Objective: To examine the effects of bullying victimization on adolescent depression and the mechanisms by which ruminative thinking and sleep quality play a role.
Methods: A convenience sampling method was employed. The Delaware Bullying Victimization Scale-Students (DBVS-S), Center for Epidemiologic Studies Depression Scale (CES-D), Ruminative Responses Scale-Chinese version (RRS-CV), and Pittsburgh Sleep Quality Index (PSQI) were used to survey 1 105 students across three junior high schools in Hebei Province and Shandong Province, and correlation analyses as well as mediation effect tests were conducted on the data.
Results: (1) The four variables including bullying victimization, rumination, sleep quality, and depression were all significantly positively correlated with each other (p<0.001). (2) The mediation effect test showed that all three paths were valid, with a separate mediation effect value of 0.251 for rumination; a separate mediation effect value of 0.056 for sleep quality; and a chained mediation effect value of 0.088 for rumination→sleep quality. The mediation effects of the three paths accounted for 41.55%, 9.28%, and 14.56% of the total effect, respectively.
Conclusion: Bullying victimization can not only directly affect adolescent depression, but also indirectly affect adolescent depression through the chain-mediated effect of rumination and sleep quality.

Objective: To explore the influencing factors of psychological crisis risk in college students and to construct and validate a crisis risk prediction model.
Methods: Using 1 879 college students from initial interviews enrolled in the Psychological Centre of Zhejiang University from September 2019 to April 2021 as research subjects, univariate logistic regression and Lasso regression were used to screen characteristic variables of crisis risk. A random sampling method was used to divide the subject into a training set and a validation set at a ratio of 7:3. A multi-factor logistic regression analysis model was constructed in the training set, and the discriminative ability of this model was verified separately in the training and validation sets.
Results: In this study, there were 255 (13.4%) cases of college students at risk of crisis. Univariate logistic regression and Lasso regression were used to screen out six relevant variables of crisis risk. The results of the multi-factorial regression analysis showed that ‘interpersonal relationships’(p=0.007),‘ college’(p<0.05), ‘student status’(p≤0.001), ‘suicidal thoughts’(p<0.001), and ‘substance use’(p=0.005) were independent risk factors for crisis risk. The validation analysis results indicated that the predictive model had good discrimination, with an area under the curve (AUC) of 0.834.
Conclusion: The risk prediction model constructed in this study has good discriminative ability and can be used to guide the early identification and timely intervention of high-risk students with crisis risk in mental health work in colleges.

Objective: This study explores the mechanism of parents’ psychological flexibility on children’s problem behaviors, and investigates the roles of parental psychological flexibility and teacher-child relationship within it.
Methods: Two rounds of a multi-time-point approach were adopted to conduct a questionnaire survey among 383 preschool children. In the first round, parents of the preschoolers completed the Parents’ Psychological Flexibility Scale and Parental Psychological Flexibility Scale. In the second round, teachers of the preschoolers completed the Children’s Problem Behavior Scale and the Teacher-Child Relationship Scale. Descriptive statistics and correlation analysis were performed on the collected data, and a regulated mediation model test was performed using the macro program PROCESS of SPSS.
Results: Parents’ psychological flexibility is significantly negatively correlated with children’s problem behaviors. Parental psychological flexibility plays a partial mediating role in the relationship between parents’ psychological flexibility and children’s problem behaviors. Teacher-child relationship not only regulate the influence of parental psychological flexibility on children’s problem behaviors but also regulate the mediating role of parents’ psychological flexibility on children’s problem behaviors through parental psychological flexibility.
Conclusion: Parents’ psychological flexibility can not only directly affect children’s problem behaviors, but also indirectly affect children’s problem behaviors through parental psychological flexibility, and the teacher-child relationship plays a moderating role in the second half of the mediation model.

