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.

The World Bank and social capital: Lessons from ten rural development projects in the Philippines and Mexico

Social capital is widely recognized as one of the few sources of capital available to the poor, yet the processes by which development policies affect the accumulation of that social capital are not well understood. The World Bank, through its funding of development projects, affects the institutional environments for the accumulation of such social capital. The question is how to determine whether that institutional context is enabling, and to what degree. This paper compares ten recent World Bank-funded rural development projects in Mexico and the Philippines to explore how the processes of project design and implementation influence the institutional environments for the accumulation of horizontal, vertical, and intersectoral forms of pro-poor social capital. The findings have conceptual and policy implications for understanding the political dynamics of creating enabling environments for social capital accumulation by the poor.     

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His latest book is Reproduction and Succession: Studies in Anthropology, Law, and Society,published by Transaction. A collection of essays, The Challenge of Anthropology: Old Encounters and New Excursions,is forthcoming from the same publisher.