Symmetrical fracturing of the skull from midline contact gunshot wounds: reconstruction of individual death histories from skeletonized human remains

This paper reports a bilaterally symmetrical cranio-facial fracture pattern that is observed in self-inflicted, midline gunshot wounds. Five cases of self-inflicted gunshots wounds are presented as follows: two high-powered rifle cases, two shotgun cases, and one handgun case. In all five cases the remains were either decomposing or skeletonized and submitted to forensic anthropologists. Following identification, the main focus of the anthropological examination was the analysis of perimortem trauma to the skeleton. In each case, the skull was submitted in a highly fragmented state. Nevertheless, by focusing on the pattern of perimortem cranio-facial fractures, the anthropologists contributed key information regarding the circumstances of death. The observed symmetrical cranio-facial fracture patterns in the above cases are described in detail and interpreted. The specific location of the linear fractures is discussed, as well as the theoretical rationale behind the location in terms of skeletal architecture, such as buttresses, struts, and sutures. The interpretive framework provided by this paper may prove helpful to others who are faced with similar cases of cranio-facial fracturing.     

Quality assurance testing of an explosive trace analysis laboratory

During 1989, the Forensic Explosives Laboratory (FEL) established a weekly quality assurance testing regime in its explosives trace analysis laboratory. The purpose of the regime is to prevent the accumulation of explosives traces within the laboratory at levels which could, if other precautions failed, result in the contamination of samples and controls. This paper describes the regime and summarizes the results from approximately eight years of tests. Lessons learned and improvements made over the period are also discussed.     

Punched with a fist: the etiology of a fatal depressed cranial fracture

We report a case in which a 33-year-old man was discovered unconscious following a fistfight with another man. Emergency neurosurgical efforts to repair a depressed temporoparietal skull fracture and associated brain injuries were unsuccessful. The forensic anthropologist and pathologist worked in tandem to sort out a complex combination of cranial evidence, including healed antemortem trauma, perimortem blunt force trauma, remote and recent neurosurgical intervention, and the craniotomy cut performed at autopsy. The victim had suffered head injuries and a right temporoparietal craniotomy ten years prior to death. The perimortem cranial fractures were centrally located within a surgically repaired roundel of bone involving portions of the right temporal and parietal bones. Reportedly, the victim was punched on the right side of his head as he was lying on the ground with the left side of his head against an asphalt surface. A primary question in the case was whether a blow with a fist could have produced the observed cranial injuries. To adequately answer that question, known data on the minimum amount of force required to fracture the temporoparietal region were compared to data on the amount of force generated by a blow with a fist. A biomechanics expert demonstrated that a single blow with a fist to the rigidly supported head of the victim could generate the required force to produce the observed fractures. The previous medical condition possibly predisposed the victim to the cranial fractures and contributed to the depressed nature of the fractures. Although depressed cranial fractures do not typically result from a blow with a fist, it was determined in this case that the fracture pattern was consistent with a punch to the head.     

Economic Development and Democracy: the View from Latin America

This article provides a robust empirical test of the economic development thesis using time-series data on seventeen Latin American countries ( n =408). It specifies similar models (both linear and non-linear) to those found in the global comparative literature on economic development and democracy in an effort to replicate their findings at the regional level. The statistical analysis shows that the positive relationship between economic development and democracy is not upheld at this level, even when using alternative measures of both and controlling for sub-regional variation. Overall, the analysis provides a regional 'most likely' study that infirms the main claims of modernization theory.     

The politics of bureaucratic competition: The case of natural resource policy

Many concerned with how government functions consider creating competition between bureaucracies an attractive option. Others are skeptical of what impact rival agencies have when they are operating within a political context. Reflecting these discrepant viewpoints, some scholars believe that regulators will compete vigorously for resources and responsibilities; others assert that agency members will act passively as they attempt to protect their autonomy. To assess these contrasting perspectives and determine why competitive agency structures might exist, the following analysis examines one of the classic situations where agencies can serve as functional substitutes: the relationship between the United States Forest Service and the National Park Service. The results demonstrate that agencies put far more weight on autonomy than competition. The principal advantage of functional rivalry for politicians—at least where federal lands are concerned—is to expand the choice set of alternatives available to them.     

Information and opinion change on ballot propositions

This paper examines mobilization and conversion perspectives of opinion change during election campaigns. We demonstrate that opinion volatility during ballot proposition contests often reflects mobilization of awareness more than conversion of opinions. Furthermore, we find little support for the hypothesis that media spending affects opinions on the propositions examined here. An examination of other information sources suggests that many voters are able to use cues other than advertising when making decisions.An earlier version of this paper was presented at the Western Political Science Association meeting, Pasadena, California, March 22, 1993. The authors names are listed in alphabetical order.     

Conditional Race Disparities in Criminal Sentencing: A Test of the Liberation Hypothesis From a Non-Guidelines State

Objectives

To test the liberation hypothesis in a judicial context unconstrained by sentencing guidelines.

Methods

We examined cross-sectional sentencing data (n = 17,671) using a hurdle count model, which combines a binary (logistic regression) model to predict zero counts and a zero-truncated negative binomial model to predict positive counts. We also conducted a series of Monte Carlo simulations to demonstrate that the hurdle count model provides unbiased estimates of our sentencing data and outperforms alternative approaches.

Results

For the liberation hypothesis, results of the interaction terms for race x offense severity and race x criminal history varied by decision type. For the in/out decision, criminal history moderated the effects of race: among offenders with less extensive criminal histories blacks were more likely to be incarcerated; among offenders with higher criminal histories this race effect disappeared. The race x offense severity interaction was not significant for the in/out decision. For the sentence length decision, offense severity moderated the effects of race: among offenders convicted of less serious crimes blacks received longer sentences than whites; among offenders convicted of crimes falling in the most serious offense categories the race effect became non-significant for Felony D offenses and transitioned to a relative reduction for blacks for the most serious Felony A, B, and C categories. The race x criminal history interaction was not significant for the length decision.

Conclusions

There is some support for the liberation hypothesis in this test from a non-guidelines jurisdiction. The findings suggest, however, that the decision to incarcerate and the sentence length decision may employ different processes in which the interactions between race and seriousness measures vary.