Parental Imprisonment and Child Protection: A Study of Children Presented to the Melbourne Children's Court

Abstract

This paper reports on a study funded by the Criminology Research Council, Australia, which set out to investigate the intersection between the child protection and criminal justice systems and the extent to which children before the Melbourne Children's Court on child protection matters had a parent currently in prison, awaiting sentencing, or previously in prison. Magistrates identified 156 children as meeting these criteria during the study period June to December, 2006. Analysis of court records gathered quantitative and qualitative data about parents' offending, why the children had been brought to the attention of the court, and the health, welfare, and behavioural concerns the child protection service expressed about the children. There was no coordinated response by the child protection and justice systems to managing these children's situations. Early intervention and the development of child protection service protocols with the corrections system for children whose parents enter prison is essential, to better address the instability and disruption in care these children experience.     

State-Level Variation in the Association Between Educational Attainment and Sleep

Population Research and Policy Review - Demographers have consistently documented the importance of educational attainment for population-health. However, it is becoming increasingly clear that the...     

The Informational Efficiency of Weekly Money Announcements An Econometric Critique

Studies of the weekly money announcement have found markets to be informationally efficient. We demonstrate that this result apparently is related to one or more sources of bias and measurement error that have been introduced to the estimating equations of previous studies. After correcting for these sources of bias and estimating the modified model over the samples employed in earlier studies, we still find evidence to reject the hypothesis of informational efficiency. An alternative explanation is that auxiliary assumptions imposed for empirical convenience introduce measurement error that affects standard tests of the efficient-markets hypothesis.     

Family Therapy Training: Student And Faculty Perceptions

This study compared the questionnaire responses of 71 faculty and 231 students from 12 university and 10 institute, AAMFT-accredited and non-accredited family therapy training programs. The findings about the preferred type of training program, criteria for program selection, expected student experiences, program policies and interprogram cooperation suggested key differences between universities and institutes as well as important similarities. Non-accredited institutes emerged ashaving significant value differences from other programs in the study. The results also highlighted some of the major issues critical to the continued development of family therapy training.     

Data Available for Evaluating the Risks and Benefits of MTBE and Ethanol as Alternative Fuel Oxygenates

The wide-scale use of methyl tertiary butyl ether (MTBE) in gasoline has resulted in substantial public controversy and action to ban or control its use due to perceived impacts on water quality. Because oxygenates are still required under federal law, considerable research has focused on ethanol as a substitute for MTBE. In this article, we summarize the currently available literature on the air and water quality risks and benefits of MTBE versus ethanol as alternative fuel oxygenates. We find that MTBE-fuel blends are likely to have substantial air quality benefits; ethanol-fuel blends appear to offer similar benefits, but these may be at least partially negated because of ethanol's propensity to increase emissions and ambient concentrations of some air contaminants. Releases of gasoline containing either MTBE or ethanol could have an impact on some drinking water sources, although the impacts associated with MTBE tend to relate to aesthetics (i.e., taste and odor), whereas the impacts associated with ethanol generally relate to health risk (i.e., greater exposure to gasoline constituents such as benzene). It is likely that these water quality impacts will be outweighed by the air quality benefits associated with MTBE and perhaps ethanol use, which affect a much larger population. A lack of data on environmental exposures and associated health impacts hinders the completion of a comprehensive quantitative risk-benefit analysis, and the available air and water quality data should be evaluated in a broader risk-management context, which considers the potential life-cycle impacts, costs, and feasibility associated with alternative fuel oxygenates.     

On the Labour Market Progress of Polish Accession Workers in South‐East England

The enlargement of the European Union (EU) in May 2004 produced a very significant wave of immigration to the United Kingdom that is likely to continue to impact its labour market in forthcoming years. Polish migrants were by far the largest cohort of the new entrants. This paper complements previous work that has begun to establish the characteristics and labour market performance of migrants from the new member states who have entered the United Kingdom. This paper uses a unique micro‐level data base to investigate the labour market evolution of Polish migrants in the UK labour market. We find that in the first UK job returns to human capital were negligible. However, for the current job an extra year of education increases the weekly gross wage by 3.2 per cent. There is evidence of a gender differential in pay in both jobs and that older workers are paid more than their younger counterparts but this effect becomes insignificant in the current job. We find that hours worked is a significant factor in wage determination. However, the influence of hours worked on wages declined by approximately 38 per cent between the first and current job. Results from multinomial logit models suggest that over‐time there is some “match” between the occupational groupings that these workers were attached to in Poland and the United Kingdom. We also find evidence that the use of employment agencies by some of these workers increases the likelihood of employment in skilled manual and non‐manual occupations. Workers who have had supervisory responsibility in the United Kingdom are more likely to be in professional or intermediate occupations.     

Uncertainty in Cancer Risk Estimates

Several existing databases compiled by Gold et al.^(1–3) for carcinogenesis bioassays are examined to obtain estimates of the reproducibility of cancer rates across experiments, strains, and rodent species. A measure of carcinogenic potency is given by the TD₅₀ (daily dose that causes a tumor type in 50% of the exposed animals that otherwise would not develop the tumor in a standard lifetime). The lognormal distribution can be used to model the uncertainty of the estimates of potency (TD₅₀) and the ratio of TD₅₀'s between two species. For near-replicate bioassays, approximately 95% of the TD₅₀'s are estimated to be within a factor of 4 of the mean. Between strains, about 95% of the TD₅₀'s are estimated to be within a factor of 11 of their mean, and the pure genetic component of variability is accounted for by a factor of 6.8. Between rats and mice, about 95% of the TD₅₀'s are estimated to be within a factor of 32 of the mean, while between humans and experimental animals the factor is 110 for 20 chemicals reported by Allen et al.⁽⁴⁾ The common practice of basing cancer risk estimates on the most sensitive rodent species-strain-sex and using interspecies dose scaling based on body surface area appears to overestimate cancer rates for these 20 human carcinogens by about one order of magnitude on the average. Hence, for chemicals where the dose-response is nearly linear below experimental doses, cancer risk estimates based on animal data are not necessarily conservative and may range from a factor of 10 too low for human carcinogens up to a factor of 1000 too high for approximately 95% of the chemicals tested to date. These limits may need to be modified for specific chemicals where additional mechanistic or pharmacokinetic information may suggest alterations or where particularly sensitive subpopu-lations may be exposed. Supralinearity could lead to anticonservative estimates of cancer risk. Underestimating cancer risk by a specific factor has a much larger impact on the actual number of cancer cases than overestimates of smaller risks by the same factor. This paper does not address the uncertainties in high to low dose extrapolation. If the dose-response is sufficiently nonlinear at low doses to produce cancer risks near zero, then low-dose risk estimates based on linear extrapolation are likely to overestimate risk and the limits of uncertainty cannot be established.