Consistency and Construct Validity of the Five-Level System for Risk Communication Using Static and Dynamic Tools: An Investigation Using the Static-99R and VRS-SO

This study examined the Council of State Governments’ five-level system for risk communication, as applied to the Static-99R and Violence Risk Scale–Sexual Offense Version (VRS-SO). Aims of the system include increasing consistency in risk communication and linking risk categories to psychologically meaningful constructs. We investigated concordance between risk levels assigned by the instruments, and distributions of VRS-SO dynamic needs associated with Static-99R risk levels, among a multisite sample (n = 1,404) of persons who have sexually offended. Concordant categorical risk ratings were assigned in just over a third of cases, suggesting that consistency remains a concern with the system, particularly when conceptually disparate tools are applied. Densities of criminogenic needs varied widely among persons assigned the same risk level by the Static-99R and diverged from the descriptions ascribed by the system. These findings can inform clinical assessments and further refinement of the system.