Examining the impact of gender on the factor structure of the Psychopathic Personality Inventory-Revised

Research on the factor structure of psychopathy has yielded mixed results, supporting anywhere from one to three factors. Additionally, most of this research has used all-male samples, and the possibility of structural invariance across gender has not been examined. Using a mixed-gender sample of 360 undergraduates, the factor structure of the Psychopathic Personality Inventory-Revised was examined using confirmatory factor analysis and multiple group analysis. One-, two-, and three-factor models were tested and compared with each other. When males and females were combined, none of the three models provided adequate fit to the data. Multiple group analyses revealed partial invariance across gender for all three models. Model comparison criteria supported use of both the one- and two-factor models, taking into account variable factor structure across gender. The importance of considering structural differences based on biological sex when assessing psychopathic traits is discussed.     

The structure of executive function in 3-year-olds

Although the structure of executive function (EF) during adulthood is characterized by both unity and diversity, recent evidence suggests that preschool EF may be best described by a single factor. The latent structure of EF was examined in 228 3-year-olds using confirmatory factor analysis. Children completed a battery of executive tasks that differed in format and response requirements and in putative working memory and inhibitory control demands. Tasks appeared to be age appropriate, with adequate sensitivity across the range of performance and without floor or ceiling effects. Tests of the relative fit of several alternative models supported a single latent EF construct. Measurement invariance testing revealed less proficient EF in children at higher sociodemographic risk relative to those at lower risk and no differences between boys and girls. At 3 years of age, when EF skills are emerging, EF appears to be a unitary, more domain-general process.     

The role of gender in the clinical presentation of patients with borderline personality disorder

This study examined gender differences in the pattern of comorbid disorders and degree of impairment among outpatients with borderline personality disorder (BPD). A total of 130 outpatients with BPD were assessed for various lifetime impulse-related disorders and post-traumatic stress disorder and for indices of impairment. Compared with women with BPD, men with BPD reported significantly more lifetime substance abuse disorders, antisocial personality and met criteria of intermittent explosive disorder that did not overlap with a diagnosis of BPD. Women with BPD reported significantly more lifetime eating disorders than men with BPD. No gender differences were found in degree of overall impairment. These results suggest that male and female patients with BPD, although equally distressed, present with different lifetime patterns of impulse-related disorders.     

Childhood physical and sexual abuse in depressed patients with single and multiple suicide attempts

Research has shown both childhood physical and sexual abuse to be associated with later suicide attempts, although some studies have not supported these findings. However, few studies have investigated differences in physical and sexual abuse histories among single and multiple suicide attempters. The goals of the current study were two-fold: (a) to replicate previous findings of associations between childhood sexual and physical abuse and suicide attempts, and (b) to explore differences in reports of childhood physical and sexual abuse among single and multiple suicide attempters. While our results supported the findings that individuals with a history of suicide attempts are more likely to report histories of childhood physical and sexual abuse, we did not find a difference in reported abuse between single and multiple suicide attempters. Implications of these findings, as well as implications for future research, are discussed.     

Grounding co-occurrence: Identifying features in a lexical co-occurrence model of semantic memory

Lexical co-occurrence models of semantic memory represent word meaning by vectors in a high-dimensional space. These vectors are derived from word usage, as found in a large corpus of written text. Typically, these models are fully automated, an advantage over models that represent semantics that are based on human judgments (e.g., feature-based models). A common criticism of co-occurrence models is that the representations are not grounded: Concepts exist only relative to each other in the space produced by the model. It has been claimed that feature-based models offer an advantage in this regard. In this article, we take a step toward grounding a cooccurrence model. A feed-forward neural network is trained using back propagation to provide a mapping from co-occurrence vectors to feature norms collected from subjects. We show that this network is able to retrieve the features of a concept from its co-occurrence vector with high accuracy and is able to generalize this ability to produce an appropriate list of features from the co-occurrence vector of a novel concept.     

