An experimental model of tool mark striations in soft tissues produced by serrated blades

Stab wounds produced by serrated blades are generally indistinguishable from stab wounds produced by non-serrated blades, except when visible tool mark striations are left on severed cartilage. We explored the possibility that similar striations may be produced on the soft tissues of internal organs. Loin of beef, bovine kidney, and pig heart, liver, and aorta were each stabbed 20 times with a coarsely serrated blade. The walls of the stab tracks were exposed and documented by photography, cast with dental impression material, and the casts photographed. Striations were identified in all of the tissues in every stabbing, but their consistency and quality varied between tissues. Striations were most easily seen in liver, heart, and aorta. Tool mark striations in soft tissues other than cartilage have not been described in homicidal stabbings, likely because they have not been sought. We suggest that the walls of stab wound tracks should be exposed, and tissue striations should be sought as a means of identifying the weapon as having a serrated blade.     

Measuring State Environmental Policy

Studies of environmental policy employ various empirical strategies for measuring state environmental effort. The majority of these strategies can be divided into four categories: indices of state programmatic indicators, government expenditures, pollution abatement costs, and regulatory enforcement actions. In this article, we argue that these measures are empirically distinct, capture different attributes of state environmental policy, and are correlated with different intrastate factors. Thus, the choice among environmental policy measures is substantively important for researchers to consider, and we conclude by providing advice to scholars concerning choosing among these measures.     

Do the Mental Health Consequences of Sexual Victimization Differ Between Males and Females? A General Strain Theory Approach

Sexual assault is a traumatizing event linked to numerous mental health consequences. Although extant research has thoroughly examined the collateral consequences experienced by females, limited literature exists regarding how sexual violence comparatively affects males and females. Using data from the National Violence Against Women Survey (1995–1996) and a strain theoretical framework, the current study addresses this research gap to understand the effects of sexual assault and sex on depression. Results indicate that victims of sexual assault have higher depression scores than persons who have not been sexually assaulted in their lifetime. Moreover, we found no sex effect for sexual assault on depression. The methodology used eliminated a bias typically associated with regression analyses, caused from statistical inference after improper model selection. Policy implications and directions for future research are discussed.     

Using accumulated degree-days to estimate the postmortem interval from decomposed human remains

Forensic anthropologists often rely on the state of decomposition to estimate the postmortem interval (PMI) in a human remains case. The state of decomposition can provide much information about the PMI, especially when decomposition is treated as a semi-continuous variable and used in conjunction with accumulated-degree-days (ADD). This preliminary study demonstrates a supplemental method of determining the PMI based on scoring decomposition using a point-based system and taking into account temperatures in which the remains were exposed. This project was designed to examine the ways that forensic anthropologists could improve their PMI estimates based on decomposition by using a more quantitative approach. A total of 68 human remains cases with a known date of death were scored for decomposition and a regression equation was calculated to predict ADD from decomposition score. ADD accounts for approximately 80% of the variation in decomposition. This study indicates that decomposition is best modeled as dependent on accumulated temperature, not just time.     

Behavioral Cues to Deception vs. Topic Incriminating Potential in Criminal Confessions

Coding statements of criminal suspects facilitated tests of four hypotheses about differences between behavioral cues to deception and the incriminating potential (IP) of the topic. Information from criminal investigations corroborated the veracity of 337 brief utterances from 28 videotaped confessions. A four-point rating of topic IP measured the degree of potential threat per utterance. Cues discriminating true vs. false comprised word/phrase repeats, speech disfluency spikes, nonverbal overdone, and protracted headshaking. Non-lexical sounds discriminated true vs. false inthe reverse direction. Cues that distinguished IP only comprised speech speed, gesticulation amount, nonverbal animation level, soft weak vocal and “I (or we) just” qualifier. Adding “I don't know” to an answer discriminated both IP and true vs. false. The results supported hypothesis about differentiating deception cues from incriminating potential cues in high-stakes interviews, and suggested that extensive research on distinctions between stress-related cues and cues to deception would improve deception detection.     

Primacy Implementation of Environmental Policy in the U.S. States

Environmental regulation is frequently implemented through asystem that allows states to choose whether to assume primaryauthority, or "primacy," for implementation and enforcement.This study looks at what causes states to assume this authorityin two important areas of environmental policy: air and waterpollution. It finds that in each policy area, primacy assumptionis unrelated to the "greenness" of state environmental policygenerally and negatively related to indicators of policy innovationwithin that area. Rather than being driven by commitment tothe environment, primacy assumption appears to be driven predominatelyby other factors, which differ substantially across the airand water policy arenas. These findings call into question thewidely held view that primacy assumption is an indicator ofstate environmentalism and indicate that a more nuanced viewof what causes states to assume primacy is necessary to fullyunderstand the dynamics of intergovernmental policy implementation.     

The case of Dr. Shipman

On January 31, 2000, Dr. Harold Shipman was convicted at Preston, England, of murdering 15 of his patients by administering lethal doses of diamorphine (pharmaceutical heroin). Investigations indicate that, during his working life, he killed about 220 to 240 of his patients. The bodies of many victims were cremated. Twelve victims were exhumed, and 9 of these deaths were included in the indictment. Most victims were elderly and had histories of natural disease. Autopsies confirmed known natural disease but showed no evidence of acute lethal events. Analysis of skeletal muscle disclosed significant quantities of morphine, to which the deaths were attributed. Circumstantial evidence was strong, as illustrated by the convictions in 6 deaths without autopsy or toxicology, because the bodies had been cremated. Organic compounds are remarkably stable in buried bodies. Even so, detection and quantitation of morphine in exhumed bodies may become problematic after burial for 4 years or more. Morphine glucuronide is slowly converted back to free morphine in the buried corpse.