The Response of Skin to Applied Stress: Investigation of Bitemark Distortion in a Cadaver Model*

Abstract: Knowledge of distortional properties of skin is important in bitemark analysis. Thus, the response of skin to stress from bites was investigated. Four sets of models were created from the dentition of one individual. Anterior teeth were systematically removed to vary contact surface area. A biting apparatus was constructed with an integrated load cell. Forty‐six bites were created perpendicular to Langer lines on six cadavers. Rate of force application and bite pressure were controlled. Metric/angular measurement and hollow volume overlays were employed. Distortion produced by each dentition was calculated and assessed. Results showed that as teeth impressed loose tissue, mesial/distal distance increased, angles of rotation flattened, and inter‐canine distance lengthened. An opposite effect was seen in tight tissue. When the surface area of the dentition was reduced, a mixture of these effects was observed. Conclusions indicated that stiffness of the tissue was the most important variable in bitemark distortion.     

An Examination of Authoritarian Personality Traits among Police Officers: The Role of Experience

This study compared authoritarian traits as determined by MMPI-2 scores between inexperienced versus experienced police officers. The purpose of this comparison was to investigate whether experienced police officers possessed higher levels of authoritarian traits which may be related to years on the job. Results found that inexperienced and experienced police officers tend to be psychologically healthy and do not possess high levels of authoritarian traits. Some specific differences emerged with inexperienced police officers demonstrating higher scores on ASP (antisocial practices) but lower scores on HY (emotional reactions to stress). Possible reasons for these results are discussed.     

Dreams and Nightmares: Practical and Ethical Issues for Patients and Physicians Using Personal Health Records

Electronic health records for patients, personal health records (PHRs), have become increasingly popular among policy makers and purchasers, but uptake among patients and physicians has been relatively slow. PHRs have varying uses that might make them more or less appealing to different stakeholders. The three core uses for PHRs — promoting communication, data use, and patient responsibility — each raises a set of potential practical and financial dilemmas. But some ethical concerns are also at play, some of which are rarely recognized as values-based barriers to the use of PHRs. Recognizing these ethical issues, and addressing them explicitly in PHR design and policy making, would help PHRs to achieve their promise.     

A new barrier to participation: Heterogeneous application of voter identification policies

In democratic societies there is a tension between maximizing ballot access and minimizing voter fraud. Since the 2000 presidential election, this tension has been central to discussions about election reform at the national, state, and local level. We examine this tension by focusing on the implementation of voter identification laws in one state that has experienced significant issues in recent elections, and that is currently implementing election reform: New Mexico. We hypothesize that Hispanic voters are more likely to show some form of identification than other types of voters. Using a voter data set from New Mexico's First Congressional District in the 2006 election, we find that Hispanic, male and Election Day voters are more likely to show some form of identification than non-Hispanic, female and early voters. In addition, using an overlapping study of Bernalillo County 2006 poll workers, which almost entirely overlaps with the First Congressional District, we find no evidence that differences in poll worker partisanship or ethnicity produce differences in voter identification procedures. Our findings suggest that broad voter identification laws, which may be applied unequally, may be perceived as discriminatory.