It is all in their mind: A review on information processing bias in lonely individuals

Mapping vulnerability factors of chronic emotional and social loneliness: A network analysis

BACKGROUND

Chronic loneliness adversely impacts both mental and physical health. As current interventions are only moderately effective, examining vulnerability factors reflected in interpersonal behavior and their relationships with specific chronic loneliness subtypes may provide insights. The present study explored the associations between loneliness vulnerability factors and two subtypes of chronic loneliness: chronic emotional loneliness (a longing for intimate connections) and chronic social loneliness (dissatisfaction with the quantity and quality of one's social network).

METHODS

The sample consisted of 294 university students who had recently started at a new university. Participants completed surveys across three time points, separated by three-month intervals, including questionnaires on emotional and social loneliness, adult attachment styles, interpersonal behavioral styles, and features of emotional disorders. To explore relationships, we used network analysis by estimating a Mixed Graphical Model (MGM), in which chronic emotional loneliness and chronic social loneliness were dichotomized as binary variables (absence versus presence), while vulnerability factors were treated as continuous variables.

RESULTS

The network analysis demonstrated that chronic loneliness subtypes were differentially linked to vulnerability factors. Chronic emotional loneliness was predominantly linked to features of emotional disorders, whereas chronic social loneliness demonstrated a negative conditional association with secure attachment style.

LIMITATIONS

The assessment of chronic loneliness was based on three time points, which does not capture potential fluctuations between assessments.

CONCLUSIONS

These findings highlight the importance of differentiating between chronic loneliness subtypes when examining vulnerability factors. By distinguishing these subtypes, tailored interventions for loneliness can be developed to enhance prevention.

Developing loneliness interventions for people with personality disorders: A call to action

Loneliness is common in personality disorders (PDs) and may contribute to their severity and persistence. Systematic research on loneliness interventions for PD is sparse but clearly needed. According to the Alternative Model of Personality Disorders, loneliness may be related to personality functioning and may link to domains of self (identity and self-direction) and interpersonal functioning (empathy and intimacy). A deeper understanding of the interaction between perceived loneliness and individual dysfunction across these domains is essential for establishing novel psychological interventions that effectively treat loneliness. As a first step in developing a valid therapy model, we suggest a modular framework that encompasses loneliness-associated perceptions, cognitions, feelings, and behaviors that can be targeted with specific strategies. To further develop this framework, additional empirical research, for example, clinical studies on loneliness-tailored interventions in PD, should be performed in parallel with more conceptual research that challenges and integrates current hypotheses and theories.

Loneliness and social conformity: A predictive processing perspective

For social creatures like humans, loneliness-which is characterized by a perceived lack of meaningful social relationships-can result in detrimental health outcomes, especially when experienced over an extended period of time. One potential way to pursue rewarding social connections could be social conformity, the tendency to align one's behavior and opinions to those of others. In this perspective article, we give a broad overview of common and distinct neural mechanisms underlying loneliness and social conformity, and the involvement of the oxytocinergic system therein. Additionally, we consider how loneliness can be understood within a predictive processing framework. Specifically, negative expectations could be related to altered representations of the self and others in the medial prefrontal cortex, whereas diminished bottom-up signals from the insula may contribute to reduced precision in the perception of the social environment. This negatively skewed internal model may perpetuate loneliness and lead to chronicity over time. While acute isolation and loneliness could drive people toward reconnection and increased social conformity, chronic loneliness may lead to distrust and avoidance, eventually resulting in nonconformity. We suggest different mediating mechanisms and moderating factors that warrant further investigation in future research.

Ambiguity potentiates effects of loneliness on feelings of rejection

For social species, having strong and high-quality social relationships is an important safety cue. Loneliness occurs when an individual perceives they have insufficient relationships resulting in feelings of lack of safety. States of perceived unsafety are linked to an increased tendency to construe ambiguous information - information lacking a unique clear interpretation - as threatening. Here, we explore whether the ambiguity of social cues of interpersonal rejection moderates effects of loneliness on feelings of rejection while undergoing social exclusion. Data were collected in 2021; 144 adults completed a progressive social exclusion paradigm where they were randomly assigned to be equally included, excluded, or over-included. Social exclusion/inclusion cues became more pronounced over the course of multiple rounds of a ball-tossing game (Cyberball) resulting in a scenario where ambiguity was highest in earlier rounds and decreased over time. Participants reported feelings of loneliness prior to the task and feelings of rejection throughout the task. Results demonstrated that higher loneliness predicted increased feelings of rejection regardless of exclusion condition. Notably, this positive relationship was strongest during earlier rounds when social cues were most ambiguous. These findings contribute to our understanding of how loneliness modulates social perception to enable organisms to adequately adapt to changing circumstances.

The lonely brain: Aligning theories of loneliness with data from neuroimaging studies

Although loneliness is an unpleasant subjective experience associated with negative consequences, decades of research suggest loneliness is accompanied by adaptive cognitive changes that promote self-preservation and attempts for social reconnection. This review summarizes theoretical accounts that elaborate how loneliness alters attention and social information processing, then reviews whether findings from functional magnetic resonance imaging (fMRI) studies align with these hypothesized effects. We first examined the hypothesis that loneliness should increase general attention to monitor for potential environmental threats. Findings from resting-state studies suggested that loneliness corresponds to greater baseline activity in attention-related regions. Next, we examined the hypothesis that loneliness heightens sensitivity to the social world to protect against social threats and motivate reconnection. Here, studies showed sensitivity toward negative social information increased, whereas sensitivity toward positive social information was stimulus dependent (e.g., strangers, close others). Finally, we examined the hypothesis that loneliness enhances mentalizing to better predict social situations. Although many studies support this hypothesis, the research here is limited. However, studies do find that lonely individuals show idiosyncratic processing of the self and others. To conclude, we lay out future directions addressing some shortcomings of current fMRI studies of loneliness, and provide additional avenues to expand our knowledge of the "lonely brain."

Loneliness - not for the faint of heart? Effects of transient loneliness induction on neural and parasympathetic responses to affective stimuli

While loneliness has been associated with altered neural activity in social brain networks and reduced heart rate variability (HRV) in response to social stressors, it is still unclear whether these are related or parallel effects. Thus, the current study aimed to examine the relationship between loneliness and neural and parasympathetic responses to social stimuli by using an experimental induction of momentary loneliness. Sixty-three participants (18-35 y.o.) received manipulated feedback about their future relationships to induce either loneliness (Future Alone, FA; n = 31) or feelings of belonging (Future Belong, FB, n = 32) and completed a functional magnetic resonance imaging session with concomitant HRV measurement during which affective pictures with social or nonsocial content were presented. In line with our previous research, decreased vagal flexibility and more negative affect were observed in participants subjected to the loneliness induction. Furthermore, even though no significant between-group differences in neural activity were observed, the neural response to negative social vs nonsocial stimuli in the temporoparietal junction was positively associated with the parasympathetic response, and this relationship was stronger in the FA group. Taken together, these results suggest that transient feelings of loneliness may disrupt adaptive responding to environmental demands and negatively impact brain-heart interactions.

Revisiting the cognitive and behavioral aspects of loneliness: Insights from different measurement approaches

Loneliness is increasingly recognized as a critical public health issue that profoundly affects psychological well-being and social functioning. This study evaluates cognitive and behavioral differences associated with different facets of loneliness. We classified 790 German-speaking adults (MAge = 31.86 (12.48), 81% female) as lonely or not lonely based on three dimensions - loneliness frequency, distress, and chronicity - and tested for group differences regarding cognitive and behavioral aspects, as proposed by the cognitive model of loneliness, while controlling for depressive and social anxiety symptoms. The results indicate fair to substantial agreement between the three classification methods. Further, we found significant group differences regarding all components, such as interpretation bias, social avoidance, and self-esteem, with each loneliness classification method. Our findings highlight the multifaceted nature of loneliness and underscore the importance of applying diverse methods to fully capture its complexity. This study contributes to a more nuanced understanding of loneliness and its implications, suggesting that interventions should consider the specific dimensions of loneliness to effectively address its cognitive and behavioral ramifications.

