Factors influencing the precision of estimating the postmortem interval using the triple-exponential formulae (TEF). Part II. A study of the effect of body temperature at the moment of death on the postmortem brain, liver and rectal cooling in 117 forensic cases

The temperatures of three body sites, namely, the brain, liver and the rectum as well as the temperature of the environment were continuously monitored, every 5-10 min, in 117 forensic cases commencing soon after death and in most cases, within 45 min postmortem. The body temperature at the moment of death was empirically determined by a computer-based extrapolation method. Thus, temperature data for the first 3h of each body site were fitted to single-exponential equations and the fitted curve was extrapolated backwards to obtain the intercept on the Y-axis (the temperature axis). The effect of body temperature at the moment of death on postmortem cooling rate is examined and factors influencing body temperature at death are discussed. Forensic fatalities associated with hyper and hypothermia are reviewed briefly.     

Risk Attitudes and Independence Vote Choice

In this article, we examine the impact of risk attitudes on vote choice in the context of a salient referendum with high levels of uncertainty about the consequences of the ballot proposal. Using data from a pre- and post-referendum panel survey conducted in the context of the 2014 independence referendum in Scotland, and a specific battery to measure attitudes to risk, we determine how these attitudes operate in such political contexts. We reach two main conclusions. First, risk attitudes have a direct effect on vote choice, even after controlling for alternative explanations of vote choice such as party identification and leaders’ evaluations. In the aggregate, the effect of risk attitudes on the vote choice contributes to the status quo bias found in referendums. Second, we find that information moderates the effect of risk attitudes on vote choice. Voters who are politically knowledgeable have a greater capacity to predict the consequences of political outcomes and, therefore, they are less affected by their risk attitudes when making their ballot choices.

     

Literatur

Ohne Zusammenfassung     

Improving performance in a Swedish police traffic unit: Results of an intervention

This article describes the results of a feedback system designed to improve performance for a Swedish traffic police unit and examined whether such a feedback system was beneficial or detrimental to the attitudes of the officers. As in many Western countries, government organizations are being required to demonstrate their effectiveness with quantitative performance measures. An approach called the Productivity Measurement and Enhancement System (ProMES) was used with three groups of Swedish Traffic Police to do this. ProMES is a method for identifying unit's objectives, developing measures for these objectives, and using this information as feedback. ProMES was developed with these police units and feedback from the system was used over a four-year period. Results indicate that there were substantial increases in performance. There were also decreases in accidents, injuries, and fatalities compared both to baseline and to comparison groups in Sweden. These improvements were made with fewer and fewer police officers each year.     

Identifying variation in police officer behavior between juveniles and adults

This research explores the basis of officer decision making during encounters with juvenile suspects, and compares these encounters to those between police and adults. Specifically, two types of officer behavior are examined: the decision to arrest, and the exercise of authority. Officer behavior during encounters with juvenile suspects is compared and contrasted to encounters with adult suspects. Results from multivariate analyses find juveniles are significantly more likely to be arrested than adults; however, officers do not exercise different levels of authority during interactions with juvenile suspects. Results also indicate that the factors shaping officer behavior varies across age of suspect, namely, the community context and officer's race offer significantly different influences on juveniles than on adults. Other factors also influence officer discretion differently depending on the age of the suspect, most noteworthy being disrespectful demeanor. The results indicate that police officer behavior during encounters with juvenile suspects is very different than during encounters with adults.     

Prevalence and correlates of psychopathic traits in the household population of Great Britain

There are no previous surveys of psychopathy and psychopathic traits in representative general population samples using standardized instruments. This study aimed to measure prevalence and correlates of psychopathic traits, based on a two-phase survey using the Psychopathy Checklist: Screening Version (PCL: SV) in 638 individuals, 16–74 years, in households in England, Wales and Scotland. The weighted prevalence of psychopathy was 0.6% (95% CI: 0.2–1.6) at a cut score of 13, similar to the noncriminal/nonpsychiatric sample described in the manual of the PCL: SV. Psychopathy scores correlated with: younger age, male gender; suicide attempts, violent behavior, imprisonment and homelessness; drug dependence; histrionic, borderline and adult antisocial personality disorders; panic and obsessive–compulsive disorders. This survey demonstrated that, as measured by the PCL: SV, psychopathy is rare, affecting less than 1% of the household population, although it is prevalent among prisoners, homeless persons, and psychiatric admissions. There is a half-normal distribution of psychopathic traits in the general population, with the majority having no traits, a significant proportion with non-zero values, and a severe subgroup of persons with multiple associated social and behavioral problems. This distribution has implications for research into the etiology of psychopathy and its implications for society.     

Bad cops

Research Summary Police scholars and public policymakers throughout generations have sought to identify reliable correlates of police misconduct. Despite these efforts, general statements as to the etiology and epidemiology of police misconduct remain inconclusive, in part because of the inconsistent definitions of misconduct and the difficulty of obtaining the data required to make such statements. This research attempts to fill these gaps through a comparison of the personal and career histories of all 1,543 officers who were involuntarily separated from the New York City Police Department (NYPD) for cause during 1975–1996 with a randomly selected sample of their police academy classmates who served honorably. The study uses confidential NYPD files as its major data sources, which include extensive biographical and career information. The study finds that career‐ending misconduct rarely occurs in the NYPD and that the types of misconduct do not match well with existing definitions. Several factors emerge as significant predictors of misconduct, including officer race, minimal education, records of prior criminality and prior poor employment, failure to advance in the NYPD, and histories of citizen complaints. Policy Implications This study shows that existing definitions of police misconduct are difficult to apply to actual cases of police malpractice, which leads the authors to create a new eight‐category classification scheme. The rarity of misconduct, especially on‐duty abuse, confirms prior research indicating that most police officers do their jobs without engaging in serious malpractice. These findings suggest that the NYPD has become better behaved as it has become more diverse along race and gender dimensions and that the link between black officers and misconduct might be explained by persistent “tokenism.” The findings related to race have important implications for continued efforts to build racially representative police departments. Personal history findings highlight the importance of conducting background investigations that disqualify candidates with arrest records and employment disciplinary histories, whereas the inverse relationship between college education and misconduct provides strong support for continued emphasis on pre‐ and post‐employment educational requirements.