The Religious Composition of the Chinese Diaspora,Focusing on Canada

The religious composition of the Chinese Diaspora varies by countries with the highest Christian share in the Philippines (86 percent) and the highest Buddhist share (84.3 percent) in Cambodia. The religiously unaffiliated are more likely found in Vietnam (74.7 percent), Canada (70.1 percent), and Austria (63 percent) and less likely found in the Philippines (0.6 percent) and Malaysia (1.5 percent). A further analysis of high‐quality Canadian census data allows for a more in‐depth focus. In 2001, 81 percent of the 125,000 Chinese migrants (those born in mainland China who had moved to Canada between 1996 and 2001) were unaffiliated, 11 percent were Christian, and 7 percent Buddhist. Relative to the topic of conversion, data on Chinese migrants admitted to Canada between 1981 and 1990 reveals growth in the proportion that self‐identified as religiously affiliated (Christian as well as Buddhist) and a decline in the proportion who reported no religion.     

HIV Risk among Pregnant Teenagers with a History of Interpersonal Violence

This study examined the relationship among interpersonal violence, depressive symptoms, and HIV risk behaviors among pregnant teenagers. A sample of 116 pregnant teenagers was recruited in Rhode Island. Multivariate logistic regressions tested whether or not the relationship between history of interpersonal violence and HIV risk remained after controlling for age and education. Participants reported a young age of sexual debut and low rates of condom use. Multivariate logistic regressions indicate a significant relationship between interpersonal violence and HIV risk but not in degree of depression symptoms and HIV risk. Pregnant teenagers with a history of interpersonal violence could benefit from interventions that address HIV risk.     

Sociodemographic risk and early environmental factors that contribute to resilience in executive control: A factor mixture model of 3-year-olds

Young children at sociodemographic risk generally demonstrate lower executive control (EC), although with substantial heterogeneity across children. Given this marked variability, there may be some at-risk children who display higher EC and may be buffered from or resilient to the effects of sociodemographic risk who can be studied to identify the contributory factors. In this study, factor mixture modelling was used to determine whether subgroups of 3-year-old children existed based on their observed performance on a battery of EC tasks. Results indicated 2 latent groups: One characterized by lower EC and the other by higher EC. Both sociodemographically at-risk and low-risk children were represented in each group, yielding 4 risk-status-by-EC groups, where at-risk higher EC children were termed the resilient group. Proximal household enrichment (e.g., exposure to learning materials, varied enriching experiences, academic and language stimulation, parental responsivity) distinguished the resilient group from lower performing children of similar risk status, whereas distal financial resources and proximal social network resources did not distinguish these two groups. Results suggest potential intervention targets to promote optimal EC development, particularly among children at risk.     

A Narrative Inquiry into a Female Athlete’s Experiences with Protracted Concussion Symptoms

This article explores a female university volleyball student-athlete’s experience with protracted concussion symptoms. Through the methodology of narrative inquiry, four salient themes became apparent related to Daphnée’s experiences: (a) “I felt so alone,” (b) “I had to make one of the hardest decisions of my life,” (c) “I feel like I’m in prison,” and (d) “There’s no light at the end of the tunnel.” Overall, this study offers a rare look into the impact of concussion on an individual’s athletic and academic identities, career progression, and in turn, her imagined stories of who she was and who she was becoming.     

Recent evaluations of the peer-led approach in adolescent sexual health education: a systematic review

CONTEXT: Peer-led interventions have become a popular method of providing sexual health education to adolescents, but the efficacy of this approach and the methodological quality of recent trials have not been systematically reviewed. METHODS: Electronic and hand searches were conducted to identify quasi-randomized and randomized controlled trials of peer-led adolescent sexual health education published from 1998 to 2005. Studies were eligible if they had an appropriate comparison group, provided preintervention and postintervention data, and reported all outcomes. Study results were summarized and, where appropriate, pooled; in addition, 10 aspects of studies' methodological quality were assessed. RESULTS: Thirteen articles met the inclusion criteria. Pooled, adjusted results from seven trials that examined the effects of peer-led interventions on condom use at last sex found no overall benefit (odds ratio, 1.0). None of the three trials that assessed consistent condom use found a benefit. One study reported a reduced risk of chlamydia (0.2), but another found no impact on STI incidence. One study found that young women (but not young men) who received peer-led education were more likely than nonrecipients to have never had sex. Most interventions produced improvements in knowledge, attitudes and intentions. Only three studies fulfilled all 10 of the assessed quality criteria; two others met nine criteria. CONCLUSIONS: Despite promising results in some trials, overall findings do not provide convincing evidence that peer-led education improves sexual outcomes among adolescents. Future trials should build on the successful trials conducted to date and should strive to fulfill existing quality criteria.