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Background: This study aimed to identify the developmental trajectories of loneliness in Chinese children and examine the predictive roles of domain-specific environmental factors (i.e., family dysfunction and satisfaction of relatedness needs at school), personality factors (i.e., neuroticism and extraversion), and their interactions in these developmental trajectories., Methods: A total of 702 Chinese children (M age  = 8.95, SD = 0.76; 54.1 % boys) participated in assessments at six time points over three years at six-month intervals. Growth mixture modeling (GMM) was used to estimate trajectory classes for loneliness, followed by multivariate logistic regression analyses exploring associations between these classes and predictors., Results: GMM analyses identified three distinct trajectories of loneliness: "low-stable" (81.5 %), "moderate-increasing" (9.4 %), and "high-decreasing" (9.1 %). Multivariate logistic regression analyses revealed that family dysfunction and neuroticism served as risk factors for adverse loneliness trajectories, while satisfaction of relatedness needs at school and extraversion acted as protective factors. Furthermore, the interaction between family dysfunction and extraversion indicated that extraversion did not mitigate the adverse effects of high family dysfunction on children's loneliness, emphasizing the vital need to support positive family functioning among all children., Limitations: This study did not incorporate biological variables (e.g., genetics), which are crucial in the evolutionary theory of loneliness., Conclusions: The identification of three distinct trajectory groups of children's loneliness, along with key environmental and personality predictors, suggests that interventions should be tailored to each group's unique characteristics., Competing Interests: Declaration of competing interest None., (Copyright © 2024 Elsevier B.V. All rights reserved.)

This study examined three models (relationship-driven model, symptom-driven model and transactional model) testing the across-time bidirectional relations between psychological maltreatment by teachers and early adolescents' psychosocial adjustment (i.e., internalizing problems, externalizing problems, and academic achievement) during early adolescence. A total of 4169 Chinese early adolescents (M age  = 9.93 years, SD = 0.73, 54% males) completed assessments across five waves, every six months. Employing autoregressive latent trajectory models with structured residuals (ALT-SR), the results revealed that adolescents' internalizing problems and academic achievement were predicted by psychological maltreatment by teachers (supporting the relationship-driven model), whereas externalizing problems and psychological maltreatment by teachers were bidirectionally related (supporting the transactional model). Moreover, sex moderated the relations between psychological maltreatment by teachers and psychosocial adjustment. The finding of differential relations between psychological maltreatment by teachers and three components of psychosocial adjustment (i.e., internalizing problems, externalizing problems, and academic achievement) indicated that prevention and interventions should be tailored to different psychosocial adjustment difficulties., (Copyright © 2024 Elsevier Ltd. All rights reserved.)

This study aimed to identify sex-specific co-developmental trajectories of multiple forms of childhood victimization: family maltreatment (FM), psychological maltreatment by teachers (PMT), and peer victimization (PV), and their relations to prosocial and delinquent behaviors among elementary school students. A total of 4378 Chinese elementary school students (Mage = 9.93; SD = 0.92; 55.14% boys) participated in assessments on five occasions, using six-month intervals. Parallel process latent class growth model analyses revealed three trajectories for boys: Congruent-low (75.64%), High-PV, Moderate-FM and PMT (14.62%), and Moderate-PV, High-FM and PMT (9.74%). Similarly, girls exhibited three trajectories: Congruent-low (81.11%), Moderate-PMT, High-FM and PV (10.54%), and High-PMT, Moderate-FM and PV (8.35%). The results indicated that boys were more susceptible than girls to three forms of childhood victimization. Furthermore, boys were especially vulnerable to co-occurring FM and PMT. In contrast, girls were more vulnerable to co-occurring FM and PV. Additionally, after experiencing childhood victimization, girls showed a greater hindrance in prosocial behavior development, whereas boys exhibited a more significant increase in delinquent behavior. These findings underscore the importance of considering sex differences in understanding multiple forms of childhood victimization and provide important insights for prevention and intervention efforts., Competing Interests: Declaration of competing interest The authors declare that they have no conflict of interest., (Copyright © 2024 Elsevier Ltd. All rights reserved.)

