Sex Differences in the Relationship between Harsh Discipline and Conduct Problems

Research on sex differences in antisocial behaviour may shed light on the causes of childhood antisocial behaviour. Using a longitudinal design, we tested whether there were sex differences in the amount of harsh discipline children received or in the effect of harsh discipline and whether this accounted for sex differences in later conduct problems. Our sample was a representative, longitudinal sample of 13 830 twins born in England and Wales between 1994 and 1996. Results showed that boys experienced more harsh discipline than girls and that the sex difference in harsh discipline accounted for 10 percent to 20 percent of the sex difference in conduct problems. We found no evidence that harsh discipline had a greater effect on boys vs. girls. We also found evidence of a bidirectional relationship between harsh discipline and child conduct problems. These findings were replicated within families, automatically controlling for between‐families confounding factors.     

Changes in the health status of newly housed chronically homeless: the Alaska Housing First program evaluation

The Housing First (HF) model is an evidence-based supportive housing initiative that provides permanent housing for the homeless without preconditions such as sobriety or treatment compliance. This three-year longitudinal study investigated the effects of Alaska's inaugural Housing First projects in Anchorage and Fairbanks on local service usage, costs and tenant quality of life (QoL). A total of 94 tenants participated at baseline in the QoL study and 68 continued to follow-up. Cost data was collected from local municipalities, Alaska Department of Corrections, and local hospitals, health care clinics, behavioral health providers, and detox facilities. Emergency services use by tenants decreased from the year before moving into Housing First to the year after. Changes in health care costs were more variable depending on site and type of service.     

Listening Assessment: The Watson-Barker Listening Test

This article discusses the need for valid and reliable measures of listening behavior and how the Watson-Barker Listening Test was developed to measure the listening abilities of adults and mature college students. Sections of the article describe the nature and forms of the test, various validation procedures and research studies using the test. The claims of validity are partially supported by the data, and the Watson-Barker Listening Test has gained wide acceptance.     

A Risk Assessment Model for Enterotoxigenic Staphylococcus aureus in Pasteurized Milk: A Potential Route to Source‐Level Inference

This article describes a probabilistic model that quantifies hazards that arise from Staphylococcus aureus in milk that is sold as pasteurized in the United Kingdom. The model is centered on coupled dynamics for S. aureus populations, staphylococcal enterotoxins, and the concentration of alkaline phosphatase throughout the milk chain. The chain includes farm collection and storage of pooled milk, further pooling for off‐farm processing, high temperature short time thermal processing, and possible postprocess contamination. The model is implemented as a Bayesian belief network. The results indicate that milk sold as pasteurized is relatively safe with respect to the hazards associated with S. aureus and that most risk is associated with small scale on‐farm processing. An additional analysis of likelihood ratios shows that alkaline phosphatase concentrations in filler tank milk are a good indicator of potential hazards and that these concentrations, in conjunction with other measurements, can be used effectively to discriminate over possible failure modes. The ability to discriminate over potential failure modes can support preemptive actions, such as maintenance or hygiene, which assist with milk chain management and, over extended periods, accumulate to drive improved safety, efficiency, and security.     

Scriven on The Logic of Cause

In a recent article entitled, ‘The Logic of Cause’ Scriven has presented a series of formidable arguments against the possibility of explicating the concept of cause in terms of the concepts of sufficient condition and necessary condition. Some of his main arguments center on the difficulties of capturing the asymmetry of cause and effect and of handling a certain kind of over-determination he calls linked overdetermination. Scriven's contention that there is no way to capture the asymmetry of cause and effect will be countered by constructing a definition of the concept of causal priority in terms of the concepts of sufficient condition and necessary condition. Scriven's contention that the existence of linked overdetermination undermines the necessary condidition feature of the definition will be countered by distinguishing two senses of necessary conditionship. My rebuttal of Scriven's arguments, if successful, indicates that the ‘common sense’ view of the cause as a necessary and sufficient condition of its effects may yet prove to be at least roughly accurate.     

Teachers' Training Needs in the Area of Child Abuse and Protection

SUMMARY: In issue 5(2), Robert Webster outlined the issues in school-based child sexual abuse prevention. He argued that teachers were not being given the training they needed and wanted. This paper reports on a survey in one county of England, and shows the lack of training in child sexual abuse matters to be consistent with Robert Webster's experience. The authors go on to outline the types of training demanded by the vast majority of teachers.     

Allocating observations between two normal populations to maximize the half slope of the F-test

Consider two independent normal populations. Let R denote the ratio of the variances. The usual procedure for testing H₀: R = 1 vs. H₁: R = r, where r≠1, is the F-test. Let θ denote the proportion of observations to be allocated to the first population. Here we find the value of θ that maximizes the rate at which the observed significance level of the F-test converges to zero under H₁, as measured by the half slope.