More envy, more loneliness? not only that: A longitudinal study and daily diary study

Although cross-sectional studies have explored the correlation between envy and loneliness, few longitudinal studies have investigated the bidirectional association between envy and loneliness at both trait and state levels. Here, through a longitudinal study and a daily diary investigation, we examined the interrelationships between envy and loneliness at both trait and state levels. In study 1, 288 college students answered the Dispositional Envy Scale (DES) and UCLA Loneliness Scale (UCL-8 Scale) twice with a one-year interval. The results of cross-lagged analysis indicated that dispositional envy could predict trait loneliness, while not vice versa. In study 2, using the adapted items form DES and UCL-8, a 14-day diary survey from a sample of 195 college students was conducted to investigate the interrelationship between state envy and state loneliness. The results of multivariate latent growth models and hierarchical linear models indicated that state envy could positively predict state loneliness and vice versa. Taken together, these findings uncover the bidirectional relationship between envy and loneliness at both the trait and state levels.

Can a One-Time Subtle Attachment Security Priming Impact Outcomes in the Real World?

Although research exists on the impact of security priming, the vast majority of studies have been conducted in the laboratory and used repeated prime/priming sessions. The studies described in this paper test whether attachment security priming impacts people's sense of security and related behaviors in the real world following a single exposure to a security prime. In the first two studies, participants were indirectly exposed to either security or control cues. In Study 1 (n = 53), exposure to security cues via posters near the entrance to the building where the study took place led to a higher sense of state security. In Study 2 (n~21,000), the same security primes (posters) led to a greater tendency to engage in helping behavior. In Study 3 (n = 200), exposure to similar security primes, embedded in a self-help guide, increased people's positive evaluations of the health guide, which is known to be related to higher adherence to treatment. The implications for day-to-day security, well-being, and health are discussed.

The Loneliness of the Odd One Out: How Deviations From Social Norms Can Help Explain Loneliness Across Cultures

Loneliness is an important health risk, which is why it is important to understand what can cause persistent or severe loneliness. Previous research has identified numerous personal or relational risk factors for loneliness. Cultural predictors, however, have been considered less. The new framework of norm deviations and loneliness (NoDeL) proposes that social norms, which are defining features of culture, can help explain loneliness within and across cultural contexts. Specifically, people who deviate from social norms are suggested to be at an increased risk for feeling lonely because they are more likely to experience alienation, inauthenticity, lower self-worth, social rejection, relationship dissatisfaction, and/or unfulfilled relational needs. Given that social norms vary by social, geographical, and temporal context, they can furthermore be considered cultural moderators between individual-level risk factors and loneliness: Personal or relational characteristics, such as shyness or being single, may increase the risk for loneliness particularly if they do not fit social norms in a specific environment. Integrating previous quantitative and qualitative findings, I hence offer a framework (NoDeL) to predict loneliness and cultural differences in risk factors for it. Thus, the NoDeL framework may help prepare culture-sensitive interventions against loneliness.

Addressing Cognitive Bias in Adolescents with Neurodevelopmental Disorders Using 3-D Animated Serious Games

OBJECTIVE

This study sought to evaluate the effectiveness of a serious game, that embeds cognitive bias modification for interpretation (CBM-I), in altering the negative interpretive bias of early aged adolescents diagnosed with Attention-Deficit/Hyperactivity Disorder, Autism Spectrum Disorder, and Specific Learning Disorders. The difficulties that adolescents with neurodevelopmental disorders (NDDs) experience navigating the social nuances of everyday environments make them prone to the cognitive biases that lead to the development of negative thought patterns. Directly tackling the biased interpretive processes that give rise to negative thinking may be effective in reducing negative bias and mental health problems.

METHOD

Minds Online, a 10-episode 3-D animated serious game that embeds CBM-I was introduced using a three-phase multiple baseline design in a school setting. Eight adolescents diagnosed with an NDD completed the 10 episodes.

RESULTS

Real-time data revealed that seven of the eight adolescents altered their negative interpretive bias to a benign bias. However, pre- and post-test standardized measures revealed non-significant changes in the desired direction for mental health. Visual analyses of 308 daily self-reported ratings about worry about schoolwork, worry about peer relationships, and feelings of loneliness did not demonstrate a replicated intervention effect. However, when these interrupted time series data were analyzed statistically, significant individual improvements were evident. Engagement with Minds Online was excellent, as was adherence to daily data collection.

CONCLUSIONS

Minds Online seems to be highly effective in altering the negative interpretive biases of adolescents with NDDs, which is promising because such cognitive biases are involved in the onset and maintenance of psychopathology.

How people think about being alone shapes their experience of loneliness

Loneliness is a widespread issue routinely targeted by the media and public health campaigns. We propose that these efforts, though well-intentioned, may exacerbate this problem by negatively influencing a potential driver of loneliness: people's beliefs about being alone. Supporting this thesis, we show that contemporary U.S. news articles are 10 times more likely to describe being alone as harmful than beneficial (Study 1, N = 144 articles) and that exposure to such articles causally impacts people's beliefs about being alone (Study 2, N = 456). Further, a 2-week experience-sampling study (Study 3, N = 161) demonstrates that people with negative beliefs about being alone experience a steep increase in loneliness after spending time alone in daily life, whereas those with positive beliefs feel less lonely after spending time alone. Finally, multi-national studies demonstrate the generalizability of these results across nine countries spanning six continents (Studies 4 and 5, N = 2930). Together, these findings reveal the critical role of beliefs about being alone in shaping loneliness.

Blind spots in health perception: the underestimated role of social connection for health outcomes

BACKGROUND

Robust evidence indicates that having few or poor-quality social connections is associated with poorer physical health outcomes and risk for earlier death (Snyder-Mackler N, Science 368, 2020; Vila J, Front Psychol 12:717164, 2021).

AIM

This study sought to determine whether recent attention on social connection and loneliness brought on by the COVID-19 pandemic may influence risk perception and whether these perceptions were heightened among those who are lonely.

METHODS

Two waves of online survey data were collected. The first included data from 1,486 English-speaking respondents in the US, UK, and Australia, and a second sample of 999 nationally representative US adults, with a final sample of 2392 respondents from the US and UK.

RESULTS

Perceptions of risk have remained consistent, underestimating the influence of social factors on health outcomes and longevity, even among respondents who reported moderate-to-severe levels of loneliness.

CONCLUSIONS

Despite heightened awareness and discourse during the COVID-19 pandemic, public perception in the US and UK continues to significantly underestimate the impact of social factors on physical health and mortality. This underestimation persists regardless of individual loneliness levels, underscoring the need for enhanced public education and policy efforts to recognize social connection as a crucial determinant of health outcomes.

