A Model of Contagion Through Competition in the Aggressive Behaviors of Elementary School Students

This article extends the work of Kellam, Ling, Merisca, Brown and Ialongo (1998) by applying a mathematical model of competition between children to peer contagion in the aggressive behaviors of elementary school students. Nonlinearity in the relationship between group aggression and individual aggression at 2-year follow-up is present. Consistent with the findings of Kellam et al. (1998), hierarchical linear modeling indicates that the relationship is statistically significant for those students whose initial parental ratings of aggressive behavior were above the sample median. In the context of competition between students, the behavior of initially aggressive students may be negatively reinforced. Lowering aggression in the school environment may therefore be the most effective way to lower the level of these students aggressive behavior.     

Hope and the Interpersonal‐Psychological Theory of Suicidal Behavior: Replication and Extension of Prior Findings

The interpersonal‐psychological theory of suicidal behavior (IPTS; Joiner, 2005) posits that suicidal behavior occurs when an individual has a desire for death (due to the combination of perceived burdensomeness and thwarted belongingness) in addition to an acquired capacity for suicide, which is present when the individual has a low fear of death and high pain tolerance. Previous research has demonstrated an expected negative relation between trait hope and perceived burdensomeness and thwarted belongingness, as well as a more perplexing finding that hope is positively associated with the acquired capability. In a sample of 230 college students, measures of the three components of the IPTS were administered, along with measures of hope, depression, and painful and/or provocative events. Hierarchical regression analyses replicated the previously found associations between hope and burdensomeness and belongingness while controlling for depression and demographic variables. The positive association between hope and acquired capacity was also replicated, but a mediation analysis demonstrated that the effect was statistically accounted for by distress tolerance. The results further support the incremental validity of hope as a consideration in suicide risk assessments and suggest that hope may serve as a protective factor with respect to suicidal desire.     

Acquired Capability for Suicide,Pain Tolerance,and Fearlessness of Pain—Validation of the Pain Tolerance Scale of the German Capability for Suicide Questionnaire

The interpersonal theory of suicide (Joiner, 2005) postulates that for a serious suicide attempt, one has to possess the acquired capability to commit suicide. Acquired capability includes higher pain tolerance, which is further assumed to comprise both an elevated physical pain tolerance and fearlessness of pain. Recently, the German Capability for Suicide Questionnaire (GCSQ) was validated. The aim of this study is further validation of the GCSQ's Pain Tolerance scale by investigating the scale's association with objective pain tolerance and fearlessness of pain in two undergraduate samples (N = 81; N = 76). Both associations were found indicating a strong criterion validity of the Pain Tolerance scale.