Background: Childhood maltreatment is a risk factor for internalizing and externalizing symptoms in early adolescents. However, few studies have examined the associations between profiles of childhood maltreatment and trajectories of internalizing and externalizing symptoms in Chinese early adolescents., Objectives: First, this study aimed to identify profiles of childhood maltreatment (i.e., physical abuse, emotional abuse, physical neglect, and emotional neglect) using latent profile analysis (LPA). Second, this study aimed to elucidate the associations between the profiles and trajectories of the early adolescents' internalizing and externalizing symptoms using latent growth curve analysis (LGCM)., Participants and Setting: The baseline sample included 1954 Chinese early adolescents (44.7 % girls) in Grade 4 with an average age of 11.39 years (SD = 0.56)., Method: Assessments were conducted on four occasions, six months apart. Childhood maltreatment was assessed at Time 1. Internalizing and externalizing symptoms were assessed from Time 1 to Time 4., Results: Three profiles for the early adolescents were identified: Low Childhood Maltreatment (n = 1446; 74.00 %), Moderately High Neglect and Low Abuse (n = 300; 15.35 %), and High Abuse and Moderately Low Neglect (n = 208; 10.65 %). The levels of internalizing and externalizing symptoms were the highest for the students in the High Abuse and Moderately Low Neglect profile, followed by the students in the Moderate High Neglect and Low Abuse profile. However, the rate of decline in internalizing and externalizing symptoms over time was the fastest within the High Abuse and Moderate Low Neglect profile, followed by the Moderate High Neglect and Low Abuse profile., Conclusion: This study contributes to the understanding of childhood maltreatment profiles among early adolescents in China and their impact on internalizing and externalizing symptoms, while also discussing the results from a specific cultural perspective., Competing Interests: Declaration of competing interest The authors declare that they have no conflict of interest., (Copyright © 2024. Published by Elsevier Ltd.)

Competency-based teasing has been identified as a risk factor for children's depressive symptoms. However, the specific psychological mechanisms mediating this relationship are not well understood, especially in the context of Chinese culture. This study examined the relationship between competency-based teasing, subsequent depressive symptoms, and the possible mediating role of positivity in Chinese children by using parallel process latent growth curve modelling. Gender differences were also explored. A sample of 4376 Chinese children (55.1% boys; age: M = 9.98 years, SD = 0.88) completed measurements of the relevant constructs on five occasions across 2 years, using half-year intervals. The findings revealed that competency-based teasing was significantly positively associated with subsequent depressive symptoms in Chinese children. Furthermore, positivity mediated this relationship in girls, but not in boys. The results suggest that positivity-cultivating and gender-specific interventions may be effective to reduce the risk of depressive symptoms in Chinese children., (© 2024 John Wiley & Sons Ltd.)

Introduction: The current study aimed to examine the longitudinal associations among basic psychological need satisfaction at school (BPNSS), self-esteem, and suicidal ideation (SI), including whether self-esteem functioned as a mediator of the relations between BPNSS and SI at the within-person level after disentangling between- and within-person associations encompassing middle childhood to early adolescence., Methods: A total of 650 Chinese students (53.54% boys, M age  = 9.95, SD = 0.75 at Time 1) completed measures on four occasions across 1.5 years, using 6-month intervals. Random intercept cross-lagged panel models were applied to disaggregate between- and within-person effects, thus providing greater confidence in elucidating the causal relations among study variables., Results: The results showed that at the within-person level: (a) BPNSS negatively predicted SI; (b) BPNSS positively predicted self-esteem; (c) Self-esteem negatively predicted SI; and (d) BPNSS indirectly predicted SI via self-esteem., Conclusion: These findings advanced the literature by demonstrating longitudinal associations among BPNSS, self-esteem, and SI at the within-person level, and highlighting the significance of distinguishing between- and within-person effects in developing prevention and intervention programs aimed at reducing SI over time from middle childhood to early adolescence., (© 2024 Foundation for Professionals in Services to Adolescents.)