Content Specificity of Interpretation Bias Related to Social and Emotional Loneliness in Emerging Adulthood

According to cognitive theories, loneliness is associated with biased cognitive processes. However, studies investigating interpretation bias (IB) related to feelings of loneliness are scarce. The current study aimed to investigate (a) whether emotional loneliness (perceived absence of intimacy) and social loneliness (perceived absence of satisfying connections) are associated with a negative IB while controlling for related psychosocial symptoms, and (b) whether these two types of loneliness show content-specific IB. Sample 1 included an unselected university sample (N = 138, 81.9% female, M = 20.8 years, SD = 4.4), and Sample 2 utilized a preselected university sample with elevated anxiety/depression levels (N = 315, 69.5% female, M = 23.8 years, SD = 4.3). Participants completed questionnaires on emotional and social loneliness, social isolation, social anxiety, depression, hostility, and an ambiguous scenarios task measuring IB. The results showed that emotional and social loneliness were uniquely associated with a negative IB related to the unavailability of social network. Social loneliness was additionally positively related to an IB for rejection and negatively to an IB for hostility in Sample 2. These results provide evidence for a content-specific negative IB in both types of loneliness. Future studies are needed to replicate these findings as it could aid in developing an effective treatment program for loneliness targeting underlying cognitions in young adults.

Wisdom and socio-cognitive mindfulness as predictors of loneliness in late adulthood: the mediating role of meaning in life

OBJECTIVES

This research aimed to examine whether (1) socio-cognitive mindfulness, defined as actively noticing novel distinctions in events and situations, negatively predicted loneliness in older adults and whether (2) meaning in life mediated the relationships between wisdom and loneliness and between socio-cognitive mindfulness and loneliness.

METHOD

Two cross-sectional studies were conducted. In Study 1 (N = 76), participants aged 60 to 85 years completed questionnaires measuring wisdom, loneliness, meaning in life, and self-rated health. In Study 2 (N = 117), care home residents aged 60 to 87 years completed measures of socio-cognitive mindfulness, loneliness, meaning in life, and self-rated health.

RESULTS

Study 1 found a negative relationship between wisdom and loneliness, even after accounting for socio-demographic factors and meaning in life. Study 2 revealed a negative relationship between socio-cognitive mindfulness and loneliness. The relationships of both wisdom and socio-cognitive mindfulness to loneliness were mediated by meaning in life.

CONCLUSION

The two studies indicate that attributes associated with wisdom and socio-cognitive mindfulness, such as perceiving events from multiple perspectives and maintaining a compassionate attitude, contribute to an increase in meaning in life, which in turn reduces loneliness in late adulthood.

Investigating trajectories linking social cognitive capacity, bias, and social isolation using computational modeling

Despite theoretical emphasis on loneliness affecting social information processing, empirical studies lack consensus. We previously adopted a clinical science framework to measure the association between social cognitive capacity and bias and both objective and perceived social isolation in nonclinical participants. Our prior study found that while objective social isolation is linked to both social cognitive capacity and social cognitive bias, loneliness is associated only with the latter. This study extended our previous model using a computational approach to capture implicit cognitive processes. We replicated and extended our earlier findings with a new sample of 271 participants, using neuropsychological tasks and a dot-probe paradigm that was analyzed via Drift Diffusion Model. We presented two complementary trajectories of how social cognitive bias may arise: the increased propensity to engage with salient social stimuli or a decreased information processing capacity dependent on the presence or absence of potential social threats. Furthermore, we found evidence that loneliness is associated with the time needed for perceptual processing of stimuli, both directly and indirectly, via social cognitive bias. Taken together, the complex and context-dependent nature of information processing biases observed in the current study suggests that complex and multifaceted interventions should be implemented to counter social information processing biases in lonely individuals.

Loneliness and socioemotional memory

Do chronically high-lonely individuals exhibit specific memory biases when recalling past social episodes? We explored negative memory biases, focusing on the recall of unfavourable social experiences and social memory biases, emphasizing the recall of social experiences irrespective of emotional valence. We conducted a dictionary-based semantic analysis of autobiographical episodes obtained from 4095 participants via four datasets. Participants recalled a positive, negative or emotionally neutral episode from their recent past. High-lonely individuals predominantly exhibited a decline in recalling positive social episodes, providing partial support for negative memory biases. However, both high- and low-lonely individuals were similarly inclined to recall negative social episodes. These results suggest that the primary issue among high-lonely individuals is the limited recall of positive social experiences rather than the general negativity in memory biases or the hypersensitivity to general social memories.

Kindness Is the Language That the Deaf Can Hear and the Blind Can See: Kindness, Theory of Mind and Well-Being in Adolescents

BACKGROUND/OBJECTIVES

This mixed-methods, cross-sectional study explored adolescent understandings of kindness, and interconnections amongst Theory of Mind (ToM; ability to attribute mental states to oneself and others), kindness, compassion, and social-psychological well-being components in 318 participants aged 10-18 (Mage = 14.58, SD = 2.31).

METHODS

Participants completed a battery of self-report measures and wrote responses to open-ended questions about kindness in different relational and situational contexts.

RESULTS

Most adolescents gave other-oriented, psychological definitions of kindness, increasing in detail with age. Content analysis revealed main themes of helping, followed by proactive support and respect, and differed according to the identity of the recipient (stranger, self, others), and situational context (home, school). Results showed significant positive correlations between perceptions of kindness and social (but not psychological) well-being, with gender and age differences. High levels of ToM related to high levels of perceived compassion and kindness for others, and the relations strengthened with age.

CONCLUSIONS

The results highlight implications for future research on adolescents' perceptions of prosociality, and kindness-based mental health interventions that promote social cognition and prosocial acts.

Lonely and Self-Centered? A Meta-Analysis of the Link Between Prosociality and Loneliness

While loneliness may motivate individuals to approach others, it may simultaneously increase their focus on self-preservation, resulting in egocentric behavior. Since the evidence linking loneliness and prosociality is inconclusive, the current meta-analysis aims to explore this relationship. Through a systematic search of databases, we identified 35 studies involving 44,764 participants. A small effect size for a negative correlation between loneliness and prosociality (r = -0.12, 95% CI: [-0.19, -0.05]) was found using the random effects model. The effect was not moderated by participants' sociodemographic characteristics or the WEIRDness of the sample but differed between types of measurement and forms of prosocial behavior. Our findings highlight the importance of understanding the processes perpetuating the link between loneliness and decreased prosociality, as this tendency may pose difficulties in restoring social connections, cooperating with others, or aiming for common goals.

Loneliness and psychotic-like experiences in middle-aged and older adults: the mediating role of selective attention to threat and external attribution biases

OBJECTIVES

Loneliness has been associated with psychotic-like experiences (PLEs) in the general population, but the mechanisms underlying this association are poorly understood. Theoretical models, corroborated by empirical findings, signify the key role of biased cognition in both loneliness and psychosis. This study tested whether two cognitive biases - Selective Attention to Threat (ATB) and External Attribution Bias (EAB) - account for the association between loneliness and PLEs.

METHOD

A convenience sample (n = 357) of middle-aged and older adults (aged 40+) was recruited online from the UK population. The parallel mediation model with two the aforementioned cognitive biases as mediators was tested.

RESULTS

A mediation effect between loneliness and PLEs via ATB (ab1 = 0.441, 95% CI = [0.264, 0.646]) and EAB (ab2 = 0.354, 95% CI [0.124, 0.627] was established. This model remained significant after controlling for the current symptoms of anxiety and depression.

CONCLUSION

Greater loneliness was associated with a higher rate of PLEs in the sample of middle-aged and older adults. This association was fully explained by ATB and EAB, independent of the current symptoms of anxiety and depression.

From childhood emotional abuse to adolescent loneliness: The roles of self-compassion and rejection sensitivity

BACKGROUND

Emotional abuse is one of the important risk factors for adolescent loneliness. However, there is a shortage of information regarding protective factors and potential mediating mechanisms between emotional abuse and adolescent loneliness, which require further investigation.

OBJECTIVES

The present study explored the chain mediating role of self-compassion and rejection sensitivity on the pathway from childhood emotional abuse to adolescent loneliness, based on attachment theory and a stress process model.

PARTICIPANTS AND SETTING

Five hundred sixty-seven Chinese adolescents aged 12 to 17 years participated in this study.

