A test of social learning and intergenerational transmission among batterers

This research examined the direct and indirect transmission of family-of-origin violence among a sample of male domestic violence offenders. Intergenerational transmission of violence was tested by examining the effects of childhood corporal punishment experiences and witnessing inter-parental physical violence on the odds of reporting minor and severe intimate partner violence perpetration in adulthood. Social learning mechanisms were applied to examine the relationship between abuse experiences and the incidence of minor and severe forms of intimate partner violence. Use of a sample of 204 male domestic batterers attending court-mandated family violence intervention programs in an urban setting revealed considerable variation in minor and severe intimate partner violence. Results from logistic regression models suggested intergenerational transmission and social learning provided distinct mechanisms for both minor and severe forms of intimate partner violence.     

Determining ease of access to arms methodology and coding

This paper aims to establish an initial determination of what the primary indicators of the ease of access to small arms and light weapons are. Guns are so abundant and ubiquitous in most parts of the world that the right question to ask is not how many guns are out there but what are the conditions, or lack thereof, that promote the ease of access. This paper also aims to offer researchers with initial tools for coding indicators for the ease of access in future investigations on this important topic. At the outset, I introduce three sets of indicators: legal, ‘black market feeder indicators’, and socialeconomic indicators.

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Hair analysis of opiates in mothers and newborns for evaluating opiate exposure during pregnancy

The increasing interest in toxicological hair analysis as a marker of human exposure to xenobiotics such as illicit substances or therapeutic drugs, has been made feasible by the extension of mass spectrometry, a highly sensitive method of detection. A newborn exposed to drugs in utero can suffer from a varying degree of withdrawal syndrome, a few days after birth. If of opiate origin, the withdrawal syndrome can be treated with morphine, among other therapeutics, but it is not easy to diagnose because of atypical symptoms presented by neonates and especially when maternal drug addiction has not been revealed. To assess and measure toxicological factors linked with the appearance and the severity of this syndrome, maternal and neonatal matrices such as urine, meconium and hair were collected during a protocol approved by the ethical committee. Opiates in particular were measured with GC-MS and potential combined dependences (cannabis, cocaine, amphetamine, LSD and benzodiazepines) and/or substitutive therapeutics (methadone or buprenorphine) were also assessed in 17 mother/neonate couples. Gestational opiate exposure profiles were drawn up and linked with the observed withdrawal syndromes. A withdrawal syndrome seems to appear more frequently after foetal exposure to an association of opiates/substitutive molecules (8 out of 10 withdrawal syndromes observed in this study), although the impact of cocaine and benzodiazepines must also be taken into account. The results obtained in neonatal hair make it possible to affirm foetal drug exposure and are in accordance, for the majority, with the appearance of a neonatal withdrawal syndrome (NWS). Neonatal hair analysis could contribute to assess in utero exposure to opiates, particularly when results in urine and meconium are negative or when these matrices are not available.     

A comparison of animal jaws and bite mark patterns

The purpose of this study was to compare the jaw shapes and bite mark patterns of wild and domestic animals to assist investigators in their analysis of animal bite marks. The analyses were made on 12 species in the Order Carnivora housed in the Mammalian Collection at the Field Museum of Natural History in Chicago, Illinois. In addition to metric analysis, one skull from each species was photographed as a representative sample with an ABFO No. 2 scale in place. Bite patterns of the maxillary and mandibular dentition were documented using foamed polystyrene exemplars, which were also photographed. A total of 486 specimens were examined to analyze the jaw and bite mark patterns. A modified technique for measuring intercanine distances was developed to more accurately reflect the characteristics seen in animal bite marks. In it, three separate areas were measured on the canines, rather than just the cusp tip. This was to maximize the amount of information acquired from each skull, specifically to accommodate variances in the depth of bite injuries.     

Y chromosome STR haplotype data for an Irish population

Y chromosome haplotype data was collected for 155 Irish males residing in the Republic of Ireland. Eleven short tandem repeat (STR) markers: DYS19, DYS385, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438 and DYS439 were analysed and the allele and haplotype frequencies calculated. This Irish data is presented here and was found to be less diverse when compared with the neighbouring UK population.