Objective: The study used both person-centered (i.e., parallel process latent class growth modeling) and variable-centered (i.e., random intercept cross-lagged panel modeling) approaches to examine developmental changes in global and domain-specific self-esteem from middle childhood to early adolescence., Method: A total of 715 Chinese youth participated (54.3% boys; 45.7% girls; M age  = 9.96; SD = 0.51) in a 6-wave longitudinal study with 6-month intervals., Results: Parallel process latent class growth modeling identified three co-developmental trajectories of global and domain-specific self-esteem: Congruent high increasing and then flattening global and domain-specific self-esteem, congruent moderate domain-specific self-esteem with convex global self-esteem, and congruent low with concave appearance and global self-esteem. Results from random intercept cross-lagged panel modeling found reciprocal within-person associations between academic self-esteem and global self-esteem; global self-esteem significantly predicted social self-esteem, while physical appearance self-esteem significantly predicted global self-esteem., Conclusion: Evidence was provided for top-down and bottom-up effects of self-esteem among Chinese youth. The findings provided new insight into the development of self-esteem in youth., (© 2023 Wiley Periodicals LLC.)

Background: Psychological maltreatment by teachers and peer victimization are significant public health issues among youth. However, few studies have verified transactional associations between psychological maltreatment by teachers and peer victimization at the within-person level and the mediating roles of depression and aggression have yet to be fully evaluated., Objective: This study examined the transactional associations between psychological maltreatment by teachers and peer victimization from middle childhood to early adolescence, separating within- and between-person variation. The study also examined whether youth's depression and aggression mediated the associations., Participants and Setting: A total of 4945 Chinese youth (M age  = 9.92 years, SD = 0.73 53 % boys) completed a packet of measures on five occasions at 6-month intervals from May of 2017 to May of 2019., Methods: Random Intercept Cross-Lagged Panel Models (RI-CLPMs) were used to distinguish between- and within-person effects., Results: The results indicated that: (a) Psychological maltreatment by teachers predicted peer victimization, and vice versa; (b) Depression (but not aggression) mediated the associations from peer victimization to psychological maltreatment by teachers., Conclusions: The findings supported bidirectional spillover effects between adverse teacher-student and peer interactions and demonstrated at the within-person level that such effects were transmitted indirectly via youth's depression., Competing Interests: Declaration of competing interest The authors declare that they have no conflict of interest., (Copyright © 2024 Elsevier Ltd. All rights reserved.)

Objective: In this multi-informant, 3-year longitudinal study, the bidirectional relations between externalizing and internalizing problems were investigated, along with whether peer victimization and academic achievement mediated their relations after separating between-person effects from within-person effects., Method: A sample of 3238 Chinese children (55.02% boys; M age T1 = 9.89 years) reported semiannually on peer victimization and both externalizing and internalizing problems, and parents reported on their children's externalizing and internalizing problems. Students' objective academic achievement data (i.e. final exam scores) were obtained from school records., Results: Random intercepts cross-lagged panel modeling (RI-CLPM) revealed that neither academic achievement nor peer victimization mediated the relations between externalizing and internalizing problems in both self and parent reports at the within-person level. The cross-lagged panel models (CLPM) results supported that peer victimization (but not academic achievement) mediated the relations from internalizing to externalizing problems or externalizing to internalizing problems, whether self-reported or parent-reported. This study also identified meaningful sex differences in focal relations among children., Conclusions: Findings illustrate the importance of distinguishing within-person and between- person associations, with within- person findings failing to support the hypothesized mediating pathways of the Dual Failure or Acting Out Models among children.

Previous research has shown a strong link between deviant peer affiliation (DPA) and externalizing problems (EXT) among children and adolescents. Little is known about how DPA and EXT develop jointly over time or possible sex differences in their development. This longitudinal study identified sex-specific joint trajectories of DPA and EXT from middle childhood to early adolescence and investigated the predictive role of family maltreatment experiences in joint trajectories of DPA and EXT. A total of 3622 Chinese elementary school students in grades 3 and 4 (M age  = 10, SD = 0.53; 46.5% girls) comprised the sample. Assessments were conducted every six months on five occasions across 2.5 years. Parallel process latent class growth modeling (PP-LCGM) was used to explore the joint trajectories of DPA and EXT for boys and girls separately. The PP-LCGM identified four trajectories for boys: "congruent-low" (78.2%), "congruent-high" (12.40%), "deviant peer affiliation increasing" (6.5%), and "congruent late increasing" (2.9%). Four trajectories were identified for girls: "congruent-low" (82.5%), "slowly increasing" (10.2%), and "deviant peer affiliation desisting" (5.6%), and "congruent late increasing" (1.7%). After controlling for socioeconomic status (SES), the results showed that compared to the congruent-low group, more severe family maltreatment predicted the high and high-start trajectories for boys. The findings highlighted the joint development of DPA and EXT and the sex differences associated with their development. Findings also shed light on the importance of sex in developmental responses to family maltreatment., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany.)

