Minimal Y-chromosome haplotypes plus DYS287 in Jewish populations

POPULATION: A total of 71 Jewish individuals obtained from the collection of The National Laboratory for the Genetics of Israeli Populations at Tel-Aviv University: 14 Ashkenazi, 21 Sephardic (from Turkey), 23 North African (from Morocco, Libya and Tunicia) and 13 Oriental (from Iraq and Iran).     

Types of neutralization and types of delinquency

Neutralization theory was tested with questionnaires administered to a random sample of public school students (N=298) and institutionalized male delinquents (N=53). Nye-Short delinquency items were factor analyzed to yield three dimensions of delinquency (Predatory, Minor, and Aggressive), and each of the five techniques of neutralization was scored separately. Patterns of acceptance of neutralization techniques were similar among high school males, high school females, and institutionalized males. For example, all three subsamples scored highest on Detail of a Victim and lowest on Appeal to Higher Loyalties. Correlations between each technique of neutralization and each type of delinquency, however, were statistically significant and quite dissimilar. Within the three subsamples, however, there were no discernible patterns among these dissimilar correlations. In fact, few of the differences among these correlations were statistically significant. The analysis provides general support for neutralization theory, but indicates that the particular technique of neutralization as well as the particular type of delinquent act may be viable distinctions in delinquency research.     

Social Attitudes and Political Party Preference Among Swedish Youth

Differences in social attitudes between youthful supporters of different Swedish political parties were studied within a cluster sample of 783 Swedish high school students. Analyses of variance disclosed that, overall, respondents with different political party preferences differed with respect to social attitude dimensions: Political-Economic Conservatism, Social Inequality, Punitiveness, Militarism, Pro-western Sentiments, Racism, Xenophobia and Religion in that order. Multivariate, logistic regression analysis disclosed, among other things, that (1) the issue of political-economic conservatism (i.e. 'left-right') was a highly salient one for all party supporters with the exception of fascists, and (2) with the exception of Political-Economic Conservatism, different combinations of social attitudes were shown to discriminate any given party from all other parties. The theoretical implications of the findings are discussed.     

Testing for Cointegrating Relationships with Near-Integrated Data

Testing theories about political change requires analysts tomake assumptions about the memory of their time series. Appliedanalyses are often based on inferences that time series areintegrated and cointegrated. Typically analyses rest on Dickey–Fullerpretests for unit roots and a test for cointegration based onthe Engle–Granger two-step method. We argue that thisapproach is not a good one and use Monte Carlo analysis to showthat these tests can lead analysts to conclude falsely thatthe data are cointegrated (or nearly cointegrated) when thedata are near-integrated and not cointegrating. Further, analystsare likely to conclude falsely that the relationship is notcointegrated when it is. We show how inferences are highly sensitiveto sample size and the signal-to-noise ratio in the data. Wesuggest three things. First, analysts should use the singleequation error correction test for cointegrating relationships;second, caution is in order in all cases where near-integrationis a reasonable alternative to unit roots; and third, analystsshould drop the language of cointegration in many cases andadopt single-equation error correction models when the theoryof error correction is relevant.     

An investigation of two methods of DNA recovery from fired and unfired 9 mm ammunition

Cartridge cases are often recovered from crime scenes involving firearms and, in the United Kingdom (where gun possession is strictly controlled), these are commonly from 9 mm calibre ammunition. The ability to obtain informative DNA profiles from touch DNA on recovered cartridges could have a significant impact on the investigation of that type of offence. However, this avenue may not be routinely considered as investigators in the UK have historically had a low expectation of obtaining useful DNA profiles. This stance may not be unreasonable given that (a) only trace amounts of DNA are likely to have been transferred onto the cartridge cases through handling; and (b) when the cartridge is spent, the potential deterioration of that DNA caused by the act of discharging the weapon.We introduce a novel semi-automatable method using direct lysis for the recovery of DNA from ammunition and compare it with a traditional double-swabbing method (using wet and dry swabs). DNA profiling of the DNA recovered using both methods was carried out using the ESI17 FAST STR system (Promega). This demonstrated a significant increase in DNA recovery using the direct lysis approach, and correspondingly improved STR results.We also investigated the effect on the recovery and profiling of DNA from fired, and unfired, 9 mm cartridges using the direct lysis technique. These results demonstrate that DNA suitable for STR analysis can still be recovered from fired ammunition with only slightly reduced yields compared to unfired ammunition. In these experiments, the handler of the ammunition was most commonly either the sole contributor or the major contributor to the recovered DNA profile.