Suicide by asphyxiation due to helium inhalation

Suicide by asphyxiation using helium is the most widely-promoted method of "self-deliverance" by right-to-die advocates. However, little is known about persons committing such suicides or the circumstances and manner in which they are completed. Prior reports of suicides by asphyxiation involving helium were reviewed and deaths determined by the North Carolina Office of the Chief Medical Examiner to be helium-associated asphyxial suicides occurring between January 1, 2000 and December 31, 2008 were included in a new case series examined in this article. The 10 asphyxial suicides involving helium identified in North Carolina tended to occur almost exclusively in non-Hispanic, white men who were relatively young (M age = 41.1 T 11.6). In 6 of 10 cases, decedents suffered from significant psychiatric dysfunction; in 3 of these 6 cases, psychiatric disorders were present comorbidly with substance abuse. In none of these cases were decedents suffering from terminal illness. Most persons committing suicide with helium were free of terminal illness but suffered from psychiatric and/or substance use disorders.     

Gender, social support, and depression in criminal justice-involved adolescents

Knowing where criminal justice-involved teens look for support and whether those supports reduce depression has important and possibly gender-specific treatment implications for this vulnerable population. This study examines the relationships between social support and depression in a mixed-gender sample of 198 incarcerated adolescents. Greater support from families and overall and greater satisfaction with supports predicted lower depression for boys and girls. Support from siblings and extended family strongly predicted lower depression; support from parents and from friends was either not related or only weakly related to depression. Girls reported higher levels of depression, more support from friends and extended family, and less support from parents than did boys. Family, sibling, and overall support were stronger predictors of depression for girls than for boys. Results suggest that nonparent family members, especially siblings and extended family, provide important emotional resources for teens in the criminal justice system.     

Deflecting Stereotype Threat Through Downward Comparison: When Comparison with Immigrants Boosts the Performance of Stigmatized Native Students

Two experiments examined the effect of comparison with immigrants on the intellectual performance of stigmatized native students (i.e., women and students from low socioeconomic backgrounds). It was predicted that such a comparison may boost the test performance of both groups of students rather than comparison with their counterparts who are not stigmatized. In line with this hypothesis, we found that female European students (Study 1) performed better on a math test when they were led to compare with a female immigrant rather than with another female European student. Study 2 replicated this finding in regard to the performance of native students with low socioeconomic status on a general intelligence test. Results are discussed in terms of stereotype susceptibility predicaments and their implications for native-immigrant performance gaps.     

The thermal visualisation of latent fingermarks on metallic surfaces

Recent published research has lead to improved techniques for recovering latent fingermarks from metallic surfaces. The present study corroborates and extends some of the work carried out by Bond [1], [2], [3], but an alternative mechanism is proposed for the thermal visualisation of fingermarks based on differential oxidation and the production of interference colours that improve contrast. Fingermarks treated at low temperature could be reheated to enhance recovery, but an upper temperature limit occurs beyond which the mark degrades. The mechanism of enhancement is discussed.     

An evaluation of non-metric cranial traits used to estimate ancestry in a South African sample

Establishing ancestry from a skeleton for forensic purposes has been shown to be difficult. The purpose of this paper is to address the application of thirteen non-metric traits to estimate ancestry in three South African groups, namely White, Black and "Coloured". In doing so, the frequency distribution of thirteen non-metric traits among South Africans are presented; the relationship of these non-metric traits with ancestry, sex, age at death are evaluated; and Kappa statistics are utilized to assess the inter and intra-rater reliability. Crania of 520 known individuals were obtained from four skeletal samples in South Africa: the Pretoria Bone Collection, the Raymond A. Dart Collection, the Kirsten Collection and the Student Bone Collection from the University of the Free State. Average age at death was 51, with an age range between 18 and 90. Thirteen commonly used non-metric traits from the face and jaw were scored; definition and illustrations were taken from Hefner, Bass and Hauser and De Stephano. Frequency distributions, ordinal regression and Cohen's Kappa statistics were performed as a means to assess population variation and repeatability. Frequency distributions were highly variable among South Africans. Twelve of the 13 variables had a statistically significant relationship with ancestry. Sex significantly affected only one variable, inter-orbital breadth, and age at death affected two (anterior nasal spine and alveolar prognathism). The interaction of ancestry and sex independently affected three variables (nasal bone contour, nasal breadth, and interorbital breadth). Seven traits had moderate to excellent repeatability, while poor scoring consistency was noted for six variables. Difficulties in repeating several of the trait scores may require either a need for refinement of the definitions, or these character states may not adequately describe the observable morphology in the population. The application of the traditional experience-based approach for estimating ancestry in forensic case work is problematic.     

