Validation of a short aggression inventory for law enforcement

This study cross-validates a short aggression inventory using a sample of 250 law enforcement professionals. The instrument under investigation is the 12-question modified version of the Buss-Perry Aggression Scale (Buss & Perry, 1992). Statistical and external validation methods were used to ascertain the appropriateness of this scale's use with law enforcement professionals. Confirmatory factor analyses revealed that both the firstorder, four-factor model, {ie12-1}, GFI=.94, NFI=.84, NNFI=.88, and CFI=.91, and the second-order model with a single, global Aggression “super” factor, {ie12-2}, GFI=.94, NFI=.84, NNFI=.89, and CFI=.91, provided a reasonable goodness-of-fit to the data. Subscales of this instrument correlated meaningfully with departmental measures of citizen complaints for physical and verbal aggression by officers, as well as the number of shooting incidents in which the officers were involved. The need for a short measure of aggression is discussed and applications in law enforcement are offered.