Injuries inflicted on homicide victims: A longitudinal victiminologic study of lethal violence

For the purpose of studying homicidal violence from a victiminologic point of view, we have examined the number and nature of injuries inflicted on homicide victims examined at the Department of Forensic Medicine in Stockholm during the periods 1976–1978, 1986–1988 and 1996–1998. Evaluation of the total number of injuries (both lethal and non-lethal) revealed a break in the earlier trend during the last of these periods, which demonstrated a clear increase in the number of injuries probably caused by intense and prolonged violence. Thus, there were 14 victims with 40 or more injuries (the maximum being 101 injuries) in the 1996–1998 period, whereas there was only one such victim in each of the two earlier periods. Furthermore, the proportion of victims exhibiting multiple lethal injuries was greater during the last period than during the two preceding periods. These findings indicate a general enhancement in the level of aggression exerted by violent offenders, as well as an increase in the number homicide victims with injuries apparently inflicted by acts of aggression characterized by outrage.     

SOCIAL ORGANIZATION AND INSTRUMENTAL CRIME: ASSESSING THE EMPIRICAL VALIDITY OF CLASSIC AND CONTEMPORARY ANOMIE THEORIES*

This research assesses the empirical validity of the classic anomie theory articulated by Robert Merton and the important contemporary extension of his work encompassed in Messner and Rosenfeld's institutional anomie theory. Using a unique aggregate‐level data set, our empirical investigation reveals that, consistent with theoretical expectations, instrumental crime rates are significantly higher in areas where both a strong commitment to monetary success goals and a weak commitment to legitimate means exist. The tendency for this “goals/means” value complex to translate into higher rates of instrumental crime is reduced in the context of higher levels of welfare assistance and more frequent socializing among families. We also find that low levels of educational and economic attainment and high levels of inequality enhance the degree to which commitment to monetary success translates into instrumental crime. Overall, the findings are supportive of some claims by classic and contemporary anomie theories, but also they point to the need for further refinement of these perspectives and additional assessments of their empirical validity.     

Addressing the National Academy of Sciences' challenge: a method for statistical pattern comparison of striated tool marks

In February 2009, the National Academy of Sciences published a report entitled "Strengthening Forensic Science in the United States: A Path Forward." The report notes research studies must be performed to "…understand the reliability and repeatability…" of comparison methods commonly used in forensic science. Numerical classification methods have the ability to assign objective quantitative measures to these words. In this study, reproducible sets of ideal striation patterns were made with nine slotted screwdrivers, encoded into high-dimensional feature vectors, and subjected to multiple statistical pattern recognition methods. The specific methods employed were chosen because of their long peer-reviewed track records, widespread successful use for both industry and academic applications, rely on few assumptions on the data's underlying distribution, can be accompanied by standard confidence levels, and are falsifiable. For PLS-DA, correct classification rates of 97% or higher were achieved by retaining only eight dimensions (8D) of data. PCA-SVM required even fewer dimensions, 4D, for the same level of performance. Finally, for the first time in forensic science, it is shown how to use conformal prediction theory to compute identifications of striation patterns at a given level of confidence.     

Crime Volume and Law and Order Culture

The literature on public opinion about crime and justice has neglected the exploration of macro‐ or community‐level influences on individual‐level attitudes. A key macrofactor that may be related to individual level attitudes is the volume of violent crime. High crime rates can facilitate the development of a culture of “law and order,” a response that may be a practical or instrumental attempt to control crime. The present paper tests the hypothesis that persons residing in nations marked by a high volume of crime will be more likely to adhere to elements of a law and order culture. It employs data from the International Social Science Program (N = 15,024). Controls are taken from major theoretical perspectives on public opinion about crime as well as demographic factors. The results from a hierarchical linear model support the hypothesis that individuals residing in nations with high crime rates are more likely than others to support law and order ideologies. The findings extend the support for this relationship from research based on the US alone to other industrialized societies.     

Death wearing a badge--a study of police officers who died in the line of duty in Metro Dade County from 1956 to 1982

A study of police officers who died in the line of duty in Metro Dade County, U.S.A. was performed. All cases in which a law enforcement officer died while on duty or, off duty while performing police action were collected from the files of the Medical Examiner Department from 1956 to 1982. Cases were then analyzed as to age, race, sex, cause and manner of death, scene circumstances, alcohol and drugs detected at autopsy. A total of 37 cases was studied.     

