Disentangling the Weight of School Dropout Predictors: A Test on Two Longitudinal Samples

The aims of this study are to identify the most powerful predictors of school dropout and to determine how stable they are over time. Two generations of White French-speaking boys and girls from 12 to 16 years old (n = 791 in 1974, n = 791 in 1985) completed a self-administered questionnaire on their psychosocial adjustment at least one year before leaving school. As expected, the analyses showed that school, family, behavioral, social, and personality variables could all predict dropping out of school in the two samples. Furthermore, these predictors were quite stable over time. However, statistical improvement measures in logistic regression analyses indicated that school experience variables (i.e., grade retention, school achievement, school commitment) were the best screening variables for potential dropouts. The contribution of other psychosocial variables, even though significant, did not improve very much the capacity to identify who will drop out of school. The discussion highlights the implications of the findings for secondary prevention and screening practices.     

Policy Regimes for the International Waste Trade

Among the unforeseen problems of the new industrial age has been the disposal of increasing quantities of wastes—many hazardous and toxic. Industrial chemistry has produced numerous products that, while useful, are alien to nature and resistant to biodegradation or detoxification. Growing public awareness of the possible hazards and risks involved in disposal of the residuals of industrial activities is arousing a popular demand for environmental protection. But this popular awareness depends upon public information and a degree of scientific literacy—conditions which vary widely among nations. Initial consequences are environmental regulations and restrictions respecting waste disposal in scientifically developed countries, and vulnerability among less developed countries to the export of hazardous wastes from the countries of their origin. A secondary consequence is the emergence of international waste trade as a national and international multidimensional policy problem.     

Psychological and psychosocial interventions after attempted suicide: an overview of treatment studies

A literature search was conducted to collect randomized controlled studies evaluating the outcome of psychological and psychosocial interventions after attempted suicide and deliberate self-harm. Twenty-five studies meeting the inclusion criteria were identified. The studies are grouped according to the psychological approach chosen for the intervention. They are discussed with regard to both the various therapeutic strategies and models used, and the repetition of self-harming behavior as the main outcome.     

Interpretation of a 3,4-methylenedioxymethamphetamine (MDMA) blood level: discussion by means of a distribution study in two fatalities

The amphetamine derivative 3,4-methylenedioxymethamphetamine (MDMA, "Ecstasy" is a currently used or abused designer drug and fatalities are frequently encountered in forensic practice. However, the question remains open whether an MDMA blood level can be toxic or even potentially lethal. In order to provide insight in the interpretation of a detected MDMA concentration, the distribution of MDMA and its metabolite 3,4-methylenedioxyamphetamine (MDA) in various body fluids and tissues was studied and discussed in two different fatalities. Apart from peripheral blood samples (such as femoral and subclavian blood), various blood samples obtained centrally in the human body and several body fluids (such as vitreous humour) were examined. In addition, various tissues such as cardiac muscle, lungs, liver, kidneys, and brain lobes were analysed. In contrast to the peripheral blood levels, high MDMA and MDA levels were found in cardiac blood and the majority of the organs, except for the abdominal adipose tissue. The high concentrations observed in all lung lobes, the liver and stomach contents indicate that post-mortem redistribution of MDMA and MDA into cardiac blood can occur and, as a result, blood sampled centrally in the body should be avoided. Therefore, our data confirm that peripheral blood sampling remains "the golden standard". In addition, a distinct difference in peripheral blood MDMA concentrations in our two overdose cases was established (namely 0.271 and 13.508 microg/ml, respectively). Furthermore, our results suggest that, if a peripheral blood sample is not available and when putrefaction is not too pronounced, vitreous humour and iliopsoas muscle can be valuable specimens for toxicological analysis. Finally, referring to the various mechanisms of death following amphetamine intake, which can result in different survival times (e.g. cardiopulmonary complications versus hyperthermia), the anatomo-pathological findings and the toxicological results should be considered as a whole in arriving at a conclusion.     

Correspondence

Negotiation Journal -