Personality changes during adolescence predict young adult psychosis proneness and mediate gene-environment interplays of schizophrenia risk.

BACKGROUND: Psychotic symptoms in adolescence are associated with social adversity and genetic risk for schizophrenia. This gene-environment interplay may be mediated by personality, which also develops during adolescence. We hypothesized that (i) personality development predicts later Psychosis Proneness Signs (PPS), and (ii) personality traits mediate the association between genetic risk for schizophrenia, social adversities, and psychosis. METHODS: A total of 784 individuals were selected within the IMAGEN cohort (Discovery Sample-DS: 526; Validation Sample-VS: 258); personality was assessed at baseline (13-15 years), follow-up-1 (FU1, 16-17 years), and FU2 (18-20 years). Latent growth curve models served to compute coefficients of individual change across 14 personality variables. A support vector machine algorithm employed these coefficients to predict PPS at FU3 (21-24 years). We computed mediation analyses, including personality-based predictions and self-reported bullying victimization as serial mediators along the pathway between polygenic risk score (PRS) for schizophrenia and FU3 PPS. We replicated the main findings also on 1132 adolescents recruited within the TRAILS cohort. RESULTS: Growth scores in neuroticism and openness predicted PPS with 65.6% balanced accuracy in the DS, and 69.5% in the VS Mediations revealed a significant positive direct effect of PRS on PPS (confidence interval [CI] 0.01-0.15), and an indirect effect, serially mediated by personality-based predictions and victimization (CI 0.006-0.01), replicated in the TRAILS cohort (CI 0.0004-0.004). CONCLUSIONS: Adolescent personality changes may predate future experiences associated with psychosis susceptibility. PPS personality-based predictions mediate the relationship between PRS and victimization toward adult PPS, suggesting that gene-environment correlations proposed for psychosis are partly mediated by personality.

Concurrent and longitudinal associations of developmental language disorder with peer victimization in adolescence: evidence from a co-twin study.

BACKGROUND: Children with developmental language disorder (DLD) experience higher levels of peer victimization than their peers. However, it is not known if such associations reflect genetic and environmental confounding. We used a co-twin control design to investigate the association of language difficulties (DLD and separately poor pragmatic language) with peer victimization and compare the developmental trajectories of peer victimization across adolescence for those with and without language difficulties. METHODS: Participants were 3,400 pairs of twins in the Twins Early Development Study (TEDS), a UK-based population birth cohort. Language abilities were assessed via online tests at age 11 and peer victimization was self-reported at ages 11, 14 and 16. Language difficulties were defined as language abilities at least -1.25 SD below the mean of the TEDS sample. We performed linear regressions and latent growth curve modeling at a population level and within monozygotic and same-sex dizygotic twin pairs. RESULTS: At population level, youth with DLD experienced higher levels of peer victimization at ages 11 (ß = 0.27, 95% Confidence Interval (CI) 0.20-0.35), 14 (ß = 0.15, 95% CI 0.03-0.27) and 16 (ß = 0.17, 95% CI 0.03-0.32) and a sharper decline in peer victimization between ages 11 and 16 compared to their peers without DLD. The associations between DLD and peer victimization were reduced in strength and not statistically significant in within-twin models. Moreover, there was no difference in the rate of change in peer victimization between twin pairs discordant for DLD. Results were similar for the association of poor pragmatic language with peer victimization. CONCLUSIONS: Associations between language difficulties (DLD and separately, poor pragmatic language) and peer victimization were confounded by genetic and shared environmental factors. Identifying specific factors underlying these associations is important for guiding future work to reduce peer victimization among adolescents with language difficulties.

The association of sexual minority status and bullying victimization is modified by sex and grade: findings from a nationally representative sample.

