and anxiety symptoms. Genetic models tested the extent to which the main phenotypic associations were accounted for by genetic and environmental influences.

RESULTS

Total OCS were significantly associated with concurrent reports of suicidality at age 18 and 24, even when controlling for depressive and anxiety symptoms. Taboo obsessions (e.g., sexual and aggressive thoughts) were more robustly associated with suicidality than other OCS dimensions, and prospectively predicted suicidality symptoms over time, even when controlling for baseline suicide attempts. Genetic factors accounted for most of the concurrent and longitudinal covariance between OCS and suicidality, with substantial non-shared environmental influences.

LIMITATIONS

We relied on self-report measures and did not include diagnostic assessment of OCD.

CONCLUSIONS

OCS, particularly taboo obsessions, are associated with significantly elevated risk of suicidality in late adolescence and early adulthood. This relationship is explained by a combination of common genetic liability and non-shared environmental effects, suggesting that effective OCS treatment might reduce suicidality risk in this group.

High-frequency neuromodulation improves obsessive-compulsive behavior

Nearly one billion people worldwide suffer from obsessive-compulsive behaviors^1,2, yet our mechanistic understanding of these behaviors is incomplete, and effective therapeutics are unavailable. An emerging perspective characterizes obsessive-compulsive behaviors as maladaptive habit learning^3,4, which may be associated with abnormal beta-gamma neurophysiology of the orbitofrontal-striatal circuitry during reward processing^5,6. We target the orbitofrontal cortex with alternating current, personalized to the intrinsic beta-gamma frequency of the reward network, and show rapid, reversible, frequency-specific modulation of reward- but not punishment-guided choice behavior and learning, driven by increased exploration in the setting of an actor-critic architecture. Next, we demonstrate that chronic application of the procedure over 5 days robustly attenuates obsessive-compulsive behavior in a non-clinical population for 3 months, with the largest benefits for individuals with more severe symptoms. Finally, we show that convergent mechanisms underlie modulation of reward learning and reduction of obsessive-compulsive symptoms. The results contribute to neurophysiological theories of reward, learning and obsessive-compulsive behavior, suggest a unifying functional role of rhythms in the beta-gamma range, and set the groundwork for the development of personalized circuit-based therapeutics for related disorders.

An Observational Study of OCD Patients Treated With Cognitive Behavioral Therapy During the COVID-19 Pandemic

Background and Objectives: While the consequences of the COVID-19 pandemic for general mental health and the increase in anxiety and depression are clear, less is known about the potential effect of the pandemic on OCD. The purpose of this study is to collect new data to monitor the symptomatic status of patients with OCD during the period of emergency due to COVID-19 and to make a comparison between two psychodiagnostic evaluations. Methods: Eleven OCD patients and their psychotherapists were recruited. All patients had a specific psychodiagnostic assessment for OCD (SCL-90; OCI-R; Y-BOCS self-report) performed between December 2019 and January 2020 (t0), and undertook cognitive behavioral therapy (CBT) and exposure and prevention of response protocol (ERP) before the lockdown. The psychodiagnostic assessment carried out at t0 was re-administered (t1) to all patients, together with a set of qualitative questions collected through an online survey. The respective therapists were asked to document the status of the therapy and the monitoring of symptoms through use of a semi-structured interview (Y-BOCS) and a qualitative interview. Non-parametric analyses were conducted. Results: Patients reported a significant decrease in OCD symptoms. Data analysis showed a decrease in the scores across t0 and at t1 on the Y-BOCS (SR) total self-report, and on OCD symptoms' severity assessed by means of the OCI-r and SCL-90 r OC subscale, for 11 participants. Relating to the measures detected by psychotherapists, marginally significant improvements and lower scores were found in the Y-BOCS (I). An improvement in symptoms was noticed by 90.9% of the clinical sample; this was confirmed by 45.4% of the therapists, who claimed moderate progress in their patients. Conclusions: The data collected through standardized measurements at two different times, albeit relative to a small sample, assume relevance from a clinical point of view. In the literature, some studies document the worsening of OCD. However, in many studies, the type of treatment, the detection time, and the intervention period are not well-specified. These results confirm the effectiveness of CBT/ERP as an elective treatment for OCD through a specific intervention procedure.