Objective: To explore the differences in alexithymia between adolescent patients with depressive disorders who have attempted suicide and those who have not, and its correlation with the severity of depression.
Methods: From 2019 to 2021, 40 adolescents with depressive disorders who had suicide attempts (suicide attempt group), 68 adolescents with depressive disorders who had no suicide attempts (non-suicide attempt group), and 23 healthy controls matched by gender, age, and years of education (healthy control group) were included in the study. The 17-item Hamilton Depression Inventory (HAMD-17), the 26-item Toronto Alexithymia Scale (TAS-26), and the Childhood Trauma Questionnaire (CTQ) were used to assess the three groups.
Results: Statistically significant differences were found among the suicide attempt group, the non-suicide attempt group, and the healthy control group in TAS-26 total score and some factor scores (ability to describe emotions, ability to recognize and differentiate emotions and bodily sensations, and extraversion thinking). Both groups of depressive disorder participants scored higher than the control group on TAS-26 total scores and some factor scores (ability to describe emotions, ability to recognize and differentiate emotions and bodily sensations, and extraversion thinking). Additionally, the suicide attempt group scored higher on extraversion thinking compared to the non-suicide attempt group. And there was no significant difference in childhood trauma among the three groups. In the suicide attempt group, there was a significant positive correlation between extraversion thinking scores in the TAS-26 and emotional neglect subscale scores in the CTQ (r=0.361, p=0.028). Similarly, in the non-suicide attempt group, adolescent extraversion thinking scores were also positively correlated with emotional neglect subscale scores in the CTQ (r=0.260, p=0.021).
Conclusion: Alexithymia disorders may increase the risk of suicide among adolescents with depressive disorders, and childhood trauma may not have a sufficiently clear effect on predicting suicide attempts in adolescents with depressive disorders.

Partner choice refers to the behavior in which individuals choose or reject forming partnerships with other individuals based on the potential benefits these others may provide. When there is a possibility of partner choice in the initial relationship, a dynamic network relationship is formed. In dynamic networks, old relationships may dissolve while new ones form, thereby promoting the occurrence and continuity of cooperative behaviors. When an individual makes a partner choice, bidirectional processes are usually involved, namely, the enhancement of their own attractiveness and the evaluation of the quality of potential partners, to attract higher-quality potential partners. It becomes difficult to establish new cooperative relationships if obstacles are encountered in this process. Therefore, it is necessary to further research the interaction between the individual partner choice and cooperative behavior in different cultural backgrounds and different types of social dilemmas in the future. At the same time, enhanching the ecological validity of research in this field is essential.

Non-suicidal self-injury (NSSI) is an important public health problem, including direct and indirect self-harm. NSSI is closely related to suicidal behaviors, and it has become an important issue affecting the physical health and life safety of adolescents. In recent years, the incidence of NSSI in adolescents in China has shown an increasing trend, warranting attention. NSSI is a dangerous and complex behavior characterized by various forms, addictive tendencies, and covert features, and its cause is closely related to individual emotional regulation, personality factors, and other psychological characteristics. Therefore, this article reviews the research progress on the psychosocial mechanism, evaluation, and psychological interventions of NSSI in adolescents, aiming to provide ideas for the research and treatment of NSSI in adolescents.

Emotional dysregulation is one of the core symptoms of depression, and previous studies have mainly focused on mood regulation strategies in depression. While an expanding cohort acknowledges the depression spectrum perspective, insufficient focus persists on subthreshold depressive individuals, who bear a heightened propensity for depression onset. Research regarding the emotional regulation strategies and neural mechanisms among this demographic remains inadequately addressed. The article is based on Gross’s five-stage model of emotion regulation, introducing the emotional regulation strategies for subthreshold depression and the cognitive neural mechanisms underlying their use. The aim is to deepen the understanding and application of emotion regulation strategies, and to provide a basis for the early identification, diagnosis, intervention, and prevention of depression.

Dialectical behavior therapy (DBT) is an effective method of psychotherapy which includes individual therapy, group therapy, and other forms. This study presents a patient with bulimia nervosa who participated in a 12-session, 6-stage group skills training within the framework of DBT. Through training in the four core skills of mindfulness, emotion regulation, distress tolerance, and interpersonal communication, the patient learned to better understand herself, regulate emotions, tolerate life’s inevitable distress, and build good interpersonal relationships, thereby improving maladaptive behaviors. After treatment, patients showed significant improvements in eating related symptoms, anxiety, and depression, with both therapist and patient evaluating the treatment effect as positive. The study suggests the potential of DBT in improving bulimia nervosa and provides a reference for the subsequent use of this approach in the treatment of other mental disorders.

In recent years, non-suicidal self-injury (NSSI) has garnered widespread attention globally. In 2013, non-suicidal self-injury disorder (NSSI-D) was included as a clinical diagnosis of mental disorder in the fifth edition of the American Diagnostic and Statistical Manual of Mental Disorders (DSM-5). A retrospective examination of both Eastern and Western histories reveals that self-injury, influenced by various factors such as religion, aesthetic ideals, and social trends, was once accepted by the general public in different cultural and historical contexts. Clinical medicine only began to focus on NSSI behaviors at the beginning of the last century. Today, with ongoing research into this behavior, more scientific diagnostic criteria and intervention methods for NSSI have been established. Based on this review of the history of NSSI behaviors, this paper summarizes the current state of clinical practice regarding NSSI both domestically and internationally, aiming to provide new insights for the future refinement of NSSI prevention and intervention practices.