BACKGROUND: Sexual minority status is associated with face-to-face bullying and cyberbullying victimization. However, limited studies have investigated whether such a relationship differs by sex or grade in a nationally representative sample. METHODS: We concatenated the national high school data from the Youth Risk Behavior Surveillance System (YRBSS) chronologically from 2015 to 2019, resulting in a sample of 32,542 high school students. We constructed models with the interaction term between sexual minority status and biological sex assigned at birth to test the effect modification by sex on both the multiplicative and additive scales. A similar method was used to test the effect modification by grade. RESULTS: Among heterosexual students, females had a higher odds of being bullied than males, while among sexual minority students, males had a higher odds of being bullied. The effect modification by sex was significant on both the multiplicative and additive scales. We also found a decreasing trend of bullying victimization as the grade increased among both heterosexual and sexual minority students. The effect modification by the grade was significant on both the multiplicative and the additive scale. CONCLUSIONS: Teachers and public health workers should consider the difference in sex and grade when designing prevention programs to help sexual minority students.

Social poverty indicators with school bullying victimization: evidence from the global school-based student health survey (GSHS).

BACKGROUND: School bullying is prevalent in children and adolescents. Bullying victims are seen higher risk of negative psychological outcomes. Previously published studies suggested that social indicators may pose significant influence on bullying victimization. However, the association between social poverty and bullying victimization has not been exclusively discussed. METHODS: In this cross-sectional study, we analyzed the association between 6 commonly used social poverty indicators (Poverty Headcount Ratio, PHR; Poverty Gap, PG; Squared Poverty Gap, SPG; monthly household per capita income, PCI; Watts' Poverty Index, WPI; the Gini Index, Gini) and the prevalence of school bullying at country level by using the Global school-based Student Health Survey (GSHS) database. RESULTS: Altogether 16 countries were included into the final analysis, with school bullying victimization prevalence ranged from 12.9 to 47.5%. Bubble plots revealed statistically significant associations between the three indicators measuring absolute poverty level (PHR, PCI, WPI) and bullying victimization. Subsequently performed principal component regression indicated that, for all types of bullying victimization, the increase of absolute poverty level was related to elevated prevalence rates, and the association was particularly strong for verbal bullying victimization. CONCLUSIONS: Our study results may suggest that absolute social poverty is an important parameter for constructing and implementing school bullying victimization intervention strategies and measures.

The mediating effects of school bullying victimization in the relationship between childhood trauma and NSSI among adolescents with mood disorders.

BACKGROUND: Nonsuicidal self-injury (NSSI) is a serious problem in the adolescent population worldwide. Childhood trauma and bullying have been identified as risk factors for NSSI. We explored the relationships among Childhood trauma, Bullying victimization and the severity of NSSI behaviours, and test the effect of Bullying victimization in mediating the association between Childhood trauma and the NSSI behaviours. METHODS: A total of 123 adolescents were recruited. They were diagnosed with depression or depressive episodes of bipolar disorder and had experienced NSSI in the last year. They were assessed using the Chinese version of the Childhood Trauma Questionnaire (CTQ-C), the Revised Olweus Bullying Victimization Questionnaire (OBVQ-R), and the Adolescent Self-Harm Questionnaire (ASHQ). RESULTS: Females presented a significantly greater prevalence of sexual abuse and relationship bullying than boys. Individuals in the younger age group (10-14 years) presented a greater incidence of emotional neglect, verbal bullying, relationship bullying, and total bullying, and their NSSI score was also higher than that of those in the older age group (15-19 years). Only children show a greater prevalence of sexual abuse than nononly children. Single-parent families scored higher on emotional abuse, emotional neglect, physical neglect and physical bullying than two-parent families. There was a significant positive correlation between each dimension of childhood trauma and all the dimensions of bullying, between childhood trauma and NSSI, and between bullying and NSSI. Childhood trauma can not only directly affect the severity of NSSI but also indirectly aggravate the severity of NSSI through bullying victimization. The mediating effects of bullying victimization on emotional abuse, physical abuse, emotional neglect and physical neglect were 14%, 21%, 20%, 13% and 20%, respectively. CONCLUSION: There was a significant positive correlation between childhood trauma and bullying, between childhood trauma and NSSI, and between bullying and NSSI. Childhood trauma can not only directly affect the severity of NSSI but also indirectly aggravate the severity of NSSI through bullying victimization. Bullying victimization played the partial mediating effects between Childhood trauma and NSSI.

Peer victimization in early adolescence and maladjustment in adulthood.

