Resistance of degraded hair shafts to contaminant DNA

We have investigated the susceptibility of degraded human hair shaft samples to contamination by exogenous sources of DNA, including blood, saliva, skin cells, and purified DNA. The results indicate that on the whole hair shafts are either largely resistant to penetration by contaminant DNA, or extremely easy to successfully decontaminate. This pertains to samples that are both morphologically and biochemically degraded. We suggest that this resistance to the incorporation of contaminant DNA relates to the hydrophobic and impermeable nature of the keratin structures forming the hair shaft. Therefore, hair samples represent an important and underestimated source of DNA in both forensic and ancient DNA studies.     

Routine Activity Theory and Sexual Deviance Among Male College Students

Much research on sexual deviance on university and college campuses is limited by its narrow focus on group affiliation. In this study, it is argued that prior deviance and opportunity serve as more robust predictor variables of sexual deviance. Using a sample of 304 male college students from four universities within the Ohio Valley Conference, this paper utilizes Analytic moment structures (AMOS) analyses to examine the relationship between prior deviance and sexual deviance. Results support the assumption that sexual aggression is significantly (β=.17) mediated or accounted for by opportunity. Overall, the relationships among variables lend support to the argument that alternative explanations of sexual deviance may provide a better understanding of such a complex societal problem.

Nonviolent offenders' and college students' attachment and social support behaviors: implications for counseling

This study examines the relationships between adult attachment orientations and the ability to seek social support as factors in mediating behavior. Data were collected on non violent offenders (n = 57) and college students (n = 89). The results indicated the non-normative group of nonviolent offenders reported being more securely attached and having more satisfaction with their social supports than the normative group of college students. Fewer college students reported being securely attached than the nonviolent offenders but had a larger number of social supports. In the insecure categories, nonviolent offenders reported being more dismissively attached whereas college students reported being preoccupied in their attachment orientation. The study suggests that attachment and social-support-seeking behaviors across different populations may be potential factors in designing counseling services that are used for risk classification and needs assessment.     

Advances and future directions in the study of children's neurobiological responses to trauma and violence exposure

One of the most exciting developments to emerge from the field in the past 20 years is the increasing attention to neurobiological responses to violence and trauma exposure. Although researchers have yet to identify a consensual pattern of neurobiological response to violence and trauma exposure, it does appear that some type of alteration in the hypothalamic pituitary adrenal (HPA) axis is likely. This article briefly reviews the multiple moderating factors that help account for the divergent patterns in HPA function as well as methodological advances that will continue to improve the assessment of HPA function in youth exposed to violence and trauma.     

Citizen-Centered Collaborative Public Management

Civic engagement and collaborative public management are concepts that are defined broadly, making theoretical explication challenging and practical application of empirical research difficult. In this article, the authors adopt definitions of civic engagement and collaborative public management that are centered on the citizen and the potential for active citizenship. Following a historical review of civic engagement in the United States, a conceptual model of five approaches to civic engagement is offered. Citizen-centered collaborative public management is enhanced through these approaches. The authors suggest the need for further empirical research on collaborative public management that is grounded in citizenship action.