METHODS

An online questionnaire was utilized to assess a variety of variables including childhood emotional abuse, physical abuse, sexual abuse, self-compassion, rejection sensitivity, and loneliness. To increase the validity of the results, physical and sexual abuse were included as covariates since emotional abuse may co-occur with these types of abuse.

RESULTS

Emotional abuse in childhood is significantly positively correlated with adolescent loneliness. Emotional abuse in childhood can affect adolescent loneliness not only directly, but also indirectly through self-compassion (including its components of self-warmth and self-coldness) and rejection sensitivity.

CONCLUSIONS

This study sheds further light on the chain mediating role of self-compassion and rejection sensitivity in the relationship between emotional abuse in childhood and loneliness in adolescence, suggesting that intervention programs targeting increased self-compassion and decreased rejection sensitivity may be effective to reduce loneliness in adolescents.

[Internet-based self-help for loneliness-a systematic review]

BACKGROUND

Recently, the phenomenon of loneliness has received increasing attention. Loneliness is widespread and can have adverse consequences for mental and physical health if prolonged. Internet-based interventions (IBIs) for self-help have proven to be effective for a variety of psychological disorders. Due to several specific aspects, IBIs are also a relevant option for loneliness. This systematic review aims to present the current research on self-help IBIs for reducing loneliness.

METHODS

A systematic literature search was conducted in the databases Web of Science, PubMed, Scopus, PsycInfo, MedLine, PsycIndex, Cochrane Library and PsyArXiv between December 2023 and early January 2024. We included original German or English studies that addressed IBIs for self-help to reduce loneliness.

RESULTS

In total, eight studies published between 2017 and 2024 were included in the qualitative analysis. All studies were conducted in high-income countries, included predominantly well-educated female adults and were mostly satisfactory regarding their internal validity.

DISCUSSION

The results of this review suggest that self-help IBIs may be a promising option for alleviating loneliness. However, the work also points to the need for further research. Future studies should consider larger samples and people of different ages, genders and education levels in order to generalise the results of the present review.

The association between perceived social functioning and heart rate variability is mediated by subclinical depressive symptomatology and moderated by gender

Chronic loneliness and low perceived social support have been recognized as risk factors for both mental and cardiovascular disorders. It has been proposed that their link to psychophysiological problems may involve changes in parasympathetic activity. However, the exact underlying psychopathological mechanisms and the moderating effects of gender are still not thoroughly examined. Thus, the present study investigated associations between perceived social functioning and resting vagal tone in the context of potential cognitive and subclinical mediators and gender differences. Three hundred twenty-five young adults (aged 18-35, 180 women) underwent an electrocardiogram measurement of 6-minute resting heart rate variability (HRV). They also completed questionnaires assessing loneliness, perceived social support, social cognitive biases, depressive and social anxiety symptoms, and general mental health. In men, HRV was significantly and negatively associated with poorer perceived social functioning, depressive symptoms, and self-reported social cognitive biases, while in women, there was a quadratic link between HRV and depressive symptoms and HRV and general mental health. Moderated mediation analysis revealed that depressive symptoms fully mediated the relationship between perceived social functioning and HRV in men. The results suggest that decreased resting vagal tone in lonely individuals is linked to depressive symptomatology rather than to specific social cognitive biases and that this association is significant only in men.

The impact of psychosocial adversity on brain and behaviour: an overview of existing knowledge and directions for future research

Environmental experiences play a critical role in shaping the structure and function of the brain. Its plasticity in response to different external stimuli has been the focus of research efforts for decades. In this review, we explore the effects of adversity on brain's structure and function and its implications for brain development, adaptation, and the emergence of mental health disorders. We are focusing on adverse events that emerge from the immediate surroundings of an individual, i.e., microenvironment. They include childhood maltreatment, peer victimisation, social isolation, affective loss, domestic conflict, and poverty. We also take into consideration exposure to environmental toxins. Converging evidence suggests that different types of adversity may share common underlying mechanisms while also exhibiting unique pathways. However, they are often studied in isolation, limiting our understanding of their combined effects and the interconnected nature of their impact. The integration of large, deep-phenotyping datasets and collaborative efforts can provide sufficient power to analyse high dimensional environmental profiles and advance the systematic mapping of neuronal mechanisms. This review provides a background for future research, highlighting the importance of understanding the cumulative impact of various adversities, through data-driven approaches and integrative multimodal analysis techniques.

Let me in: The neural correlates of inclusion motivation in loneliness

BACKGROUND

While it is well-established that humans possess an innate need for social belonging, the neural mechanisms underlying motivation for connection are still largely unknown. We propose that inclusion motivation - measured through the effort that individuals are willing to invest to be included in social interactions - may serve as one of the basic building blocks of social behavior and may change in lonely individuals.

METHODS

Following the screening of 303 participants, we scanned 30 low- and 28 high-loneliness individuals with functional magnetic resonance imaging while they performed the Active Inclusion Task (AIT). The AIT assesses the participants' levels of effort invested in influencing their inclusion during classic Cyberball conditions of fair play and exclusion.

RESULTS

High- compared to low-loneliness individuals showed higher urgency for inclusion, specifically during fair play, which correlated with higher activity in the right thalamus. Furthermore, in high-loneliness individuals, we found increased functional connectivity between the thalamus and the temporoparietal junction, putamen, and insula.

LIMITATIONS

Participants interacted with computerized avatars, reducing ecological validity. Additionally, although increasing inclusion in the task required action, the physical demand was not high. Additional limitations are discussed.

CONCLUSIONS

Inclusion motivation in loneliness is heightened during fair but not exclusionary interactions, and is linked to activity in brain regions implicated in appetitive behavior and social cognition. The findings indicate that lonely individuals may view threat in inclusionary interactions, prompting them to take action to regain connection. This suggests that inclusion motivation may help explain social difficulties in loneliness.

Associations of state and chronic loneliness with interpretation bias: The role of internalizing symptoms

Loneliness is common and, while generally transient, persists in up to 22% of the population. The rising prevalence and adverse impacts of chronic loneliness highlight the need to understand its underlying mechanisms. Evolutionary models of loneliness suggest that chronically lonely individuals demonstrate negative interpretation biases towards social information. It may also be that such biases are exacerbated by momentary increases in state loneliness, or elevated anxiety or depression. Yet, little research has tested these possibilities. The current study aimed to advance understandings of loneliness by examining associations of chronic loneliness with individual differences in negative interpretation bias for social (relative to non-social) stimuli, and testing whether these associations change in the context of increased state loneliness and current levels of anxiety and depressive symptoms. These aims were explored in 591 participants who completed an interpretation bias task before and after undergoing a state loneliness induction. Participants also self-reported chronic loneliness, anxiety, and depression. Linear mixed models indicated that only state (but not chronic) loneliness was associated with more positive interpretations of non-social stimuli, with greater anxiety and depressive symptoms predicting more negative interpretations. Implications of these findings for present theoretical models of loneliness are discussed.

Childhood maltreatment is linked to larger preferred interpersonal distances towards friends and strangers across the globe

Childhood maltreatment (CM) is thought to be associated with altered responses to social stimuli and interpersonal signals. However, limited evidence exists that CM is linked to larger comfortable interpersonal distance (CID) - the physical distance humans prefer towards others during social interactions. However, no previous study has investigated this association in a comprehensive sample, yielding sufficient statistical power. Moreover, preliminary findings are limited to the European region. Finally, it is unclear how CM affects CID towards different interaction partners, and whether CID is linked to social functioning and attachment. To address these outstanding issues, adults (N = 2986) from diverse cultures and socio-economic strata completed a reaction time task measuring CID towards an approaching stranger and friend. Higher CM was linked to a larger CID towards both friends and strangers. Moreover, insecure attachment and less social support were associated with larger CID. These findings demonstrate for the first time that CM affects CID across countries and cultures, highlighting the robustness of this association.

