The relationship between education level and performance ratings of campus police officers

Data from 165 campus police officers at 16 campus police departments were used to investigate the relationship between educational level and performance of campus police officers. The results of the study indicated that education was significantly related to supervisor ratings of report writing proficiency (r=.29) and communication skills (r=20) but not discipline problems (r=−.01) or overall performance (r=.10). The relationship between education and report writing proficiency was moderated by years of police experience as education predicted performance in officers with five or more years experience but not those with less than five years experience.     

Quantitative PCR overestimation of DNA in samples contaminated with tin

Metals can pose challenges while conducting forensic DNA analysis. The presence of metal ions in evidence-related DNA extracts can degrade DNA or inhibit PCR as applied to DNA quantification (real-time PCR or qPCR) and/or STR amplification, leading to low success in STR profiling. Different metal ions were spiked into 0.2 and 0.5 ng of human genomic DNA in an “inhibition study” and the impact was evaluated by qPCR using the Quantifiler™ Trio DNA Quantification Kit (Thermo Fisher Scientific) and an in-house SYBR Green assay. This study reports on a contradictory finding specific to tin (Sn) ions, which caused at least a 38,000-fold overestimation of DNA concentration when utilizing Quantifiler Trio. This was explained by the raw and multicomponent spectral plots, which indicated that Sn suppresses the Quantifiler Trio passive reference dye (Mustang Purple™, MP) at ion concentrations above 0.1 mM. This effect was not observed when DNA was quantified using SYBR Green with ROX™ as the passive reference, nor when DNA was extracted and purified prior to Quantifiler Trio. The results show that metal contaminants can interfere with qPCR-based DNA quantification in unexpected ways and may be assay dependent. The results also highlight the importance of qPCR as a quality check to determine steps for sample cleanup prior to STR amplification that may be similarly impacted by metal ions. Forensic workflows should recognize the risk of inaccurate DNA quantification of samples that are collected from substrates containing tin.     

Self-Control and Racial Disparities in Delinquency: A Structural Equation Modeling Approach

The purpose of the present study is to examine the racial disparities of offending within the context of self-control theory. The study utilized data from the National Longitudinal Survey of Youth (NLSY79), to examine this effect. All concepts within self-control theory are examined: parental management, low self-control, and delinquency. Results from the study show partial support for Gottfredson and Hirschi’s (1990) self-control theory. The structure of the theory remained stable when controlling for both race, as well as peer pressure. Both theoretical and policy implications are given.     

The Role of Competition in Best Value: How Far Does it Differ from CCT?

This article investigates the role of ‘competition’ within Best Value (BV) and compares it with that of Compulsory Competitive Tendering (CCT). Utilising results of a survey of BV lead officers, the article reveals that ‘competition’ is not being used as widely as may have been expected. However, in terms of outcomes, services subject to BV seem to be at least as likely to be provided externally as would have been the case under CCT. Further analysis also considers the impact that party political control and service type have on the use and outcomes of competition.     

Race and Juvenile Incarceration: A Propensity Score Matching Examination

Disproportionate minority contact is an important issue in contemporary juvenile justice. Few studies have directly examined the link between race and judicial decision to incarceration. Using official data from Pennsylvania (n?=?41,561), this study added to this literature in two ways. This study used propensity score matching to obtain a purer estimate of the influence race has on the decision to petition a case to juvenile court. The results indicated that prosecutors use perceptual shorthand in making this decision that hinges on race. Specifically, blacks were more 1.28 times more likely than whites to have their case petitioned to juvenile court.     

Job satisfaction: validating Dantzker’s four-factor model using structural equation modeling

The purpose of this study was to examine the validity of the four-factor structure from a job satisfaction instrument. Dantzker’s job satisfaction instrument was designed to capture information on four factors: general administration, extras, job, and equipment. Using data from police officers that are middle management (n?=?136), we performed confirmatory factor analysis via structural equation modeling to validate that the four factors are actually capturing job satisfaction. The results of the study show that the four-factor solution fit the model satisfactorily. All of the factor loadings were large expect for one. The results suggest that the four-factor solution has proper validity to use with middle manager police officers. Post hoc simulation analyses (n?=?1000 replications) show that no bias in the factor loadings or standard errors was present in this analysis, and the study had sufficient statistical power.     

Field trips as short-term experiential learning activities in legal education

Field trips offer students the opportunity to learn in a real-world setting and bridge the gap between theory and practice. To date, there has been a dearth of both theoretical and empirical research into the use and effectiveness of field trips as a pedagogic tool in legal education. This article seeks to fill this gap, first by analysing the current research on the use of field trips in higher education across different disciplines and the reported advantages and disadvantages of such usage, and secondly by providing empirical evidence on the benefits of such activities from a field trip, “Living the Law: A Tour of Legal Dublin”, undertaken with students in Dublin City University, Ireland. The tour involved visits to important legal establishments in the city of Dublin, including the Supreme Court, the training institutions of barristers and solicitors in Ireland and a premier legal firm. The article analyses feedback from the students who took this trip on the benefits of such a learning experience.