Obsessive-compulsive disorder during COVID-19: Turning a problem into an opportunity?

The COVID-19 pandemic has prompted global measures to prevent infection. Experts assume that it is particularly affecting people with obsessive-compulsive disorder (OCD), especially those with washing compulsions. Data, however, are currently lacking. 394 participants with OCD (n = 223 washers) participated in an online survey. Change in severity of OCD symptoms, reasons participants reported for the change (e.g., reduced mobility, reduced availability of cleaning products, economic factors, interpersonal conflicts), as well as participants' beliefs and experience associated with COVID-19 were assessed. 72 % of the participants reported an increase in OCD. This increase was significantly stronger in washers compared to non-washers. The worsening of symptoms was primarily associated with reduced mobility and interpersonal conflicts. Dysfunctional hygiene-related beliefs were significantly higher in washers than non-washers and were associated with greater symptom progression. Washers were more confident than non-washers about providing other people with helpful advice related to infection preventions. Washers, however, received more negative feedback from others in response to the advice they provided than non-washers. The majority of participants with OCD were negatively affected by the COVID-19 pandemic, and the negative effects were more pronounced in washers than in non-washers. Rapid interventions for OCD should be implemented to prevent long-term deterioration.

Effects and side effects of a transdiagnostic bias modification intervention in a mixed sample with obsessive-compulsive and/or depressive symptoms-a randomized controlled trial

Obsessive-compulsive disorder (OCD) and major depression disorder (MDD) are underdiagnosed and undertreated mental disorders. Prior studies have verified the efficacy of the self-help manual My Metacognitive Training (myMCT) for patients with primary OCD. As depression and OCD share a number of (meta)cognitive biases and dysfunctional coping strategies, we examined the efficacy of myMCT in a mixed patient sample with OCD and/or depression. A total of 80 Italian-speaking individuals with symptoms of OCD and/or depression were randomized to either myMCT or to a waitlist control group (both groups had access to care as usual during the intervention). Post-assessment was carried out 6 weeks after inclusion. Scores on the Beck Depression Inventory-II scale (BDI-II) served as the primary outcome. Adverse effects were assessed with a newly devised self-report scale. Participants in the myMCT condition showed significant symptom improvement on the BDI-II scale at a medium to large effect size compared to the control group (using intention-to-treat and per protocol analyses). The intention-to-treat analyses yielded significant positive effects on the PHQ-9 scores and psychological as well as environmental well-being in favor of myMCT; for the OCI-R total score, group differences bordered significance in favor of the myMCT. The most prevalent adverse effects were feeling pressured by the suggested exercises or feeling bad due to not performing the exercises correctly. Our results indicate that the myMCT manual represents an effective program for patients with OCD as well as those with depressive symptoms in an Italian-speaking population. Adverse events due to unguided self-help deserve more attention in the future.

Unguided Internet-based cognitive-behavioral therapy for obsessive-compulsive disorder: A randomized controlled trial

BACKGROUND

Many individuals with obsessive-compulsive disorder (OCD) do not receive professional treatment due to various idiosyncratic barriers. Internet-based cognitive-behavioral therapy (iCBT) is increasingly used to narrow treatment gaps, but the efficacy of such interventions without guidance of therapists has not been well studied. This study evaluated the efficacy of an unguided iCBT that includes third-wave approaches for the treatment of OCD symptoms.

METHODS

A total of 128 individuals with self-reported OCD symptoms were randomly allocated to either an intervention group (unguided iCBT) or to a care-as-usual (CAU) control group following an anonymous baseline assessment via an online survey. Eight weeks after inclusion, a reassessment was carried out online. The Yale-Brown Obsessive-Compulsive Scale served as the primary outcome parameter for detecting symptom changes in the per-protocol sample with at least 60 minutes utilization.

RESULTS

The iCBT group showed a significantly stronger reduction of OCD symptoms with a medium effect size (η²_p  = 0.06) compared with the control condition. This effect was moderated by the general frequency of Internet usage (η²_p  = 0.08); the more time per day users spent online, the less they benefited from the intervention. Secondary outcomes revealed (1) a medium effect size on self-esteem (η²_p  = 0.06); (2) no statistically significant effects on quality of life, depression symptoms, impulsivity, or social insecurity; and (3) good acceptability of the intervention.