Loneliness and brain rhythmic activity in resting state: an exploratory report

Recent studies using resting-state functional magnetic resonance imaging have shown that loneliness is associated with altered blood oxygenation in several brain regions. However, the relationship between loneliness and changes in neuronal rhythm activity in the brain remains unclear. To evaluate brain rhythm, we conducted an exploratory resting-state electroencephalogram (EEG) study of loneliness. We recorded resting-state EEG signals from 139 participants (94 women; mean age = 19.96 years) and analyzed power spectrum density (PSD) and functional connectivity (FC) in both the electrode and source spaces. The PSD analysis revealed significant correlations between loneliness scores and decreased beta-band powers, which may indicate negative emotion, attention, reward, and/or sensorimotor processing. The FC analysis revealed a trend of alpha-band FC associated with individuals' loneliness scores. These findings provide new insights into the neural basis of loneliness, which will facilitate the development of neurobiologically informed interventions for loneliness.

Why So Lonely? The Direct and Indirect Associations between Developmental Trajectories of Fear of Negative Evaluation, Prosocial Behavior and Loneliness in Adolescence

Fear of negative evaluation and prosocial behavior have been identified as predictive factors influencing the development of loneliness in adolescence, representing typical factors in the cognitive and behavioral processes of re-affiliation. The elucidation of plausible direct and indirect pathways linking these pivotal factors to adolescents' loneliness need further exploration. This study aimed to investigate the direct and indirect relationships between the fear of negative evaluation, prosocial behavior, and adolescents' loneliness through the lens of developmental changes. A total of 533 adolescents (49.0% girls, Mage = 15.18 years, SD = 0.71) participated in this longitudinal study, assessed at three timepoints over a span of two years with 12-month intervals. Latent growth modeling uncovered direct associations between the developmental trajectories of both fear of negative evaluation and prosocial behavior with the developmental trajectory of adolescents' loneliness. The developmental trajectory of fear of negative evaluation exhibited an indirect association with the developmental trajectory of loneliness through the mediating role of prosocial behavior. These findings highlighted the roles of cognitive and behavioral re-affiliation processes, both independently and as mediators, in influencing adolescent loneliness, suggesting that interventions aimed at reducing fear of negative evaluation and promoting prosocial behavior could effectively mitigate adolescents' loneliness.

The longitudinal relationship between loneliness and both social anxiety and mobile phone addiction among rural left-behind children: A cross-lagged panel analysis

INTRODUCTION

Left-behind children are a special group that needs urgent attention. Due to enduring separation from their parents, loneliness is considered the most common and prevalent developmental hurdle in the experiences of left-behind children. This longitudinal cross-lagged study examined the direction of the association between loneliness and both internalizing and externalizing symptoms, with considering gender and left-behind status differences.

METHODS

A total of 1175 rural Chinese children (48.3% boys, 39.9% left-behind children, Mage = 14.54 ± 1.18 at baseline) completed self-reported loneliness, social anxiety, and mobile phone addiction at two-time points with 6 months intervals. Descriptive statistics, cross-lagged panel analysis, and multiple group analysis were estimated in the present study.

RESULTS

Loneliness exacerbated social anxiety and mobile phone addiction, and vice versa. In addition, gender and left-behind status moderated these relationships, with boys more likely to be mobile phone addicted due to loneliness and girls more likely to be lonely due to mobile phone addiction. More importantly, left-behind children with loneliness are more prone to social anxiety and mobile phone addiction, and vice versa, compared with non-left-behind children.

CONCLUSIONS

The targeted interventions should be carried out for different genders and left-behind statuses. Particularly for left-behind children, neglecting to address both the symptoms of loneliness and both social anxiety and mobile phone addiction could significantly undermine the efficacy of intervention programs that solely target either one of these afflictions.

Age and Gender Identity in the Relationship Between Minority Stress and Loneliness: A Global Sample of Sexual and Gender Minority Adults

Loneliness is prevalent among sexual minority adults and is associated with minority stress. Yet there is limited understanding of how loneliness and minority stress vary across key demographic variables. This cross-sectional study explored age and gender differences in a minority stress model linking sexual orientation marginalization to social and emotional loneliness via proximal stress (internalized homonegativity, concealment, and stigma preoccupation) and via social anxiety and inhibition. The study also assessed age and gender differences in the protective influence of LGBTQ community involvement. 7,856 sexual minority adults from 85 countries completed an online survey. They were categorized as emerging adults (18-24, n = 3,056), young adults (25-34, n = 2,193), midlife adults (35-49, n = 1,243), and older adults (50-88, n = 1,364). Gender identity groups were cisgender men (n = 4,073), cisgender women (n = 3,017), and transgender individuals (n = 766). With each successive age group, there was a lower prevalence of sexual orientation marginalization, proximal stress, social anxiety, inhibition, and emotional loneliness, along with more community involvement. Sexual orientation marginalization was more pronounced among cisgender women and, especially, transgender individuals. The latter also exhibited the most social anxiety, inhibition, loneliness, and community involvement. Proximal stress was more prevalent among cisgender men than cisgender women and transgender individuals. Multiple group structural equation modeling supported the applicability of the loneliness model across age and gender groups, with only a few variations; these mainly related to how strongly community involvement was linked to marginalization, internalized homonegativity, and social loneliness.

Understanding the link between theory of mind and loneliness among primary school students: A cross-lagged panel model analysis

This study aimed to investigate the longitudinal association between theory of mind (ToM) and loneliness as well as the potential moderating effects of parenting style on this association. A total of 689 Chinese third-grade students (341 girls and 348 boys; Mage = 9.23 years, SD = 0.66) were recruited from eight primary schools and were followed from Grade 3 to Grade 5. These students reported their primary caregivers' parenting style in third grade and completed the same ToM task and loneliness questionnaire at each time point from Grade 3 to Grade 5. The study's results indicated a bidirectional relationship between ToM and loneliness, implying that children with less developed ToM abilities tend to feel lonelier and, conversely, that higher levels of loneliness are associated with lower ToM skills. Moreover, the study demonstrated that parenting style influenced the association between ToM and loneliness. Specifically, the impact of ToM at Grade 3 on reducing loneliness at Grade 4 was greater among children who experienced high levels of rejection from their caregivers compared with those with low levels of rejection. In addition, this study found that loneliness at Grade 3 had a greater influence on ToM at Grade 5 for children experiencing low levels of emotional warmth from their caregivers than for those who experienced high levels of emotional warmth. These findings highlight the significance of ToM as both a precursor and consequence of children's loneliness and emphasize the variation in these longitudinal relationships based on the parenting styles of primary caregivers.

Associations between social engagement, internalizing symptoms, and delusional ideation in the general population

BACKGROUND

Delusions are a hallmark feature of psychotic disorders and lead to significant clinical and functional impairment. Internalizing symptoms-such as symptoms of depression, anxiety, and trauma exposure-are commonly cited to be related to delusions and delusional ideation and are often associated with deficits in social functioning. While emerging studies are investigating the impact of low social engagement on psychotic-like experiences, little work has examined the relationship between social engagement, internalizing symptoms, and delusional ideation, specifically.

METHODS

Using general population data from the Nathan Kline Institute-Rockland (NKI-Rockland) database (N = 526), we examined the relationships between self-reported delusional ideation, internalizing symptoms, and social engagement and tested four indirect effect models to understand how these factors interrelate.