Studies report different effect sizes for associations between peer victimization and later maladjustment. A possible origin of this heterogeneity is the length of the interval between victimization and maladjustment assessments. Effect sizes might also vary as a function of reporter. Longitudinal data from TRAILS, a study of adolescents followed from age 11 to 29 (baseline n = 2229) were used to test whether peer victimization assessed from adolescents themselves, their parents, teachers, and peers predicted internalizing symptoms, thought problems, and somatic complaints at six follow-ups with a temporal distance of up to 19 years. Neither self- nor peer-reported victimization predicted later maladjustment. In contrast, parent-reported victimization stably predicted adult maladjustment. Teacher-reported victimization also predicted maladjustment but associations were weaker and largely non-significant when parent reports were accounted for simultaneously. Parent-reported peer victimization has traditionally played a minor role in bullying research as parents are usually not present when victimization occurs. The results of this study however suggest that parents should be listened to when talking about their offspring being victimized.

Why rejection sensitivity leads to adolescents' loneliness: Differential exposure, reactivity, and exposure-reactivity models.

INTRODUCTION: Rejection sensitivity is considered a risk factor for loneliness; however, the underlying mechanisms remain unknown. Adopting the constructs of exposure, reactivity, and exposure-reactivity from the personality framework, this study investigated three models of rejection sensitivity, bullying victimization, and loneliness to reveal why rejection sensitivity leads to loneliness among Chinese early adolescents. METHODS: Using a longitudinal design, three-wave data were obtained (with approximately 6-month intervals) from 2381 Chinese early adolescents (51.2% boys at Time 1, Mage = 13.38, SD = 0.59) from 7 secondary schools. Students reported on their rejection sensitivity at Time 1, bullying victimization at Times 1 and 2, and their loneliness at Times 2 and 3. A longitudinal moderated mediation model was conducted to analyze the association between variables. RESULTS: Path analyses demonstrated that rejection sensitivity was associated with greater loneliness for adolescents in which association was mediated by bullying victimization. High levels of rejection sensitivity exacerbate the adverse effect of bullying victimization on loneliness. Furthermore, in line with the differential exposure-reactivity model, the effect of rejection sensitivity on loneliness mediated by bullying victimization only existed for high rejection-sensitive adolescents. CONCLUSIONS: The findings emphasize the dual role of rejection sensitivity in the development process of adolescents' loneliness and highlight the importance of identifying rejection-sensitive adolescents for intervention and prevention efforts.

The reciprocal relationship between child maltreatment and children's bullying victimization in China.

Children who experience physical and psychological maltreatment within their family are more likely to become victims of abuse outside the family. In Chinese culture, children's victimization may also be a precursor to parenting behaviors. Nevertheless, the reciprocal relationship between child maltreatment and children's bullying victimization remains unclear, particularly in Chinese culture. This study aimed to evaluate the reciprocal association between child maltreatment and children's bullying victimization in China, as well as its gender differences. A total of 891 children aged 8-11 years in China participated in the study at four time points. The potential reciprocal link was examined using a cross-lagged model. The results indicated that physical abuse predicted children's bullying victimization across four time points, while physical neglect predicted children's bullying victimization during the first three time points. The effects of emotional abuse and neglect were negligible. Conversely, children's bullying victimization consistently predicted various types of parental maltreatment over time. Some gender differences in the relationship were found. The findings emphasized a reciprocal relationship between child maltreatment within the family and children's bullying victimization at school. Understanding the cyclical patterns between child maltreatment and bullying victimization may help improve family education approaches and reduce children's bullying victimization.

Is prior bullying victimization associated with subsequent bullying perpetration? A theoretical framework based on the Threat-Motivation model.

INTRODUCTION: Bullying among adolescents is a global public health issue prevalent in schools, posing significant risks to positive adolescent development. Studies have shown that bullied adolescents tend to engage in more bullying perpetration, but this underlying process of longitudinal correlation has not been fully elucidated. METHODS: Based on two waves of longitudinal data collected from 347 junior and 144 senior high school students in China (Mage = 13.66 years, SDage = 1.46, 59.27% boys) at 1-year intervals, two moderated chain-mediation models were used to explore the longitudinal correlations between bullying victimization and bullying perpetration and its underlying processes. RESULTS: The results found a significant positive correlation between adolescents' bullying victimization experiences 1 year prior and bullying perpetration 1 year later. Furthermore, fear of negative evaluation and psychache played a longitudinal chain-mediating role in the process, with self-esteem and grade moderating this mediating pathway, either enhancing or weakening the effect. CONCLUSIONS: This study demonstrates that prior bullying victimization is longitudinally and positively associated with subsequent bullying perpetration among adolescents. This process is mediated by fear of negative evaluation and psychache, with self-esteem and grade level as moderators. Based on these conclusions, we have formulated the Threat-Motivation Model, offering a framework to understand the relationship between bullying victimization and bullying perpetration. Practical implications, including strategies to reduce bullying in youth groups, are discussed.

