Connectome-based predictive modeling of Internet addiction symptomatology.

Internet addiction symptomatology (IAS) is characterized by persistent and involuntary patterns of compulsive Internet use, leading to significant impairments in both physical and mental well-being. Here, a connectome-based predictive modeling approach was applied to decode IAS from whole-brain resting-state functional connectivity in healthy population. The findings showed that IAS could be predicted by the functional connectivity between prefrontal cortex with the cerebellum and limbic lobe and connections of the occipital lobe with the limbic lobe and insula lobe. The identified edges associated with IAS exhibit generalizability in predicting IAS within an independent sample. Furthermore, we found that the unique contributing network, which predicted IAS in contrast to the prediction networks of alcohol use disorder symptomatology (the range of symptoms and behaviors associated with alcohol use disorder), prominently comprised connections involving the occipital lobe and other lobes. The current data-driven approach provides the first evidence of the predictive brain features of IAS based on the organization of intrinsic brain networks, thus advancing our understanding of the neurobiological basis of Internet addiction disorder (IAD) susceptibility, and may have implications for the timely intervention of people potentially at risk of IAD.

Validation of the Appearance-Related Social Media Consciousness Scale with Chinese adolescents and young adults.

Research has revealed a negative association between appearance-related social media consciousness (ASMC) and mental health, but the impact of this association in the Chinese population remains understudied. This study examined the psychometric properties of the ASMC scale among Chinese adolescents and young adults and to further investigate the scale's measurement invariance and differences in ASMC across gender and age groups. Exploratory and confirmatory factor analyses were conducted to examine the ASMC scale's factorial structure among Chinese adolescents and young adults, including 1109 adolescents (50.0% boys) aged 12-18 (mean, 14.89) years and 457 young adults (42.5% men) aged 18-25 (mean, 20.75) years. The measurement invariance across gender and age groups, internal consistency and convergent validity were examined. ASMC scale was found to have a unidimensional structure and to be invariant across gender and age groups. It exhibited excellent internal consistency and strong construct validity. Moderate gender differences and pronounced age differences in ASMC scale scores were observed. Our findings support the validity of the ASMC scale as an effective instrument for the measurement of appearance-related social media consciousness experience among Chinese young adults and adolescents. Further study is required to evaluate the status of ASMC as a risk factor for disordered eating and target for preventive interventions within Chinese samples.

How does COVID-19-related social media usage influence disordered eating? A daily diary study among Chinese adults during lockdown.

BACKGROUND: Despite previous studies highlighting the benefits of social media use during the COVID-19 pandemic, particularly under lockdown, limited research has identified the potential detrimental consequences of social media use during lockdown. Therefore, the purpose of this study is to examine the effects of social media on mental health in particular situations and the mechanisms underlying these effects. METHODS: A daily diary protocol was adopted. A total of 96 adults (Mage = 25.90 ± 8.32 years) were recruited from Xi'an, Shaanxi Province, China. COVID-19-related social media use, psychological distress, COVID-19-related stress and anxiety, and disordered eating were measured each day for a week. Multilevel path analyses for the nested data were conducted. RESULTS: Daily COVID-19-related social media use was positively related to daily disordered eating (r = .13 p < .001). Furthermore, the multilevel path analysis showed that psychological distress and COVID-19-related stress and anxiety mediated the relationship between COVID-19-related social media use and disordered eating at the within-person level. However, only COVID-19-related-anxiety mediated the relationship at the between-person level. CONCLUSIONS: Our findings contribute to the understanding of social media's impact during lockdown and provide implications for social media users, social media platform providers, mental health professionals, and governments regarding the correct and sustainable use of social media during the COVID-19 pandemic and in future public health emergencies.

Our study examined how using social media during the COVID-19 lockdown might be related to individuals' mental health, particularly stress, anxiety, and disordered eating. Using a daily diary design, we found that individuals with more frequent social media use to get information about COVID-19 exhibited higher stress and anxiety related to the pandemic, higher general psychological distress, as well as higher disordered eating. Multilevel mediation analyses further showed that COVID-19-related anxiety played a mediating role in the connection between COVID-19-related social media use and disordered eating, at the within-person level. These findings underscore the complex impacts of social media use during lockdowns and highlight the importance of managing social media consumption to protect mental health and well-being in such challenging times.