CONCLUSIONS

The current study provides evidence that unguided iCBT for OCD may be a viable option for individuals who experience treatment barriers. As non-compliance remains a challenge, this topic needs further research.

Atypical measures of diffusion at the gray-white matter boundary in autism spectrum disorder in adulthood

Autism spectrum disorder (ASD) is a highly complex neurodevelopmental condition that is accompanied by neuroanatomical differences on the macroscopic and microscopic level. Findings from histological, genetic, and more recently in vivo neuroimaging studies converge in suggesting that neuroanatomical abnormalities, specifically around the gray‐white matter (GWM) boundary, represent a crucial feature of ASD. However, no research has yet characterized the GWM boundary in ASD based on measures of diffusion. Here, we registered diffusion tensor imaging data to the structural T1‐weighted images of 92 adults with ASD and 92 matched neurotypical controls in order to examine between‐group differences and group‐by‐sex interactions in fractional anisotropy and mean diffusivity sampled at the GWM boundary, and at different sampling depths within the superficial white and into the gray matter. As hypothesized, we observed atypical diffusion at and around the GWM boundary in ASD, with between‐group differences and group‐by‐sex interactions depending on tissue class and sampling depth. Furthermore, we identified that altered diffusion at the GWM boundary partially (i.e., ~50%) overlapped with atypical gray‐white matter tissue contrast in ASD. Our study thus replicates and extends previous work highlighting the GWM boundary as a crucial target of neuropathology in ASD, and guides future work elucidating etiological mechanisms.

The Obsessive-Compulsive Inventory-Revised: Replication of the psychometric properties in China

The aim of this study is to replicate the findings from previous research about the psychometric properties of the Mandarin Chinese version of the Obsessive-Compulsive Inventory-Revised (OCI-R), which assesses the presence of symptoms obsessive-compulsive disorder and the distress associated with those symptoms. The final clinical sample included 80 participants from multiple psychiatric outpatient clinics in China. Participants completed the following questionnaires: the OCI-R, the Depression, Anxiety, and Stress Scale (DASS-21), the Yale-Brown Obsessive-Compulsive Scale-II (Y-BOCS-II), and the Clinical Global Impressions Scale, Severity (CGI-S). The Mandarin Chinese version of the OCI-R demonstrated good internal consistency for the total scale and each subscale. Good convergent and divergent validity was established. The Mandarin Chinese version of the OCI-R demonstrated good psychometric properties. Further research is needed to examine the factor structure of the Chinese version of the OCI-R and the extent to which it aligns with the original version.

The longitudinal structure of disgust proneness: Testing a latent trait-state model in relation to obsessive-compulsive symptoms

Although disgust proneness (DP) is increasingly recognized as a personality characteristic that confers risk for psychiatric conditions such as obsessive-compulsive disorder (OCD), the extent to which it reflects a time-varying (TV) or state-like factor versus a time-invariant (TI) or trait-like personality characteristic is unclear. In a 6-wave, 5-month longitudinal study, community participants (n = 982) recruited through ResearchMatch completed the Disgust Propensity and Sensitivity Scale Revised (van Overveld, de Jong, Peters, Cavanagh, & Davey, 2006), a measure of three variants of DP including Somatic Disgust Sensitivity, Ruminative Disgust Sensitivity, and Disgust Propensity. A latent variable (trait-state-occasion) model was applied to all of the DP dimensions. The results showed that although estimates of TI factor variance and TV factor variance were both significant for Somatic Disgust, Ruminative Disgust, and Disgust Propensity, the proportion of TI factor variance (range from .68 to .82) for the DP dimensions was substantially and significantly greater than the amount of TV factor variance (range from .18 to .32). Furthermore, while TV factor stability was statistically significant for the DP dimensions, the size of the coefficients were only moderate in magnitude. Subsequent analysis then examined the extent to which TV or TI components of DP were associated with latent OCD symptoms at each of the six time points. The results showed that estimates of the regression weight for the TI DP factor were significant and larger than those for the TV factor which were often nonsignificant. These findings suggest that DP is largely TI, and it is this TI component that is most strongly associated with OCD symptoms.