RESULTS

Delusional ideation was significantly associated with both increased internalizing symptoms (r = 0.41, p < 0.001) and lower social engagement (r = - 0.14, p = 0.001). Within aspects of social engagement, perceived emotional support showed the strongest relationship with delusional ideation (r = - 0.17, p < 0.001). Lower social engagement was also significantly associated with increased internalizing symptoms (r = - 0.29, p < 0.001). Cross-sectional models suggest that internalizing symptoms have a significant indirect effect on the association between delusional ideation and social engagement.

CONCLUSIONS

These findings reveal that elevated delusional ideation in the general population is associated with lower social engagement. Elevated internalizing symptoms appear to play a critical role in reducing engagement, possibly exacerbating delusional thinking. Future work should examine the causal and temporal relationships between these factors.

A longitudinal study of loneliness in autism and other neurodevelopmental disabilities: Coping with loneliness from childhood through adulthood

LAY ABSTRACT

We know that many autistic people feel lonely, but we don't know whether their loneliness changes over time. Our research study followed autistic people and people with other non-spectrum neurodevelopmental disabilities from childhood through young adulthood and asked them about their loneliness. While many people told us they felt lonely or very lonely, a sizable group also told us that they do not feel lonely. We found that people who reported feeling lonely earlier in life were likely to also report feeling lonely later in life. Overall, autistic people and people with other neurodevelopmental disabilities in our study became lonelier from adolescence to adulthood. People described multiple ways they cope with feeling lonely, such as distracting themselves or reaching out to connect with another person. People who used distraction tended to be lonelier than those who did not. Our findings tell us that there is a need for greater support of social connections for many autistic people as they become adults.

Changes of Solitude Behaviors among College Students: A Latent Transition Analysis

Solitude behaviors encompass four types: positive solitude, eccentricity, social avoidance, and loneliness. These four types of solitude behaviors are not entirely independent but can co-occur within individuals. Thus, the purpose of this study was to explore latent classes of solitude behaviors, their developmental patterns, and relevant influencing factors among college students. The Solitude Behavior Scale-Short Version was administered to a sample of college students. A total of 417 Chinese students completed a three-time longitudinal paper questionnaire. The data analysis was performed using Mplus 8.0 and SPSS 26.0. Harman's single-factor test, latent class analysis (LCA), and latent transition analysis (LTA) were employed for subsequent analysis. The results revealed three classes: low solitude, moderate solitude, and high solitude, which exhibited temporal changes. Social avoidance and loneliness could facilitate transitions between high solitude and moderate solitude. Females and first-grade students exhibited higher transition probabilities than males and students not in the first grade. The incidence of moderate solitude in the not-first-grade group was significantly higher than that in the first-grade group. Finally, this study offers new insights into the dynamics of solitude behaviors and their association with gender and age.

Threatened by others or by everything? The effects of momentary and trait loneliness on daily appraisals of social company and being alone in young adults

Theoretical accounts of loneliness suggest that it may lead to psychopathological consequences by increasing the perception of social threat. However, it is unclear whether the real-life effects of both trait and state loneliness are specific to social situations. To answer this question, two experience sampling studies were conducted with prestratified samples of young adults (18-35) with moderate (Study 1, N = 64) or low and high (Study 2, N = 103) levels of loneliness. Participants were asked to report their emotional states and appraisals of social and nonsocial situations. Multilevel modelling of momentary and time-lagged associations revealed that trait loneliness was associated with less positive (Study 1) and more negative (Study 2) company appraisals. Importantly, in Study 2, trait loneliness was also related to less positive and more negative appraisals of being alone. Momentary loneliness was related to less positive and more negative appraisals of both types and predicted negative social appraisals over time in both studies. In Study 2, time-lagged interaction effects on social appraisals were found between the two levels. The results suggest that in highly lonely individuals, both levels of loneliness may lead to a general negativity bias and have a synergistic effect.

Predictors and moderators of outcome of ICBT for loneliness with guidance or automated messages - A secondary analysis of a randomized controlled trial

Internet-based cognitive behavioral therapy (ICBT) is promising in alleviating loneliness in adults. Identifying individuals who benefit from ICBT for loneliness is pivotal to offering this intervention in a more targeted way and improving the intervention for those who do not benefit. This secondary analysis of a randomized controlled trial (RCT) aimed to identify predictors and moderators of outcome of an ICBT with guidance or automated messages for loneliness. In the RCT, 243 participants suffering from loneliness were randomly assigned to an ICBT with guidance (n = 98), automated messages (n = 97), or a waitlist-control condition (n = 48). In total, 180 participants completed the post-assessment (i.e., 10 weeks post-randomization). Outcomes were treatment outcome assessed with the UCLA-9 Loneliness Scale at post-assessment and treatment response, i.e., reliable improvement on the UCLA-9 from pre- to post. The relationship between a wide range of patient characteristics (grouped into socio-demographic, clinical, loneliness-specific, and treatment-related variables) and outcome was analyzed using multiple linear and logistic regressions. Feeling less burdened by loneliness resulted in higher odds of reliable improvement in guided ICBT compared to the waitlist-control condition. No treatment outcome or response moderators were identified for ICBT with automated messages compared to the waitlist-control group. Across active intervention groups, loneliness at baseline, age and fit between the tasks and goals of the intervention and participants' need predicted treatment outcome. Predictors of treatment response for ICBT with guidance and automated messages were not identified, and no variables differentially predicted the effects of ICBT with guidance or automated messages on the outcomes. In conclusion, individuals less burdened by their feelings of loneliness benefited more from guided ICBT. Lower baseline loneliness scores, younger age, and a better match between tasks and goals of the intervention and participants' needs also predicted a more favorable treatment outcome for both ICBT with guidance and automated messages.

The socioeconomic consequences of loneliness: Evidence from a nationally representative longitudinal study of young adults

The negative health consequences of loneliness have led to increasing concern about the economic cost of loneliness in recent years. Loneliness may also incur an economic burden more directly, by impacting socioeconomic position. Much of the research to date has focused on employment status which may not fully capture socioeconomic position and has relied on cross-sectional data, leaving questions around the robustness of the association and reverse causation. The present study used longitudinal data to test prospective associations between loneliness and multiple indicators of social position in young adulthood, specifically, whether participants who were lonelier at age 12 were more likely to be out of employment, education and training (NEET) and lower on employability and subjective social status as young adults. The data were drawn from the Environmental Risk (E-Risk) Longitudinal Twin Study, a birth cohort of 2,232 individuals born in England and Wales during 1994-1995. Loneliness and subjective social status were measured at ages 12, 18 and 26. Employability and NEET status were assessed at age 18. Findings indicate that greater loneliness at age 12 was prospectively associated with reduced employability and lower social status in young adulthood. The association between loneliness and lower social status in young adulthood was robust when controlling for a range of confounders using a sibling-control design. Results also indicate that loneliness is unidirectionally associated with reduced subjective social status across adolescence and young adulthood. Overall, our findings suggest that loneliness may have direct costs to the economy resulting from reduced employability and social position, underlining the importance of addressing loneliness early in life.

Profiles of Loneliness and Ostracism During Adolescence: Consequences, Antecedents, and Protective Factors

This longitudinal study (N = 1078, 46% boys; 54% girls) examined profiles of loneliness and ostracism during adolescence and their consequences and antecedents. Longitudinal latent profiles analyses identified four distinct profiles: (1) High emotional loneliness (25%), High and increasing social loneliness (15%), High peer exclusion and high social impact (9%) and No peer problems (51%). Subsequent internalizing problems were typical for the High and increasing social loneliness profile and externalizing problems for the High emotional loneliness and High peer exclusion and high social impact profiles. Furthermore, effortful control, prosocial skills, and relationship quality with parents and teachers were highest in the No peer problems profile, whereas the High and increasing social loneliness profile had the lowest self-esteem and was characterized by low surgency/extraversion, high affiliativeness, and high negative affectivity.

