The mixed standard rating scale: An evaluation

Abstract Supervisory and peer ratings obtained on mixed standard scales ( Blanz, F., & Ghiselli, E. E. Personnel Psychology , 1972, 25 , 185–199 ) were compared with ratings obtained on behaviorally anchored scales with respect to leniency and halo errors and interrater reliability. The ratees were all police patrol officers; peer raters were also patrol officers, while supervisory raters were first-line supervisors (usually sergeants). Supervisory and peer ratings were obtained in 10 and 7 different municipal police agencies, respectively. Mixed standard scales generally resulted in less positive leniency error and less halo error, but concomitant interrater reliabilities were frequently lower than those associated with behaviorally anchored scales. Logical and technical strengths and weaknesses of the mixed standard rating scale are discussed.