The present research hypothesized that negative life events are related to suicide ideation through the chain mediation of negative affect and life satisfaction. A sample of 566 undergraduates completed questionnaires investigating suicidal ideation, negative life events, negative affect, and life satisfaction. The results indicated a significant chain mediation from negative life events to suicidal ideation through negative affect and life satisfaction. The present study showed that negative affect and life satisfaction are important mediators of the association between negative life events and suicidal ideation in undergraduates. Concerning suicide prevention among undergraduates, attention should be paid to negative affect and life satisfaction.

Background: There is a consensus that both nonsuicidal self-injury (NSSI) and suicidal ideation as risk factors for suicidal behavior have a strong connection. However, a lack of longitudinal information has limited the clarification of the concrete relationship between them.Aims: This study aimed to examine the specific mechanism between NSSI and suicidal ideation over time, during adolescence.Method: A longitudinal study was conducted with 193 Chinese adolescents. NSSI and suicidal ideations were examined over the course of a 1year followed-up, and three waves of data were collected.Results: The NSSI at time T1 significantly positively predicted suicidal ideation at time T2; Suicidal ideation at time T2 also significantly positively predicted NSSI at time T3.Limitations: Given that the small number of participants with suicidal ideation and NSSI, the findings of the study should be interpreted with caution and a lager sample is needed in the future.Conclusion: It was suggested that NSSI may occur before suicidal ideation, which in turn would strengthen NSSI, so interventions should be carried out from two aspects (behaviors and thoughts) to improve adolescents’ mental health.

Based on the cognitive model of suicide and broaden-and-build theory of gratitude, this study constructed a moderated mediation model to examine whether hopelessness mediated the relationship between brooding and Chinese college students’ suicidal ideation and whether this mediating process was moderated by gratitude, from the positive psychology perspective. A total of 1191 college students were investigated using four scales. The results were as follows: (1) Brooding significantly contributed to suicidal ideation; (2) Hopelessness played a mediating role in the relationship between brooding and suicidal ideation; and (3) Gratitude moderated the mediated path through hopelessness, such that this mediating effect was only significant in individuals with low gratitude. This study may shed light on how brooding influences Chinese college students’ suicidal ideation theoretically and on their prevention practically.

The dynamic changes over time in the relationships between impulsivity, interpersonal problems, and depression warrant further exploration. This study delves into the roles of impulsivity and interpersonal issues in the progression of adolescent depression over a year, using a sample of 271 Chinese adolescents (51.7% male, Mage = 12.60 ± 0.69). At three time points, impulsivity levels were assessed with the Chinese version of the Barratt Impulsiveness Scale-11, interpersonal problems with the Adolescent Self-Rating Life Events Check List, and depression with the Center for Epidemiologic Studies Depression Scale. Results revealed that both impulsivity and interpersonal problems serve as risk factors for depression, but the primary risk factor shifted over time. In early middle school stages, impulsivity was the predominant risk factor, while in later stages, interpersonal problems became the primary risk factor. These findings carry significant implications for directing prevention efforts and interventions for adolescent depression.

Individuals who with suicide behaviors pay more attention to negative signals than positive ones. However, it is unclear that whether this bias exists when suicide ideators perceive interpersonal stimuli (such as faces with emotion) and the underlying neural mechanism of the attention process. The present study aimed to examine the attentional bias toward emotional facial expressions by employing event-related potentials in a population with suicide ideation. Twenty-five undergraduates with suicide ideation (SI group) and sixteen undergraduates without suicide ideation (NSI group) participated in a modified dot-probe task. Compared to the NSI group, the SI group exhibited: (1) a longer mean reaction time to fearful faces; (2) a larger N1 component to fearful faces; (3) a larger N1 component to the location of sad faces, as well as to the opposite location of fearful faces and happy faces; and (4) a larger N1 component to the contralateral location of happy faces, whereas the NSI group elicited a larger N1 component to the ipsilateral location of happy faces. These results indicated that the SI group was more sensitive to negative emotions (fearful and sad faces) than positive emotions (happy faces), and the negative interpersonal stimuli in suicide ideators was processed at an early attention stage.