Death obsession’s potential mediational role in the relation between pregnancy-related anxiety and prenatal obsessive-compulsive disorder

The study investigated the mediator role of death obsession in the relationship between pregnancy-related anxiety and prenatal obsessive-compulsive disorder among pregnant women in the Capricorn district, South Africa. Two hundred and six conveniently selected respondents completed questionnaires individually. Statistically significant associations were found between pregnancy-related anxiety and death obsession, death obsession and prenatal obsessive-compulsive disorder, and pregnancy-related anxiety and prenatal obsessive-compulsive disorder ( ps ⩽ .05). Analysis further showed that death obsession mediates the relationship between pregnancy-related anxiety and both composite scores of a prenatal obsessive-compulsive disorder measure (Obsessive-Compulsive Inventory–Revised) and most of its components. The findings suggest that death obsession is a likely mediator that has to be studied further.

Metacognitive Training for Obsessive-Compulsive Disorder: a study protocol for a randomized controlled trial

BACKGROUND

A high number of patients with obsessive-compulsive disorder (OCD) do not receive cognitive-behavioral therapy with exposure and response prevention, which is the most effective treatment for OCD. Therefore, Metacognitive Training for OCD (MCT-OCD) was developed, which is a structured group therapy aiming at the modification of dysfunctional (meta-)cognitive biases, beliefs and coping styles. It can be administered by less trained personnel, thus may reach a higher number of patients. An uncontrolled pilot study (MCT-OCD pilot version) provided first evidence that the training is highly accepted by patients; OC symptoms decreased with a high effect size (η2partial = 0.50). The aim of the present study is to address the shortcomings of the pilot study (e.g., no control group) and to assess the efficacy of the revised version of the MCT-OCD in the framework of a randomized controlled trial.

METHODS

Eighty patients with OCD will be recruited. After a blinded assessment at baseline (-t1), patients will be randomly assigned either to the intervention group (MCT-OCD; n = 40) or to a care as usual control group (n = 40). The MCT-OCD aims to enhance patients' metacognitive competence in eight modules by addressing dysfunctional (meta-)cognitive biases and beliefs associated with OCD (e.g., intolerance of uncertainty). After 8 weeks, patients will be invited to a post assessment (t1), and then they will receive a follow-up online questionnaire 3 months following t1 (t2). The primary outcome is the Y-BOCS total score, and the secondary outcomes include the HDRS, OCI-R, OBQ-44, MCQ-30, WHOQOL-BREF, BDI-II, and subjective appraisal ratings of the MCT-OCD. We expect that OC symptoms will decrease more in the intervention group compared with the care as usual control group from -t1 to t1 and that treatment gains will be maintained until t2.

DISCUSSION

The planned study is the first to investigate the MCT-OCD, a promising new treatment, in a randomized controlled trial. The MCT-OCD may help to overcome existing treatment barriers for patients with OCD.

TRIAL REGISTRATION

German Registry for Clinical Studies ( DRKS00013539 ), 22.02.2018.

Neuroticism and Religiosity: The Role of Obsessive Beliefs, Thought-Control Strategies and Guilt in Scrupulosity and Obsessive-Compulsive Symptoms Among Muslim Undergraduates

Neuroticism and religiosity are distal vulnerability factors for OCD phenomenon. The present study aimed to examine the roles of obsessive beliefs (OBs), thought-control strategies, and guilt in the relationship between these vulnerability factors and obsessive-compulsive symptoms (OCSs), specifically scrupulosity symptoms in a Muslim sample via SEM. The sample consisted of 273 university students who filled out a set of questionnaires. The results indicated that neuroticism and the degree of religiosity predict OBs that are positively associated with guilt and self-punishment both of which predict scrupulosity and other OCSs. Findings of the present study were discussed in the context of the related literature.

