Trajectories of Suicide Ideation,Nonsuicidal Self‐Injury,and Suicide Attempts in a Nonclinical Sample of Military Personnel and Veterans

Nonsuicidal self‐injury (NSSI) is a risk factor for suicide attempts, but little is known about NSSI among military personnel and veterans, or about the temporal sequencing of NSSI relative to suicide ideation and attempts. This study evaluates trajectories of suicide ideation, NSSI, and suicide attempts in a sample of 422 military personnel and veterans. Of those with a history of NSSI, 77% also experienced suicide ideation. Suicide ideation emerged before NSSI (67%) more often than the reverse (17%). Of those with a history of suicide attempt, 41% also engaged in NSSI. NSSI emerged prior to the first suicide attempt (91%) more often than the reverse (9%). The length of time from suicide ideation to suicide attempt was longer for those who first engaged in NSSI (median = 3.5 years) compared with those who did not engage in NSSI (median = 0.0 years), Wald χ²(1) = 11.985, p = .002. Age of onset was earlier for participants reporting NSSI only compared with those reporting both NSSI and suicide attempts (16.71 vs. 22.08 years), F(1, 45) = 4.149, p = .048. NSSI may serve as a “stepping stone” from suicide ideation to attempts for 41% of those who attempt suicide.     

错失恐惧对大学生社交网络成瘾的影响:社交网络整合性使用与社交网络支持的中介作用

错失恐惧是社交网络成瘾的风险因素，但其中的作用机制并不清楚。本研究采用错失恐惧问卷、社交网络整合性使用量表、社交网络支持量表和中文社交网络成瘾量表，调查了重庆市三所高校的493名大一至大三的学生，探讨错失恐惧影响社交网络成瘾的机制。结果发现：（1）错失恐惧显著预测社交网络成瘾，错失恐惧水平越高，个体社交网络成瘾水平越高。（2）社交网络整合性使用在错失恐惧和社交网络成瘾之间起独立中介作用。（3）社交网络支持在错失恐惧和社交网络成瘾之间起独立中介作用。（4）社交网络整合性使用和社交网络支持在错失恐惧和社交网络成瘾之间起链式中介作用。研究结果表明，满足大学生基本心理需要、降低社交网络使用程度、提升现实社会支持可以有效预防社交网络成瘾。     

Mental Disorders,Comorbidity, and Pre‐enlistment Suicidal Behavior Among New Soldiers in the U.S. Army: Results from the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS)

We examined the associations between mental disorders and suicidal behavior (ideation, plans, and attempts) among new soldiers using data from the New Soldier Study (NSS) component of the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS; N = 38,507). Most new soldiers with a pre‐enlistment history of suicide attempt reported a prior mental disorder (59.0%). Each disorder examined was associated with increased odds of suicidal behavior (ORs = 2.6–8.6). Only PTSD and disorders characterized by irritability and impulsive/aggressive behavior (i.e., bipolar disorder, conduct disorder, oppositional defiant disorder, and attention‐deficit/hyperactivity disorder) predicted unplanned attempts among ideators. Mental disorders are important predictors of pre‐enlistment suicidal behavior among new soldiers and should figure prominently in suicide screening and prevention efforts.     

Adolescents' Attitudes About the Role of Mental Illness in Suicide,and Their Association with Suicide Risk

We examined teenagers' attitudes about the role of mental illness in suicidal behavior and the relationship between these attitudes and suicide risk. Serious suicidal ideation or behavior and associated risk factors (gender, depression, substance problems, and first‐hand experience with a suicidal peer) were assessed in 2,419 students at six New York high schools. Less than one fifth of students thought that mental illness was a major contributor to suicide. Suicidal adolescents and those at risk were less likely than their nonsuicidal and low‐risk counterparts to associate suicide with mental illness. Our findings contribute to the debate over whether accepting attitudes toward suicide increase suicide risk.     

Reasons for Attempting Suicide among a Community Sample of Adolescents

The motives of suicide attempts among a community sample of 99 U.S. high school students were explored. Participants completed an in‐depth computer‐assisted self interview about their most recent attempts as well as additional psychosocial measures. Results indicated that nearly 75% of the adolescents engaged in suicide attempts for reasons other than killing themselves and that depressive symptoms and premeditation prior to the attempt were significantly associated with increased risk for engaging in the attempts with death as a clear motive. Linking motive for an attempt (death, interpersonal communication, emotion regulation) and treatment approach may improve prevention of subsequent attempts and completed suicides.     

Mood,Anxiety, and Substance‐Use Disorders and Suicide Risk in a Military Population Cohort

There are meager prospective data from nonclinical samples on the link between anxiety disorders and suicide or the extent to which the association varies over time. We examined these issues in a cohort of 309,861 U.S. Air Force service members, with 227 suicides over follow‐up. Mental disorder diagnoses including anxiety, mood, and substance‐use disorders (SUD) were based on treatment encounters. Risk for suicide associated with anxiety disorders were lower compared with mood disorders and similar to SUD. Moreover, the associations between mood and anxiety disorders with suicide were greatest within a year of treatment presentation.     

Longitudinal Associations between Violence and Suicidality from Adolescence into Adulthood

The link between violence and suicide is well documented. Previous studies, however, largely rely on cross‐sectional designs or only consider violence as an antecedent of suicide. The purpose of the current study was to investigate the longitudinal relationship between violence and suicide from adolescence into young adulthood. Data were derived from Wave II (1995–1996), Wave III (2001–2002), and Wave IV (2007–2008) of the National Longitudinal Study of Adolescent Health (N = 8,966). We tested (2011–2013) a series of path analysis models in Mplus to determine the longitudinal associations between violence and suicidality. Results from the path analyses indicated that violence and suicidality mutually affect each other from adolescence into young adulthood. We found some evidence that the association between suicidality and violence was stronger for males compared to females, particularly in early and young adulthood. The current study confirms previous findings by demonstrating that violence is a risk factor for future suicide. We also extended the previous literature by demonstrating that a history of suicidality is associated with future risk for violence. Our findings highlight the importance of further integrating prevention efforts to reduce violence and suicidality during adolescence and early/young adulthood.     

Depressive Symptoms and Health‐Related Risk‐Taking in Adolescence

This study investigated the relation between symptoms and a variety of health‐related risk‐taking behaviors during adolescence. A survey of 20,745 adolescents from the National Longitudinal Study of Adolescent Health provided data for analysis. Adolescents who reported more depressive symptoms were found to wear seatbelts less often, wear bike‐helmets less often, and drive while drunk more frequently. Depressive symptoms did not correlate with reported condom use. The found relations were all mediated by reported levels of hopelessness. Reported levels of anhedonia and suicidality also mediated some of the found relations. Therefore, adolescents experiencing depressive symptoms, especially those reporting hopelessness, should be considered at jeopardy for a variety of health‐related risk‐taking behaviors.