Background: Previous cross-sectional and unidirectional longitudinal studies have identified positive associations between childhood victimization and neuroticism in children. However, these studies have not simultaneously examined multiple common sources of childhood victimization (family abuse, teacher abuse, and peer victimization) in relation to neuroticism nor have they distinguished between- and within-person effects. Moreover, the moderating role of child sex in their associations has yet to be fully evaluated., Objective: This study examined the within-person longitudinal associations between three common sources of childhood victimization and neuroticism in Chinese children and whether these effects differed between boys and girls., Participants and Setting: The sample included 4315 children (55.1 % boys) with an average age of 9.93 (SD = 0.73) years from a large city in China., Methods: Participants completed self-report measures on five occasions across two years, employing six-month intervals. Random Intercept Cross-Lagged Panel Models (RI-CLPMs) were used to distinguish between-person and within-person effects., Results: Results included: (a) Family abuse (excluding sexual abuse) and peer victimization directly predicted subsequent increases in neuroticism at the within-person level and vice versa, whereas teacher abuse and neuroticism did not reveal significant longitudinal relations at the within-person level; (b) The effect of family abuse on neuroticism at the within-person level was stronger in boys, while the effect of peer victimization on neuroticism at the within-person level was stronger in girls., Conclusions: Prevention and intervention strategies targeting high neuroticism and childhood victimization should consider the roles of both family and peer systems., (Copyright © 2024 Elsevier Ltd. All rights reserved.)

Background: Machine learning (ML) has been widely used to predict suicidal ideation (SI) in adolescents and adults. Nevertheless, studies of accurate and efficient models of SI prediction with preadolescent children are still needed because SI is surprisingly prevalent during the transition into adolescence. This study aimed to explore the potential of ML models to predict SI among preadolescent children., Methods: A total of 4691 Chinese children (54.89 % boys, M age  = 10.92 at baseline) and their parents completed relevant measures at baseline and the children provided 6-month follow-up data for SI. The current study compared four ML models: Random Forest (RF), Decision Tree (DT), Support Vector Machine (SVM), and Multilayer Perceptron (MLP), to predict SI and to identify variables with predictive value based on the best-performing model among Chinese preadolescent children., Results: The RF model achieved the highest discriminant performance with an AUC of 0.92, accuracy of 0.93 (balanced accuracy = 0.88). The factors of internalizing problems, externalizing problems, neuroticism, childhood maltreatment, and subjective well-being in school demonstrated the highest values in predicting SI., Conclusion: The findings of this study suggested that ML models based on the observation and assessment of children's general characteristics and experiences in everyday life can serve as convenient screening and evaluation tools for suicide risk assessment among Chinese preadolescent children. The findings also provide insights for early intervention., Competing Interests: Declaration of competing interest None., (Copyright © 2024. Published by Elsevier B.V.)

Cyberbullying (perpetration and victimization) is a prevalent public health problem associated with a wide variety of psychopathological symptoms (e.g., depression, anxiety, delinquent behaviors, and substance use). However, the generality and specificity of relations between cyberbullying involvement and psychopathological symptoms have not been investigated. Thus, the current study used a latent dimensional approach to examine how cyberbullying (perpetration and victimization) is associated with underlying dimensions of psychopathology as well as with specific symptoms. General and specific associations were estimated by a series of structural equation models with data from 654 Chinese adolescents (52.4% girls, M age  = 12.96 years, SD = 0.67) in a three-wave study. Results indicated that cyberbullying (perpetration and victimization) was significantly and positively associated with latent internalizing and externalizing dimensions. Cyberbullying involvement was non-significantly associated with most specific symptom domains after accounting for the impact of the latent internalizing and externalizing factors. In a few cases, cyberbullying involvement was directly and uniquely associated with specific symptoms. Findings of significant general and symptom-specific associations have important implications for efforts to develop more efficient and targeted strategies for preventing and treating mental health problems associated with cyberbullying., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany.)