Recidivist criminal behaviour and executive functions: a comparative study

This study sought to analyse the relation between executive functions and criminal recidivism. We assessed a set of cognitive abilities associated with executive functioning in a group of recidivist offenders (n = 19), primary offenders (n = 25) and non-offenders (n = 30). Our results, tested with nonparametric statistics and Monte Carlo method, revealed that there were no executive differences between both groups of offenders but, when compared with non-offenders, the recidivists showed a worse performance in Trail Making Test part B, and the primary offenders presented a significant lower score on Porteus Maze Test Age score. This study suggests that there can be a different pattern of executive functioning deficits associated with the offenders’ criminal record: recidivism may be more related to mental flexibility impairments and primary offenders’ antisocial behaviour may be aggravated by planning deficits.     

Detection of thyroglobulin in blood stains as an aid in the diagnosis of mechanical asphyxia

Mechanical forces applied to the neck region are known to release certain amounts of thyroglobulin into circulation. In this experiment, an attempt was made to detect thyroglobulin in bloodstains as an aid in the diagnosis of mechanical asphyxia. Experimental bloodstains containing thyroglobulin at concentrations of 1, 2, 5 and 10 mu g/mL were prepared on a sheet of filter paper. Small pieces of bloodstains, measuring approximately 2.4 cm2 in area, were extracted with 0.1 mL of distilled water and the extracts were tested against an antihuman thyroglobulin serum by precipitation-electrophoresis. Bloodstains containing more than 1 mu g/mL of thyroglobulin formed distinct precipitin lines for up to one month of storage, while bloodstains containing more than 5 mu g/mL of thyroglobulin formed distinct precipitin lines for up to three months of storage. The present results suggest that the bloodstains can be utilized in the diagnosis of mechanical asphyxia.     

Trade and development policies in Colombia: Export promotion and outward orientation, 1967–1992

As developing democracies implement programs of economic adjustment and trade liberalization, we need to examine the relationship between the state and society in the making of foreign economic policies. This article examines trade and development policies in Colombia, one of Latin America's more institutionalized democracies. Colombia was one of the first countries in Latin America to begin a major reorientation away from full dependence on ISI as a strategy of development. The research shows that domestic political institutions and actors have had a decisive impact on the character and direction of foreign economic policies. The study also illustrates how state capacity for economic management is enhanced by bureaucratic insulation and institutional reform. Carlos E. Juárez is a Ph.D. candidate in the Department of Political Science at the University of California, Los Angeles. His research focuses on the politics of trade liberalization in Latin America, government-business relations in developing democracies, and comparative political economy. He was a visiting researcher and lecturer at theUniversidad de los Andes in Bogotá, Colombia from 1991–1992. For 1993–1994 he will be a visiting research fellow with the Center for U.S.-Mexican Studies at the University of California, San Diego.     

C7 typing of blood stains using isoelectric focusing and immunoblotting

By means of isoelectric focusing and immunoblotting C7 types were clearly demonstrated from bloodstains which had been stored at 37 degrees C for up to three weeks, at room temperature for up to six weeks and at 4 degrees C for over ten weeks. The C7 typing is practically useful in medicolegal individualization of unknown bloodstains.     

Medicolegal use of placental alkaline phosphatase in infanticide

By means of starch gel electrophoresis and an improved staining technique for the demonstration of isoenzyme bands, placental alkaline phosphatase types were demonstrated in placenta tissue and birth blood traces, which had been stored for several days at room temperature. This method was successfully applied in a case of infanticide and secret delivery to identify the mother of the child. The results of a study on a Japanese population are also reported.     

Use of histoelectrofocusing in the determination of PGM1 subtypes in human body tissues

The present study reports the successful application of histo-electrofocusing to the determination of PGM1 subtypes in various tissues of the human body. The method described here is of practical use in individualizing parts of cadavers stored for up to 1 week.     

Juvenile delinquency and victimization: a theoretical typology

It is a widely voiced notion that juvenile delinquency and victimization co-occur extensively in the youth population, in particular because delinquent youth engage in risky activities. But theory from the bullying and traumatic stress literatures suggests that there may be additional pathways by which delinquency and victimization are connected. This analysis looks for possible subtypes of delinquents and victims consistent with such pathways. Using the Developmental Victimization Survey, a national sample of 1,000 youth aged 10 to 17 were interviewed over the phone. Support emerges for three distinct types of delinquent-victims, who are termed bully-victims, delinquent sex/maltreatment- victims, and property delinquent-victims. There is also evidence for substantial groups of youth who are primarily delinquent but not seriously victimized, as well as youth who are primarily victimized but not delinquent.     

Population data on the AmpF/STR Identifiler loci in Africans and Europeans from South Africa

Allele frequencies of 15 short tandem repeat (STR) loci, D8S1179, D21S11, D7S820, CSF1PO, D3S1358, TH01, D13S317, D16S539, D2S1338, D19S433, vWA, TPOX, D18S51, D5S818 and FGA, were determined for 98 unrelated Africans from South Africa and 98 unrelated Europeans from South Africa using the AmpFlSTR Identifiler PCR amplification kit. The genotype frequency distributions of the 15 STR loci were in the Hardy-Weinberg equilibrium for both populations.     

Palatal rugae pattern in a Portuguese population: a preliminary analysis

Palatal rugae have been related with specific racial groups and are said to be useful in sex discrimination. This work aimed to characterize the palatal rugae patterns in a Portuguese population. Fifty plaster casts were examined for first and third rugae shape evaluation; shape, frequency, and association with sex were studied. In females, the most prevalent first rugae were the straight type on the right and the curve type on the left; in males, the straight type was the most prevalent on both sides. The most frequent third rugae type was sinuous on both sides, in both sexes. No significant sexual dimorphism in rugae shape was found (p > 0.05). When comparing these results with those from other investigations, it was clear that a particular rugae pattern could be established for different ethnic groups. However, the small sample size justifies further work in larger samples to validate these findings.