Functional connectivity mediating passive coping style and perceived stress in predicting anxiety.

BACKGROUND: Passive coping style (CS) and perceived stress play significant roles as influencing factors in the development of anxiety. However, the underlying neurobiological mechanism linking passive CS and perceived stress to anxiety susceptibility remains elusive. Thus, we aimed to investigate the relationships among passive CS, brain functional connectivity, perceived stress, and anxiety in young adults. METHODS: Data from the longitudinal Gene-Brain-Behavior Project(GBB) and Southwest University Longitudinal Imaging Multimodal Project(SLIM) were used. We confirmed the relationship among anxiety, passive CS and perceived stress. Then, we investigated the mediated functional connectivity between passive CS and perceived stress, and used these functional connections to predict present anxiety and follow-up anxiety one year later. RESULTS: Anxiety scores were significantly positively correlated with passive CS and perceived stress. At the brain network level, connections within the default mode network (DMN) and between the somatomotor network (SMN) and subcortical network (SUN) mediated the relationship between passive CS and perceived stress. Furthermore, present anxiety and follow-up anxiety one year later could be predicted by these mediated functional connections. Nodes with greater predictive contribution were mainly located in the left anterior cingulate gyrus (ACC), left inferior parietal gyrus (IPG), right superior frontal gyrus (SFG), and left middle frontal gyrus (MFG), mainly distributed on the DMN. CONCLUSION: These findings demonstrated that the mediated neurobiological mechanisms between passive CS and perceived stress could be used to predict present and future anxiety, which enhance understanding of the neurobiological basis of anxiety susceptibility in this passive CS and perceived stress and may have implications for early preventing and intervening mental disorders.

Gay Dating Apps Usage, Body Dissatisfaction, and Disordered Eating in Chinese Young Gay Men.

There is a paucity of research on the links between gay dating apps usage and body dissatisfaction and disordered eating, especially for muscularity dissatisfaction and muscularity-oriented disordered eating in non-Western contexts. Thus, this study aimed to evaluate the associations between gay dating apps usage, body image inflexibility, body dissatisfaction, and disordered eating with the inclusion of both body fat and muscularity dissatisfaction and both thinness-and muscularity-oriented disordered eating in a sample of Chinese young gay men. A total of 247 Chinese young gay men (mean age: 21.92 ± 2.74 years) were recruited. Gay dating apps usage, body fat dissatisfaction, muscularity dissatisfaction, body image inflexibility, and thinness-and muscularity-oriented disordered eating were evaluated. Pearson correlation and mediation analyses were conducted. Gay dating apps usage was positively correlated with body fat dissatisfaction (r = .20, p = .002), muscularity dissatisfaction (r = .17, p = .006), thinness-oriented disordered eating (r = .21, p < .001), and muscularity-oriented disordered eating (r = .29, p < .001), and these relationships could be mediated by body image inflexibility. Findings support technologically-informed prevention and intervention strategies for eating and body image disturbances in gay men in the Chinese context.

Internalized Homophobia, Body Dissatisfaction, Psychological Distress, and Nonsuicidal Self-Injury Among Young Sexual Minority Men in China.

Purpose: Sexual minority men (SMM) have been shown to be at high risk of nonsuicidal self-injury (NSSI). Internalized homophobia, body dissatisfaction, and psychological distress have been found to be related to NSSI among SMM, but few studies have focused on the mechanisms underlying these associations. Thus, the current study was conducted to examine the association between internalized homophobia and NSSI, and whether body dissatisfaction and psychological distress mediate this relationship among young SMM in China. Methods: In total, 264 young SMM (mean age, 22.00 ± 2.86 years) in Henan Province, China, participated in the study. A set of questionnaires were used to assess participants' internalized homophobia, body fat dissatisfaction, muscularity dissatisfaction, psychological distress, and NSSI. Correlation and mediation analyses were used to examine the data. Results: Internalized homophobia correlated positively with NSSI (r = 0.24, p < 0.001) among young SMM in China. This relationship was partly mediated by body fat dissatisfaction, muscularity dissatisfaction, and psychological distress. Conclusion: The study findings suggest that internalized homophobia is a risk factor for NSSI among young SMM in China, and that body fat and muscle dissatisfaction and psychological distress underlie the association between internalized homophobia and NSSI. In developing interventions targeting NSSI among SMM, the findings of the current study should be considered to improve intervention outcomes.