Loneliness is associated with mentalizing and emotion recognition abilities in schizophrenia, but only in a cluster of patients with social cognitive deficits

OBJECTIVE

Loneliness is a concern for patients with schizophrenia. However, the correlates of loneliness in patients with schizophrenia are unclear; thus, the aim of the study is to investigate neuro- and social cognitive mechanisms associated with loneliness in individuals with schizophrenia.

METHOD

Data from clinical, neurocognitive, and social cognitive assessments were pooled from two cross-national samples (Poland/USA) to examine potential predictors of loneliness in 147 patients with schizophrenia and 103 healthy controls overall. Furthermore, the relationship between social cognition and loneliness was explored in clusters of patients with schizophrenia differing in social cognitive capacity.

RESULTS

Patients reported higher levels of loneliness than healthy controls. Loneliness was linked to increased negative and affective symptoms in patients. A negative association between loneliness and mentalizing and emotion recognition abilities was found in the patients with social-cognitive impairments, but not in those who performed at normative levels.

CONCLUSIONS

We have elucidated a novel mechanism which may explain previous inconsistent findings regarding the correlates of loneliness in individuals with schizophrenia.

Heterogeneity in the trajectories of psychological distress among late adolescents during the COVID-19 pandemic

Background

The coronavirus disease 2019 (COVID-19) pandemic has constrained opportunities in social, educational and professional domains, leading to developmental challenges for adolescents initiating their transition to adulthood. Meta-analysis indicated that there was a small increase in psychological distress during the first year of the COVID-19 pandemic. However, significant heterogeneity in the psychological response to the COVID-19 pandemic was noted. Developmental antecedents as well as social processes may account for such heterogeneity. The goal of this study was to characterize trajectories of psychological distress in late adolescence during the COVID-19 pandemic.

Methods

5014 late adolescents born between 2000 and 2002 from the UK Millennium Cohort Study completed online self-reported assessments at three occasions during the first year of the COVID-19 pandemic (May 2020, September/October 2020 and February/March 2021). These surveys assessed psychological distress, loneliness, social support, family conflict, as well as other pandemic stressors. Information on developmental antecedents were obtained when cohort members were 17 years of age.

Results

Four distinct trajectories class were identified. Normative class (52.13%) experienced low and decreasing levels of psychological distress, while moderately increasing class (31.84%) experienced a small, but significant increase in distress over time and increasing class (8.75%) exhibited a larger increase in distress after the first wave of the pandemic. Inverted U-shaped class (7.29%) experienced elevated psychological distress during the first wave of the pandemic, followed by a decrease in distress in subsequent waves of the pandemic. Larger longitudinal increases in loneliness were noted among individuals in the elevated distress trajectory, compared to other trajectories. Pre-pandemic psychopathology was associated with elevated distress early in the pandemic.

Conclusions

The largest trajectory showed low and declining psychological distress, highlighting the resilience of the majority of late adolescents. However, a subgroup of adolescents experienced large increases in psychological distress, identifying a group of individuals more vulnerable to pandemic-related stress.

Can we dissociate hypervigilance to social threats from altered perceptual decision-making processes in lonely individuals? An exploration with Drift Diffusion Modeling and event-related potentials

It has been hypothesized that lonely individuals demonstrate hypervigilance toward social threats. However, recent studies have raised doubts about the reliability of tasks commonly used to measure attentional biases toward threats. Two alternative approaches have been suggested to overcome the limitations of traditional analysis of attentional bias. First, the neurophysiological indicators of orienting to threats were shown to have superior psychometric characteristics compared to overt measures of behavioral performance. The second approach involves utilizing computational modeling to isolate latent components corresponding to specific cognitive mechanisms from observable data. To test the usefulness of these approaches in loneliness research, we analyzed behavioral and electroencephalographic (EEG) data from 26 lonely and 26 non-lonely participants who performed a dot-probe task using a computational modeling approach. We applied the Drift Diffusion Model (DDM) and extracted N2pc-an event-related potential that serves as an indicator of spatial attention. No evidence for social threat hypervigilance has been found in DDM parameters nor in N2pc characteristics in the current study. However, we did observe decreased drift rate and increased variability in drift rate between trials within the lonely group, indicating reduced efficiency in perceptual decision-making among lonely individuals. These effects were not detected using standard behavioral measures used in the dot-probe paradigm. Given that DDM indicators were sensitive to differences in perceptual discrimination between the two groups, even when no overt differences were found in standard behavioral measures, it may be postulated that computational approaches offer a more comprehensive understanding of cognitive processes.

Profiles and Transitions of Loneliness and Depressive Symptoms among Migrant Children: Predictive Role of Bullying Victimization

Although loneliness and depressive symptoms are particularly prominent among migrant children and often occur simultaneously, little is known about the co-occurring and transitional nature of loneliness and depressive symptoms among migrant children, and the role of bullying victimization on their profiles and transitions. This study examined the profiles and transitions of loneliness and depressive symptoms among migrant children using latent profile analysis and latent transition analysis, as well as how bullying victimization predicted their profile memberships and transitions. A total of 692 migrant children (55.3% males, Mage = 9.41, SD = 0.55, range = 8 to 12 years old at T1) participated in both two waves of the study over six months. The results indicated that low profile (59.2%), moderate profile (22.0%), moderately high profile (14.3%), and high profile (4.5%) were identified at Time 1; low profile (69.4%), predominantly loneliness profile (16.8%), predominantly depressive symptoms profile (6.5%), and high profile (7.3%) were identified at Time 2. Migrant children in at-risk profiles displayed varying degrees of transition. Migrant children experiencing more bullying victimization were more likely to belong or transition to at-risk profiles. The findings highlight the importance of subgroup differences considerations in understanding the co-occurring and transitional nature of loneliness and depressive symptoms, as well as the predictive role of bullying victimization, informing effective strategies for prevention and intervention.

An exploration of loneliness experienced by people living with mental illness and the impact on their recovery journey: An integrative review

WHAT IS KNOWN ON THE SUBJECT?: There is evidence that social isolation and loneliness is more prevalent in people living with mental illness than in the general population. People living with mental illness frequently experience stigma, discrimination, rejection, repeated psychiatric admissions, low self-esteem, low self-efficacy, and increased symptoms of paranoia, depression, and anxiety. There is evidence of common interventions that can be used to improve loneliness and social isolation such as psychosocial skills training and cognitive group therapy. WHAT THE PAPER ADDS TO EXISTING KNOWLEDGE?: This paper offers a comprehensive assessment of the evidence between mental illness, loneliness, and recovery. The results suggest that people living with mental illness experience elevated levels of social isolation and loneliness leading to poor recovery and quality of life. Social deprivation, social integration and romantic loneliness are related to loneliness, poor recovery, and reduced quality of life. A sense of belonging, ability to trust and hope are important aspects of improved loneliness, quality of life and recovery. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: The existing culture in mental health nursing practice needs to be examined to address loneliness in people living with mental illness and its impact on recovery. Existing tools to research loneliness do not consider dimensions in loneliness experience as reflected in the literature. Practice needs to demonstrate an integrated approach to recovery, optimal service delivery and augmentation of evidence-based clinical practice to improve individual's loneliness, social circumstances, and relationships. Practice needs to demonstrate nursing knowledge in caring for people living with mental illness experiencing loneliness. Further longitudinal research is required to clearly understand the relationship between loneliness, mental illness, and recovery.

ABSTRACT

INTRODUCTION: To our knowledge, there are no previous reviews on the impact of loneliness experienced by people aged 18-65, who are living with mental illness and their recovery experience.

