Carl G. Leukefeld

Personality Disorders as Extreme Variants of Common Personality Dimensions: Can the Five Factor Model Adequately Represent Psychopathy?

The present study examined Widiger and Lynams (1998) hypothesis that psychopathy can be represented using the Five-Factor Model (FFM) of personality. Participants in the study consisted of 481 21-22-year-old men and women who are part of an ongoing longitudinal study. Psychopathy was assessed by the degree of similarity between an individuals NEO-PI-R and an expert-generated FFM psychopathy prototype. The expert-based prototype supported the account of Widiger and Lynam (1998), as did the correlations between the NEO-PI-R Psychopathy Resemblance Index (PRI) and the individual personality dimensions. The PRI was also related in predicted ways to measures of antisocial behavior, drug use, and psychopathology. The results support the contention that psychopathy can be understood as an extreme variant of common dimensions of personality, and underscore the utility of a dimensional model of personality disorders.

Women, sex, and HIV: social and contextual factors, meta-analysis of published interventions, and implications for practice and research.

This article is focused on examining social and contextual factors related to HIV-risk behavior for women. Specifically, this article has three main purposes: to review the literature on selected social and contextual factors that contribute to the risk for the heterosexual transmission of HIV and AIDS, to review and conduct a meta-analysis of HIV-prevention interventions targeting adult heterosexual populations, and to suggest future directions for HIV-prevention intervention research and practice. Results suggest that the HIV-prevention interventions reviewed for this article had little impact on sexual risk behavior, that social and contextual factors are often minimally addressed, and that there was a large gap between research and the practice of HIV-prevention intervention.

A test of the four-factor model of impulsivity-related traits

Abstract In a recent article, Whiteside and Lynam [Person. Indiv. Diff. 30 (2001) 669] proposed a new model for understanding personality pathways to impulsive behavior. Their UPPS model maintains that there are four personality dimensions that are related differentially to impulsive behaviors: urgency, sensation seeking, (lack of) premeditation, and (lack of) perseverance. The purpose of the current study was to provide validation for this model and to test some of the specific hypotheses offered by Whiteside and Lynam. The sample used in this study consisted of 481 individuals who completed mailed surveys at age 20 and an in-depth laboratory protocol at age 21. Zero-order correlations and multiple regression analyses were used to examine the relations between the four personality traits and various forms of externalizing behaviors, several types of internalizing psychopathology, and intelligence. Results revealed that the four traits were differentially related to various behaviors and forms of psychopathology consistent with many of Whiteside and Lynams predictions. Therefore, the UPPS model does appear to offer a novel and useful way of understanding behaviors and forms of psychopathology considered to be characterized by some form of impulsivity.

Early Adolescent through Young Adult alcohol and marijuana use trajectories: Early predictors, young adult outcomes, and predictive utility

The present study takes a developmental approach to subgrouping and examines the trajectories of substance use from early adolescence through young adulthood among a community sample of 481 individuals. The patterns of use were examined, subgroups were identified separately for men and women and for alcohol and marijuana, and psychosocial predictors and psychopathology outcomes that differentiated the groups were identified. The results revealed three substantially overlapping subgroups for both alcohol and marijuana: early onset, late onset, and nonuser. Although the general patterns of which dependent variables were related to group were similar for alcohol and marijuana, a closer examination revealed important subgroup differences. For alcohol use, the early-onset group was more dysfunctional in terms of predictors and outcomes whereas the late-onset and nonuser groups were better adjusted. In contrast, for marijuana, the early- and late-onset groups were both more dysfunctional than the nonuser group. In a final analysis, we examined the predictive utility of our developmental approach to subgrouping compared to a traditional, static approach.

Project DARE: No Effects at 10-Year Follow-Up

The present study examined the impact of Project DARE (Drug Abuse Resistance Education), a widespread drug-prevention program, 10 years after administration. A total of 1,002 individuals who in 6th grade had either received DARE or a standard drug-education curriculum, were reevaluated at age 20. Few differences were found between the 2 groups in terms of actual drug use, drug attitudes, or self-esteem, and in no case did the DARE group have a more successful outcome than the comparison group. Possible reasons why DARE remains so popular, despite the lack of documented efficacy, are offered.

