Intentional and unintentional injuries across health regions in Alberta, Canada: an implication for policy

The growing practice of including intentional injuries (suicide and interpersonal violence) under the injury control umbrella has produced some controversy. The present study was designed to determine whether or not there might be an empirical basis for this initiative from an ecological point of view by examining the associations among unintentional and intentional injuries across 17 geographically defined health regions. The study was set in the Province of Alberta, Canada, where health services were delivered to a population of 2.96 million persons in 1999 through 17 regional health authorities. The results of a principal components analysis showed that nearly all causes of injury-hospitalization loaded on a single factor. It was not possible to produce separate factors for intentional and unintentional injuries. The strong intercorrelation among all measures suggests that there is an empirical basis for the view that intentional and unintentional injuries belong under the same conceptual umbrella, at least at the ecological level.     

Context effects in forensic science: a review and application of the science of science to crime laboratory practice in the United States.

This article discusses the phenomenon of "context effects" by reviewing the findings and practices of a range of scientific fields, including astronomy, physics, biology, medicine, and especially the relevant research and theory from psychology. Context information, such as expectations about what one is supposed to see or conclude, has been found to have a small but relentless impact on human perception, judgment, and decision-making. The article then considers the vulnerability of forensic science practice to context effects, and concludes by suggesting that forensic science adopt practices familiar in other fields of scientific work, in particular blind or double-blind testing and also the use of evidence line-ups.     

Same and Other: Interdependency Between Participation in Same- and Other-Sex Friendships

Linear and curvilinear associations between experiences in the same- and other-sex peer groups and the protective functions of friendship with an other-sex peer for early adolescents without a same-sex friend were examined in a sample of 231 fifth, sixth, and seventh grade girls and boys. Findings indicate that (a) at the level of the individual, early adolescent girls and, to a much smaller extent, early adolescent boys show a preference for same-sex peers; (b) this unilateral difference in expansiveness accounts for differences in participation rates in same -and other-sex friendships; (c) children of both sexes who are either very popular or very unpopular are more likely than other children to have other-sex friends; and (d) among children without a same-sex friend, having an other-sex friend is linked to higher levels of perceived well-being for boys and lower levels of well-being for girls. Each of these results is discussed according to our understanding of how the same- and other-sex peer systems function as a system to affect development in early adolescence.     

The psychological impact of stalking on female undergraduates.

This study examined the psychological impact of stalking upon female undergraduates, a population previously determined to experience a surprising stalking prevalence rate. Despite common understanding that stalking has deleterious effects, there have been no previous efforts to systematically assess them with standardized measures. Thirty-six female stalking victims were compared with 43 females who had been harassed and 48 controls. Psychological impact was assessed with the Posttraumatic Stress Disorder Scale, the Symptom Checklist-90-R, and the Self-Report Interpersonal Trust Scale. Stalked subjects endorsed significantly more PTSD symptoms and with greater severity than the harassed or control subjects. Stalked subjects also had significantly higher scores on several subscales of the SCL-90, and had significantly higher positive symptom totals and distress indices.