This document discusses various measures used to determine job performance, including production data, HR personnel data, training proficiency, judgmental data, absenteeism, turnover, grievances, accidents, promotions, and training proficiency. It describes the appropriate use and important characteristics of each type of measure, such as being individualized, controllable, relevant, measurable, reliable, and practical. It also discusses issues around developing behaviorally anchored rating scales, avoiding rater biases, and using single versus multiple criteria measures in validation studies.