How receiving welfare assistance could be linked to children's bullying victimization: Exploring the potential pathways.

The study proposes and tests the pathways from receiving welfare assistance to children's bullying victimization. Specifically, the study examines whether children's difficulty making friends and school disconnection mediate the association between welfare assistance receipt to children's bullying victimization. The 2019 National Survey of Children's Health dataset was used, and the sample consisted of 12,230 caregivers of adolescents, aged 12-17 years. A path model was utilized to explore the proposed pathways. Findings suggest that welfare assistance receipt was not significantly associated with children's bullying victimization. It was positively related to children's bullying victimization through the mediating roles of having difficulty making friends and school disconnection. Schools and communities need to create spaces where youth can connect with peers, which is an important part of their development.

Does Bullying Victimization Accelerate Adolescents' Non-suicidal Self-injury? The Mediating Role of Negation Emotions and The Moderating Role of Submissive Behavior.

Based on general strain theory, the current study examined whether bullying victimization was significantly related to adolescents' non-suicidal self-injury and whether negation emotions mediated this association and submissive behavior moderated this mediation process. A total of 1,984 adolescents completed a series of anonymous questionnaires regarding bullying victimization, negative emotions, non-suicidal self-injury, and submissive behavior. Results showed that bullying victimization was significantly and positively associated with non-suicidal self-injury and this relation was partially mediated by negative emotions. Submissive behavior moderated the relation between bullying victimization and non-suicidal self-injury as well as negation emotions and non-suicidal self-injury. Specifically, the victims of bullying with high submissive behavior were more likely to develop non-suicidal self-injury. Adolescents who had higher negative emotions were at greater risk of engaging in non-suicidal self-injury when they also had high submissive behavior. The positive association between negative emotions and non-suicidal self-injury was stronger in females than males.

Proposing and testing the pathways from bullying victimization to bringing a weapon to school.

OBJECTIVE: The current study examined whether bullying victimization was associated with bringing a weapon to school, fully or partly mediated by feeling unsafe in school, negative future education orientation, and skipping school. METHOD: Data from 6199 students (12-18 years old), who had filled out the 2017 School Crime Supplement to the National Crime Victimization Survey, were analyzed. RESULTS: The results showed a positive association between bullying victimization and bringing a weapon to school. The link was both direct and indirect through the mediating roles of feeling unsafe in school, having a negative future education orientation, and skipping school. CONCLUSION: Thus, victims of bullying tended to feel unsafe in school, have a negative future education orientation, and skip school-all of which were positively associated with bringing a weapon to school.

Socio-Economic Status and Bullying Victimization in India: A Study About Social Misfit and Minority Perception.

The Social Misfit Theory, which states that some individuals deviate from what is normative in a community and may therefore be more likely to be victimized, has mostly been studied in Western countries. The current study addresses in a longitudinal sample whether socio-economic minorities (SES) in the classroom (a contextual SES minority) are more likely to become victims of bullying in India, and whether the relation between minority status and victimization is mediated by perception of oneself as a minority. The current study used three waves separated by three month intervals. A sample of youth from Indore India (grades 7 to 9; N = 1238; M-ageT1 = 13.15, SD = 1.16, 24 percent girls) was used. It was found that being a contextual SES minority was related to more victimization, but only when the contextual status was corroborated by the perceived minority status. However, over time, being part of a contextual minority predicted decreased victimization, possibly pointing to normative beliefs and values in the Indian context. The results of this study are in contrast to the Social Misfit Theory, but do support self-perception as a mediator.

Trends in Bullying Victimization and Social Unsafety for Sexually and Gender Diverse Students.