Body dissatisfaction and non-suicidal self-injury among Chinese young adults: a moderated mediation analysis.

OBJECTIVE: Extensive evidence from Western societies supports the role for body dissatisfaction in the etiological models of non-suicidal self-injury (NSSI). However, research of the underlying mechanisms of this relationship has been limited, especially in China. Therefore, the aim of this study was to examine the association between body dissatisfaction and NSSI among college students in China. Possible mediating roles for psychological distress and disordered eating, as well as a moderating role for self-compassion, were also examined. METHODS: College students (n = 655, Mage = 20.32 years, SD = 1.02) were recruited from Henan province, China. Each participant completed questionnaires regarding body dissatisfaction, psychological distress, disordered eating, and self-compassion. RESULTS: A close to medium positive relationship between body dissatisfaction and NSSI was revealed with r = 0.24 (p < .001). The relationship was found to be fully mediated by psychological distress and disordered eating. The mediation role for disordered eating was found to be further moderated by self-compassion, suggesting that self-compassion acted as a buffer against the relationship between disordered eating and NSSI. CONCLUSION: These findings indicate that body dissatisfaction, psychological distress, disordered eating, and self-compassion may play important roles in Chinese young adults' NSSI. Researchers and practitioners need to pay closer attention to the underlying mechanisms of how body dissatisfaction links to NSSI to deepen the understanding of their linkage as well as to provide appropriate interventions. LEVEL OF EVIDENCE: Level V, cross-sectional descriptive study.

Validation of the inflexible eating questionnaire in a large sample of Chinese adolescents: psychometric properties and gender-related differential item functioning.

PURPOSE: The aim of this study was to provide preliminary psychometric evidence for the Chinese version of the Inflexible Eating Questionnaire (C-IEQ) among a large sample of Chinese adolescents. METHODS: For testing the psychometric properties of the C-IEQ, a total of 2241 (Mage = 13.91 years; 46.4% boys) adolescents from mainland China responded to the survey. Confirmatory factor analysis (CFA) was used to examine the factor structure of the C-IEQ. Measurement invariance by gender was examined by both multi-group CFA and differential item functioning (DIF). Convergent validity of the C-IEQ was assessed via examining the correlations between the C-IEQ scores and theoretically related constructs (e.g., orthorexia nervosa symptomatology, eating disorder symptomatology, and body image inflexibility). RESULTS: The unidimensional structure with correlated errors of the C-IEQ showed good model fit (χ2 = 1674.05, df = 44, p < 0.001; CFI = 0.93; TLI = 0.91; RMSEA = 0.13; SRMR = 0.06). The C-IEQ had an adequate internal consistency (α = 0.89) and demonstrated strong measurement invariance across genders. Moreover, the scores of the C-IEQ showed significant correlations with theoretically correlated constructs: orthorexia nervosa symptomatology (girls; r = 0.53 p < 0.001, boys; r = 0.45 p < 0.001), eating disorder symptomatology (girls; r = 0.32 p < 0.001, boys; r = 0.25 p < 0.001) body image inflexibility (girls; r = 0.41 p < 0.001, boys; r = 0.36 p < 0.001), suggesting good convergent validity of the C-IEQ. CONCLUSION: The C-IEQ showed good psychometric properties in a sample of Chinese adolescents and can be used in future studies to assess eating-specific psychological inflexibility among Chinese adolescents. LEVEL OF EVIDENCE: Level V, cross-sectional descriptive study.