Examination of the Relationship Between Parental Satisfaction and Child Maltreatment Potential While Considering Social Desirability

Parental dissatisfaction with children appears to be associated with child maltreatment. However, little is known regarding the specific domains of parental dissatisfaction that may increase child maltreatment potential, particularly in perpetrators of child maltreatment where substance abuse is present. In this study, responses to the Child Abuse Potential Inventory (CAPI) and a scale measuring parental satisfaction in 11 domains were examined in a sample of 82 mothers who were referred for treatment of substance abuse and child neglect by the local child protective service agency. Results indicated that mothers were relatively most satisfied with their children overall, and least satisfied in domains that were relevant to discipline (i.e., following house rules, compliance, reaction to redirection and punishment, completion of chores). Five of the 11 areas of parental satisfaction that were assessed evidenced negative correlations with child abuse potential, indicating that as satisfaction increased, abuse potential decreased. However, when correlation analyses excluded participants with elevated CAPI Lie scale scores (a measure of social desirability), only overall happiness demonstrated a significant negative correlation with child abuse potential. These results suggest that while associations are present among measures of parental satisfaction and child abuse potential, these associations are moderated to some extent by social desirability, which may help explain some of the inconsistencies reported in prior studies of parental satisfaction and child maltreatment potential.     

The influence of rape myth acceptance,sexual attitudes,and belief in a just world on attributions of responsibility in a date rape scenario

Purpose. The purpose of this study was to examine the influence of rape myth acceptance, belief in a just world, and sexual attitudes on attributions of responsibility in a date rape scenario. We predicted that people higher in rape myth acceptance and those who more strongly believed in a just world, as well as those who held more conservative sexual attitudes, would attribute greater blame to the accuser than to the accused. Methods. One hundred seventy‐two undergraduates from a medium‐sized, Catholic university in the USA read a hypothetical date rape scenario and completed the Rape Myth Acceptance Scale, the Just World Scale, the Sexual Attitudes Scale, and a Judgment Questionnaire constructed for the current study. Results. Rape myth acceptance mediated the relationship between gender and judgments of responsibility for the accused and the accuser. Men were more likely to endorse rape myths and, consequently, assign less responsibility to the accused and more responsibility to the accuser than women. Conclusions. Pre‐existing beliefs regarding the nature of rape and the circumstances surrounding it may bias attributions of responsibility in date rape cases. There may be utility in addressing whether jurors hold such beliefs prior to the start of a trial.     

Considering Mixed Mode Surveys for Questions in Political Behavior: Using the Internet and Mail to Get Quality Data at Reasonable Costs

Telephone surveys have been a principle means of learning about the attitudes and behaviors of citizens and voters. The single mode telephone survey, however, is increasingly threatened by rising costs, the declining use of landline telephones, and declining participation rates. One solution to these problems has been the introduction of mixed-mode surveys. However, such designs are relatively new and questions about their representativeness and the intricacies of the methodology remain. We report on the representativeness of a post election mixed-mode (Internet and mail) survey design of 2006 general election voters. We compare sample respondent means to sample frame means on key demographic characteristics and examine how mail and Internet respondents differed in terms of attitudes, behaviors and demographics. We find that overall the Internet respondents were representative of the population and that respondent choice of mode did not influence item response. We conclude that mixed-mode designs may allow researchers to ask important questions about political behavior from their desktops.