Research has documented trends in bullying victimization for sexually diverse adolescents in the US, but trends regarding school social unsafety are understudied and there is a dearth of research examining these trends for gender diverse adolescents. This study aimed to identify disparities in bullying victimization and feelings of social unsafety in schools for sexually and gender diverse adolescents. Data stem from the 2014 (N = 15,800; M age = 14.17, SD = 1.50), 2016 (N = 22,310; M age = 14.17, SD = 1.49), and 2018 (N = 10,493; M age = 14.02, SD = 1.52) survey cycles of the Social Safety Monitor, a Dutch cross-sectional school-based study. Findings indicate that sexual orientation disparities remained relatively small, but stable over time, while gender diverse adolescents remained more likely to be victimized and feel unsafe in school, with larger disparities overall. Monitoring these trends is highly relevant, especially considering recent negative developments regarding societal acceptance of sexual and gender diversity.

Traditional and Race-based Bullying in Racial-Minority Majority and Racially Diverse Schools.

Few studies in the U.S. have simultaneously examined general and race-based bullying with consideration of school-level racial composition. The current study examined victimization as a function of school racial composition, in minority-majority and diverse schools (N = 1911, Mage = 13.7 years) enrolled in 7th grade in 24 public schools (42.3% Hispanics, 9.0% non-Hispanic White, 28.9% non-Hispanic Black, and 19.7% non-Hispanic Asian). Multilevel regression analyses suggest student-level protective factors related to both forms of victimization, but, school racial composition was only significant in explaining race-based bullying. Specifically, minority-majority schools had lower levels of race-based victimization compared to racially diverse schools. Findings suggest that consideration of school contextual factors offers a more nuanced understanding of the relation between race and victimization.

Linking Daily Victimization to Daily Affect Among Adolescents: The Mediating Role of Sleep Quality and Disturbance.

Bullying victimization is prevalent among adolescents and often linked to emotional problems. Prior studies have been focused on the concurrent or longitudinal associations between bullying victimization and emotional problems, but the daily associations and the underlying mechanisms remain unclear. Implementing daily diary method, the study aimed to examine the links between daily victimization and positive and negative affect as well as the mediating role of sleep quality and disturbance. A total of 265 Chinese adolescents (Mage = 11.65, SD = 0.74; 32.80% females) participated in this study and completed 7-day daily diaries on bullying victimization (traditional and cyber victimization), sleep quality and disturbance, and affect. As hypothesized, at the between-person level, sleep disturbance mediated the relationships between both traditional and cyber victimization and subsequent negative affect. At the within-person level, sleep quality mediated the pathway between traditional victimization and next-day negative affect; furthermore, sleep disturbance mediated the pathway between traditional victimization and positive affect the following day. These findings highlight the mediating roles of sleep quality and sleep disturbance in the relationships between stressful victimizing experiences and emotional problems and also provide novel insights into these associations.

Peer Bullying Victimization Trajectories for Sexually and Gender Diverse Youth from Early Childhood to Late Adolescence.

Sexually and gender diverse (SGD) youth experience more peer bullying victimization than heterosexual, cisgender youth during adolescence, yet the emergence and persistence of these disparities remain underexplored. Also, it is unclear which factors are associated with these disparities across development, and how these disparities are linked to late adolescent health discrepancies. This study utilized the sample from the Millennium Cohort Study in Britain (N = 10,080; 51.3% assigned female at birth; Mage = 2.28, SDage = 0.46 at Wave 2), in which 23.74% of youth reported non-heterosexual attraction, 21.59% reported non-heterosexual identity, and 1.08% reported gender identity not in line with the sex assigned at birth. Using latent class growth modeling, four peer bullying victimization trajectories were identified, with early peak (7.2%), late childhood peak (6.3%), adolescence onset (12.8%), and low (73.6%) rates of victimization. SGD youth, compared to heterosexual and cisgender youth, were found to have increased odds of being in the victimization-involved classes, especially the adolescence onset class. The study further revealed that SGD youth reported more mental health and relational difficulties in childhood, which were linked to their heightened risk of longer-lasting victimization. Further, long-term victimization was found to partially account for the disparities in health and well-being for SGD youth in late adolescence. In conclusion, SGD youth were more likely to experience longer-lasting bullying victimization during childhood and adolescence, its related mental and relational vulnerabilities were already established in childhood, and such victimization disparities were further linked to their detrimental health and well-being in late adolescence. The design, hypotheses, and target analyses of the current study were preregistered on 21st April 2023 at https://osf.io/f2zxy .