Motivation as a Predictor of Therapeutic Engagement in Mandated Residential Substance Abuse Treatment

Studies of community-based substance abuse treatment indicate that motivation for treatment is critical for retaining clients in the program and for their becoming therapeutically engaged in the recovery process. Relatively little work, however, has examined the effect of motivation on therapeutic engagement in criminal justice settings. Baseline and during-treatment data were collected prospectively from 419 probationers remanded to a 6-month modified therapeutic community. Findings showed that desire for help and treatment readiness were associated with indicators of therapeutic engagement even after statistically controlling for additional factors that could have confounded these relationships. Targeted readiness and induction interventions are therefore recommended for offenders with low motivation who are remanded to treatment in correctional settings.

Relation Between Childhood Disruptive Behavior Disorders and Substance Use and Dependence Symptoms in Young Adulthood: Individuals With Symptoms of Attention-Deficit/Hyperactivity Disorder and Conduct Disorder Are Uniquely at Risk

Most prior literature examining the relations among attention-deficit/hyperactivity disorder (ADHD), conduct disorder (CD), and substance use and abuse suggests that CD fully account for the ADHD-substance abuse relation. This study sought to test an alternate theory that individuals with symptoms of both ADHD and CD are at a special risk for substance abuse. Relations between childhood ADHD and CD symptoms, and young adult tobacco, alcohol, marijuana, and hard drug use and dependence symptoms, were examined in a sample of 481 young adults. ADHD and CD symptoms interacted to predict marijuana dependence symptoms and hard drug use and dependence symptoms, such that individuals with high levels of both ADHD and CD had the highest levels of these outcomes.

Stalking as a variant of intimate violence: implications from a young adult sample.

There is a limited but growing literature which suggests that stalking is a variant of intimate violence. The purpose of this study was to examine physical, psychological, and stalking victimization and perpetration among males and females. Alcohol use was also examined. The sample was 46 male and 84 female undergraduate students who reported stalking victimization and perpetration after a difficult breakup, and psychological and physical victimization and perpetration during that specific relationship. Overall, 27% of the sample study was classified into the stalking victimization group, which is consistent with other stalking prevalence rates among college samples. For females, stalking victimization was significantly associated with physical and psychological abuse victimization. For males, stalking victimization was significantly associated with psychological abuse victimization. However, there was also a strong significant reciprocal relationship of stalking and psychological abuse victimization and perpetration, especially for males. Also, alcohol use was significantly associated with victimization and perpetration of stalking and psychological abuse for males. The data from this study contribute to the hypothesis that stalking is a variant of or extension of intimate violence, especially for females. Implications and recommendations for future research are discussed.

Substance Use, Health, and Mental Health: Problems and Service Utilization Among Incarcerated Women

This article profiles self-reported substance use, health, and mental health problems among a sample of incarcerated women in Kentucky as well as lifetime service utilization. Findings indicate that a high percentage of women reported use of alcohol, cocaine, and multiple substances during the month before incarceration. In addition, participants reported common health problems such as dental, female reproductive, physical injuries, and mental health problems including depression and anxiety. Participants reported moderate use of emergency room and mental health treatment but limited substance abuse treatment utilization. Implications for criminal justice programs and linkages with community-based aftercare services for women are recommended based on findings that health and mental health problems are associated with service utilization before incarceration.

A Systematic Review of Recent Literature on Religiosity and Substance Use

This paper contains a systematic review of articles about the relationship between religiosity/spirituality and alcohol and drug use that were published between 1997 and 2006. Summaries of methodological characteristics (e.g., study design, sample size and composition, specific dimensions of religiosity, and substances investigated) and general findings of 105 studies provide an overview of the field. The association between religiosity/spirituality and reduced risk of substance use is well established, but a well defined body of knowledge on this relationship has been slow to emerge. The development of more sophisticated instrumentation to measure religiosity and spirituality, the investigation of samples that include users of major drugs of abuse, and the integration of the study of religion and drug use into the broader literature on religion and health can help the field build upon the considerable work that has been published.