This document discusses performance appraisals, including their definition, purpose, advantages, methods, and potential biases. Performance appraisals are used to evaluate employees, provide feedback, determine training needs, and make decisions about compensation, promotion, and retention. They have advantages like employee development, motivation, and communication. Common methods include critical incident reports, weighted checklists, rating scales, management by objectives, and 360 degree feedback. Potential biases can come from first impressions, halo effects, central tendency ratings, and personal biases of the evaluator.