AIM/QUESTION

To explore the experience and impact of loneliness in people living with mental illness during recovery.

METHOD

An integrative review.

RESULTS

A total of 17 papers met the inclusion criteria. The search was conducted using four electronic databases: MEDLINE, CINAHL, Scopus and PsycINFO. Across these 17 papers, participants were most commonly, diagnosed with schizophrenia or psychotic disorders and recruited from community mental health services.

DISCUSSION

The review revealed loneliness to be substantial in people living with mental illness and that loneliness affected their recovery, and their quality of life. The review identified many factors that contribute to loneliness including unemployment, financial strain, social deprivation, group housing, internalized stigma and mental illness symptoms. Individual factors such as social/community integration and social network size as well as an inability to trust, a sense of not belonging, hopelessness and lack of romance were also evident. Interventions targeting social functioning skills and social connectedness were found to improve social isolation and loneliness.

IMPLICATIONS FOR PRACTICE

It is vital for mental health nursing practice to employ an approach integrating physical health as well as social recovery needs, optimal service delivery and augmentation of evidence-based clinical practice to improve loneliness, recovery, and quality of life.

Social Withdrawal, Loneliness, and Health in Schizophrenia: Psychological and Neural Mechanisms

BACKGROUND AND HYPOTHESIS

Some of the most debilitating aspects of schizophrenia and other serious mental illnesses (SMI) are the impairments in social perception, motivation, and behavior that frequently accompany these conditions. These impairments may ultimately lead to chronic social disconnection (ie, social withdrawal, objective isolation, and perceived social isolation or loneliness), which may contribute to the poor cardiometabolic health and early mortality commonly observed in SMI. However, the psychological and neurobiological mechanisms underlying relationships between impairments in social perception and motivation and social isolation and loneliness in SMI remain incompletely understood.

STUDY DESIGN

A narrative, selective review of studies on social withdrawal, isolation, loneliness, and health in SMI.

STUDY RESULTS

We describe some of what is known and hypothesized about the psychological and neurobiological mechanisms of social disconnection in the general population, and how these mechanisms may contribute to social isolation and loneliness, and their consequences, in individuals with SMI.

CONCLUSIONS

A synthesis of evolutionary and cognitive theories with the "social homeostasis" model of social isolation and loneliness represents one testable framework for understanding the dynamic cognitive and biological correlates, as well as the health consequences, of social disconnection in SMI. The development of such an understanding may provide the basis for novel approaches for preventing or treating both functional disability and poor physical health that diminish the quality and length of life for many individuals with these conditions.

Developing an interpretation bias modification training task for alleviating loneliness in young people

OBJECTIVE

Loneliness is common among young people and is associated with negative health outcomes. Because loneliness is associated with a bias for interpreting social situations as threatening, cognitive bias modification for interpretation (CBM-I) training is a potential early intervention tool. We developed and delivered a single session of mental imagery enhanced digital CBM-I training, assessing feasibility, acceptability, and magnitude of change in interpretational style and loneliness.

METHOD

CBM-I training materials were developed using a co-creation approach with 18-25-year-olds with experience of loneliness. Another group of 18-25-year-olds with high loneliness received either online CBM-I (n = 29) or control (n = 27) training.

RESULTS

CBM-I training uptake and retention rates were 88% and 92%, respectively. Participants found the training acceptable. The CBM-I group showed a reduction in social threat interpretations (d = 0.77), an increase in social benign interpretations (d = 0.84), and a decrease in loneliness (d = 0.56). The control group showed a small reduction in social threat interpretations (d = 0.21), no change in social benign interpretations (d = 0.04), and an increase in loneliness (d = 0.41).

CONCLUSIONS

Interpretation biases relevant to youth loneliness may be modifiable, and CBM-I training could reduce feelings of loneliness. This informs psychological models of loneliness, and the development of CBM-I interventions targeting loneliness in young people.

Joint trajectories of loneliness, depressive symptoms, and social anxiety from middle childhood to early adolescence: associations with suicidal ideation

This study examined the joint trajectories of loneliness, depressive symptoms, and social anxiety from middle childhood to early adolescence and their associations with suicidal ideation. A total of 643 Chinese elementary school students (55.2% male; Mage = 9.01; SD = 0.75; range = 7 to 11 years at T1) completed measures on six occasions at 6-month intervals. Parallel process latent class growth models revealed five distinct trajectories of loneliness, depressive symptoms, and social anxiety: "congruent-low" (45.1%), "moderately low with predominant loneliness and depressive symptoms" (15.7%), "moderate with predominant loneliness and depressive symptoms" (4.2%), "moderately low with predominant social anxiety" (24.9%), and "congruent-high" (10.1%). The highest suicidal ideation was observed among adolescents who persistently experienced two or three symptoms, followed by those who persistently experienced one predominant symptom, and finally, adolescents who persistently experienced low levels of all three symptoms. The findings highlight the importance of individual differences considerations in understanding the joint patterns of loneliness, depressive symptoms, and social anxiety among youth during the transition into adolescence and the need for more sophisticated intervention programs tailored to the unique characteristics of the relevant trajectories to reduce the risk of suicidal ideation.

Social cognitive bias increases loneliness both directly and by decreasing social connection in patients with schizophrenia

While considerable emphasis has been put on investigating the mechanisms that drive reduced social connection in patients with schizophrenia (SCZ), recent studies have increasingly focused on the issue of loneliness in SCZ. As both social cognitive bias and self-reported empathy predict loneliness in non-clinical populations, the current study aims to examine the relationship between loneliness, reduced social connection and social cognitive biases, and self-reported empathy in SCZ. Ninety-three adult SCZ and sixty-six matched healthy individuals completed a battery of questionnaires measuring loneliness and social connection (Revised-UCLA Loneliness Scale, Lubben-Social Network Scale, Social Disconnectedness Scale), cognitive biases (Ambiguous Intentions Hostility Questionnaire, Davos Assessment of Cognitive Biases Scale, Cognitive Biases Questionnaire for psychosis) and self-reported empathy (Interpersonal Reactivity Index). Significant predictors of loneliness in SCZ were entered into two latent variables ("Social Threat Bias", "Social Connection"), and structural equation modeling was used to explore the direct and indirect relationships between Social Threat Bias, symptoms. and loneliness in SCZ. Patients reported higher levels of loneliness, cognitive biases and personal distress compared to controls. Furthermore, SCZ reported less social connection and perspective taking compared to controls. Structural equation modeling revealed that Social Threat Bias was linked to increased loneliness in SCZ both directly and indirectly via decreased social connection. Negative symptoms were directly linked with loneliness, while the association between affective symptoms and loneliness was mediated via Social Threat Bias. The results of the current study suggest that social threat bias should be considered while planning the interventions aimed to reduce loneliness in schizophrenia.

Alone in a Crowd: Is Social Contact Associated with Less Psychological Pain of Loneliness in Everyday Life?

People are often advised to engage in social contact to cope with the experience of loneliness and improve well-being. But are the moments of loneliness actually more bearable when spent in other people's company? In this research, we proposed and tested two conflicting theoretical accounts regarding the role of social contact: social contact is associated with a stronger (the amplifying account) or with a weaker (the buffering account) negative effect of loneliness on psychological well-being. Analyses of three datasets collected using ecological momentary assessments (Nindividuals = 3,035) revealed that the negative association between loneliness and well-being was stronger when participants were with others than alone, consistent with the amplifying account. Further, when participants experienced high levels of loneliness, being with others was associated with the same or with even a lower level of well-being than being alone. These findings suggest that simply spending time with others (vs. alone) is not associated with a reduced burden of loneliness and may even backfire.

Supplementary Information

The online version contains supplementary material available at 10.1007/s10902-023-00661-3.