Growing up in socioeconomic disadvantage increases risk of peer bullying at school. Both socioeconomic status and involvement in bullying are predictive of a range of adverse developmental outcomes. However, neither (a) the mechanisms whereby disadvantage increases bullying risk nor (b) the developmental outcomes for which bullying may mediate…

In this study the pattern of temporal variation in innovation rates is examined in the context of Western IQ measures in which historical genotypic gains and losses along with the Flynn effect are considered. It is found that two alternative genotypic IQ estimates based on an increase in IQ from 1455 to 1850 followed by a decrease from 1850 to the…

Prisonization (as measured by number of prior incarcerations) and concurrent instrumental offending (as measured by contemporaneous kidnapping, rape, robbery, and burglary offenses) were found to interact in 160 multiple-homicide offenders and 494 single-homicide offenders. Controlling for age, gender, race, criminal history, prior incarcerations,…

We examine what types of violent offenses tend to be planned using self-report data from a nationally representative sample of state and federal inmates. We find mixed support for the idea that predatory offenses are more likely to be planned than dispute-related offenses. As expected, robbery offenders are much more likely to report that they…

Intimate partner violence (IPV) constitutes the majority of assaults against women in the United States, and greater than one third of female homicide victims are murdered by an intimate partner. In a small percentage of cases, battered women kill their abusers, and evidence of battering and its effects may be used to support a plea of…

The purpose of this study was to evaluate whether psychological symptoms, negative social events, treatment-related information, and degree of insight into one's illness predicted current homicidality in a population of clients with psychosis (N = 170). Multiple regression analyses revealed that homicidality can be reliably predicted when clients…

The Danger Assessment (DA) is an instrument designed to assess the likelihood of lethality or near lethality occurring in a case of intimate partner violence. This article describes the development, psychometric validation, and suggestions for use of the DA. An 11-city study of intimate partner femicide used multivariate analysis to test the…

Analysis of 1980 state-level data found that white suicide rates were associated with variables indicating social instability, while American Indian suicide rates were negatively related to wealth and urbanization. Both white and Indian homicide rates were related to social instability; Indian rates were also negatively related to unemployment.…

This study examines a group of 21 imprisoned males, convicted of murder whilst aged 18 years or less, and compares them on a range of psychosocial variables to 21 convicted non-violent burglars. Results showed that lower socio-economic status, harsh parenting, and exclusion from school were significantly more common for murderers. Confirms that…

Tested hypotheses concerning the relationship between alcohol and homicide from four major theoretical perspectives; specific predictions on the causes of types of homicide were also derived. Findings revealed that alcohol consumption rates change the way important predictors, such as poverty and deterrence, are related to specific types of…

In this prospective study, the authors predicted violence and homicide in 3 representative school samples (N = 1,517). Participants were part of a longitudinal, multiple cohort study on the development of delinquency in boys from late childhood to early adulthood in Pittsburgh, Pennsylvania. Thirty-three participants were convicted of homicide,…

On May 21, 1998 Kipland Kinkel entered Thurston High School in Springfield, Oregon, gunned down two students and injured scores more, after murdering his parents the night before. There is a dearth of research focused on the effects of such violence in school settings where the perpetrator is a peer of his victims. We do not know if, how, or under…

This study first examined a model of the predictors and mediators of both suicidal ideation and violent ideation, particularly since both types of ideation were highly correlated (r = 0.55) among our young adolescent participants. The variables in the model were those identified in media accounts of the histories of the 10 high-profile school…