Longitudinal and Reciprocal Effects in the Association Between School Bullying and Homicidal Ideation During Early Adolescence.

Several cross-sectional studies indicated a positive association between school bullying and homicidal ideation during early adolescence. However, few longitudinal studies investigated this association. This study examined whether a bi-directional relationship exists within the longitudinal association between bullying victimization or bullying perpetration and homicidal ideation among early adolescents using a Random Intercept Cross-Lagged Panel Model. A total of 1611 early adolescents (39.5% girls; Mage = 12.50 years, SD = 0.50) were recruited from the Chinese Early Adolescents Cohort study. Data on bullying victimization, bullying perpetration, and homicidal ideation collected during three time points (September 2019, September 2020, and September 2021) were used. Bullying victimization showed a significant positive association with homicidal ideation at the between-person level. Bullying victimization and bullying perpetration had a bi-directional relationship with homicidal ideation at the within-person level. Additionally, this study considered the impact of biological sex-based differences and bullying types on adolescents' homicidal ideation. Based on these findings, school bullying might exhibit unique reciprocal associations with homicidal ideation.

From childhood bullying victimization to resilience in emerging adulthood.

INTRODUCTION: The aim of this study was to explore how resilience is manifested in the experiences of emerging adults who were subjected to bullying victimization in school and have high levels of psychological functioning in emerging adulthood. METHODS: Fifteen Swedish emerging adults (Mage = 29.13, SD = 0.52) who, despite experiences of bullying victimization at age 10, had high levels of psychological functioning as emerging adults were interviewed. The interviews focused on experiences of bullying victimization and the long-term outcomes of these experiences. Qualitative methods were used in the analysis, with a specific focus on resilience. RESULTS/CONCLUSION: The findings illustrate how long-term outcomes of bullying victimization in school, in relation to resilience, comprise a dynamic process between personal agency and social resources in the environmental context.

School Bullying Victimization and Depression Symptoms in Adolescents: The Mediating Role of Internet Addiction and Moderating Role of Living Areas.

School bullying and depression are both serious social and public health problems among adolescents. Prior studies indicated a correlation between bullying and depression. However, the potential moderators remain largely unexplored. This study aimed to identify the mediating effect of Internet addiction and the moderating effect of living in urban or rural areas in the relationship between school bullying victimization and depression symptoms among Chinese adolescents. This cross-sectional study of adolescents was conducted using two-stage random cluster sampling of students in urban and rural public high schools in China. A moderated mediation model was constructed to uncover the underlying mechanism of school bullying victimization and depression symptoms. A total of 2,376 adolescents (52.65% females, mean age ± SD a 14.69 ± 1.76 years) were included in the study. The prevalence of clinical depression symptoms with a cut-off value of 16 on the Center for Epidemiological Studies Depression Scale (CES-D) was 21.76% (95% CI: 20.15, 23.46), and with a cut-off value of 20 on the CES-D was 13.85% (95% CI: 12.51, 15.30) for overall. Our findings indicated a significant positive association between school bullying victimization and depression symptoms (p < 0.01) and a significant mediating effect of Internet addiction in the association between school bullying victimization and depression symptoms (indirect effect = 1.143, 95% CI: 0.677, 1.609; percentage of mediation: 16.7%, 95% CI: 10.3, 23.1). This indirect relationship was partially moderated by the living in urban or rural areas in the mediation process. Specifically, the effect of school bullying victimization on Internet addiction was greater among urban adolescents (simple slope: 0.774, 95% CI: 0.524, 1.024, p < 0.01) than among rural adolescents (simple slope: 0.337, 95% CI: 0.132, 0.543, p < 0.01), but moderating effect of urban-rural areas was not significant on the relationship between Internet addiction and depression symptoms. These findings highlight the mediating role of Internet addiction and the moderating role of living areas in school bullying victimization and adolescents' depression symptoms, which provide evidence for social work, mental health services, and policy interventions for adolescents in China.