对三十例残害女性系列杀人案的实证分析

系列杀人犯罪案件数量近年来有明显上升趋势,其中以女性为侵害目标的系列杀人案件占大多数.本文对30起案例中的犯罪人从9个维度、被害人从3个维度进行实证分析,结论认为:(1)系列杀人犯罪有一定规律性;(2)被害人中有一部分属于有责任被害人;(3)系列杀人犯罪人不全是变态者.基于上述分析,我们提出预防系列杀人案件发生、提高社会综合治理能力的启示,以期为预防、减少此类恶性案件的发生提供依据.     

Conclusion: International Political Economy—The Reverse Salient of Innovation Theory

This conclusion attempts to answer three sets of questions regarding our experiment in cross-field collaboration: What did we find and were these findings cohesive? What did our findings add to the debate? What are the implications of our findings, and, more importantly, what's next? It suggests that politics have become a "reverse salient" in innovation theory. Specifically, innovation scholars have yet to devise a theory that fully incorporates distributive politics and their security and competitiveness implications into a general explanation of technological change. This gap is holding back progress in fields that depend on innovation as an explanatory variable. It should therefore be made a priority for innovation scholars across the social sciences.     

Not ‘Islands,Entire of Themselves’: Exploring the Spatial Context of City-level Robbery Rates

The current study examines spatial dependence in robbery rates for a sample of 1,056 cities with 25,000 or more residents over the 2000–2003 period. Although commonly considered in some macro-level research, spatial processes have not been examined in relation to city-level variation in robbery. The results of our regression analyses suggest that city robbery rates are not spatially independent. We find that spatial dependence is better accounted for by spatial error models than by spatial lag models. Further exploration of various spatial weights matrices indicates that robbery rates of cities within the same state are related to robbery rates of other cities within the same state, regardless of their proximity. Our analyses illustrate how systematic inquiry into spatial processes can alert researchers to important omitted variable biases and identify intriguing problems for future research.

A comparison of memory for homicide, non-homicidal violence, and positive life experiences

Defendants commonly claim amnesia for their criminal actions especially in cases involving extreme violence. While some claims are malingered or result from physiological factors, other cases may represent genuine partial or complete amnesia resulting from the psychological distress and/or extreme emotion associated with the perpetration of the crime. Fifty Canadian homicide offenders described their memories of their homicide, a non-homicide violent offense, and their most positive adulthood life experience. Self-reported and objective measures of memories for these events revealed that homicides were recalled with the greatest level of detail and sensory information. Although dissociative tendencies were associated with a self-reported memory loss, objective measures of memory quality did not reflect this perceived impairment, suggesting a failure of meta-memory. Recollections of positive life events were superior to those of non-homicidal violence, possibly due to greater impact and meaning attached to such experiences. Findings suggest that memory for homicide typically is enhanced by the powerful emotion associated with its perpetration.     

Multiple Imputation of the Supplementary Homicide Reports, 1976–2005

The Supplementary Homicide Reports (SHR), assembled by the Federal Bureau of Investigation (FBI), have for many years represented the most valuable source of information on the patterns and trends in murder and non-negligent manslaughter. Despite their widespread use by researchers and policy makers alike, these data are not completely without their limitations, the most important of which involves missing or incomplete incident reports. In this analysis, we develop methods for addressing missing data in the 1976–2005 SHR cumulative file, related to both non-reports (unit missingness) and incomplete reports (item missingness). For incomplete case data (that is, missing characteristics on victims, offenders or incidents), we implement a multiple imputation (MI) approach based on a log-linear model for incomplete multivariate categorical data. Then, to adjust for unit missingness, we adopt a weighting scheme linked to FBI annual estimates of homicide counts by state and National Center for Health Statistics mortality data on decedent characteristics in coroners’ reports for deaths classified as homicide. The result is a fully-imputed SHR database for 1976–2005. This paper examines the effects of MI and case weighting on victim/offender/incident characteristics, including standard errors of parameter estimates resulting from imputation uncertainty.