Obsessive compulsive disorder and thought action fusion: Relationships with eating disorder outcomes

Obsessive Compulsive Disorder (OCD) is among the most common psychiatric comorbidities with eating disorders (EDs) and most studies have only examined this relationship at a diagnostic level. More research is needed to determine whether specific symptom domains and cognitive patterns commonly observed in OCD are most salient among individuals with clinically significant EDs, and whether these symptoms appear to change and/or influence treatment outcomes. Thought Action Fusion (TAF) is one cognitive pattern that may underlie OCD-ED comorbidity. The current study assessed 112 adolescent and adult female patients at a residential ED treatment facility on levels of ED severity, OCD symptom severity, and TAF at pre- and post-treatment. All OCD symptom dimensions were positively correlated with ED severity at pretreatment, with Obsessing, Neutralizing and Ordering OCD symptoms being most elevated. TAF was also positively correlated with ED severity at pre-treatment, and higher levels of TAF at pretreatment significantly predicted greater ED severity at post-treatment after controlling for all other OCD symptoms. Improvements in TAF specific to thoughts about others also predicted improvements in ED severity after controlling for changes in OCD symptoms. Clinically, these results indicate that efforts targeting specific OCD symptom dimensions and TAF in addition to ED-focused treatment as usual may be beneficial for enhancing overall treatment outcomes.

Validity and clinical utility of the obsessive compulsive inventory - child version: further evaluation in clinical samples

BACKGROUND

Obsessive-compulsive disorder (OCD) is a clinically heterogeneous disorder. Currently, the Obsessive Compulsive Inventory-Child Version (OCI-CV) is the only self-report measure that fully captures this symptom heterogeneity in children and adolescents. The psychometric properties of the OCI-CV are promising but evaluations in large clinical samples are few. Further, no studies have examined whether the measure is valid in both younger and older children with OCD and whether scores on the measure are elevated in youths with OCD compared to youths with other mental disorders.

METHODS

To address these gaps in the literature, we investigated the psychometric properties and validity of a Swedish version of the OCI-CV in a large clinical sample of youth aged 6-18 years with OCD (n = 434), anxiety disorders (n = 84), and chronic tic disorders (n = 45).

RESULTS

Internal consistency coefficients at the total scale and subscale level were consistent with the English original and in the acceptable range. Confirmatory factor analyses revealed an adequate fit for the original six-factor structure in both younger and older children with OCD. Correlations between total scores on the OCI-CV and the Children's Yale-Brown Obsessive-Compulsive Scale (CY-BOCS) were small at pre-treatment (r = 0.19) but large at post-treatment (r = 0.62). Youth with OCD scored higher than those with anxiety and chronic tic disorders, and the OCI-CV was sensitive to symptom change for youth undergoing treatment for OCD.

CONCLUSIONS

This Swedish version of the OCI-CV appears to be a valid and reliable measure of the OCD symptom dimensions across age groups and has good clinical utility.

Stressful experiences affect the course of co-occurring obsessive-compulsive and psychotic symptoms: A focus on within-subject processes

OBJECTIVE

Obsessive-compulsive symptoms (OCS) frequently occur in patients with psychotic disorders and are associated with higher burden and poorer prognosis. This study prospectively investigated the effect of stressful experiences on the severity of OCS and co-occurring psychotic and affective symptoms, with a focus on within-subject processes.

METHOD

Monthly assessments over 6 months in patients with a psychotic disorder (n = 56) and unaffected siblings (n = 49) resulted in 309 and 277 observations, respectively. Linear mixed-effects models investigated the disaggregated effects of within-subject changes and between-subject differences in stressful events on OCS, positive, negative and depressive symptoms. Subsequently, moderating effects of coping strategies and dysfunctional metacognitive beliefs were assessed. Mediation analyses investigated direct and indirect effects of stressful events on OCS four weeks later.

RESULTS

Stressful experiences were associated with severity in almost all symptom domains on the between- and within-subject levels. Dysfunctional coping and metacognitive beliefs moderated these associations. Patients and siblings with a tendency for passive coping showed higher within-subject increase in depressive symptoms, whereas passive coping and dysfunctional beliefs moderated the association between stressful experiences and severity of positive symptoms and OCS on the between-subject level. Effects of stressful experiences on OCS four weeks later were partially mediated by depressive and positive symptoms in patients and siblings.

CONCLUSIONS

Findings suggest that severity and variability of co-occurring psychopathology can partly be explained by recent stressful events and the way individuals cope with these experiences. The implementation of coping-oriented interventions could possibly help to prevent development and/or aggravation of co-occurring symptom severity.