Research on police pursuits: advantages of multiple data collection strategies

Abstract

Presents an investigation of the perennial problem of collecting valid empirical data on police vehicle pursuits, an organizationally sensitive and often controversial behavior, through a new data collection strategy using police emergency radio transmissions. Analyzes taped vehicle pursuits recorded on the Illinois State Police Emergency Radio Network and codes them for content as a data source on police vehicle pursuits. Compares these radio‐transmission data with more conventional pursuit data collection methods, e.g. administrative/official data, elicited‐pursuit‐reporting‐form data, and officer‐self‐report data. Evaluates these as an alternative or supplemental data window for empirically studying the incidence and content of police vehicle pursuits. While some differences appear, results from emergency‐channel radio transmission data largely converge with earlier findings from more conventional data collections. Divergent findings, which are few, appear to be largely the artifacts of different samplings of pursuits that the different data collection methods yield, rather than a result of differential validity.