Performance appraisal is defined as the systematic review and evaluation of an employee's job performance and the provision of feedback. While the goal is for performance appraisals to be objective, rater biases can inadvertently influence ratings. Research on performance appraisals examines the best rating formats, the impact of rater errors and biases, and how social context affects the process. Additionally, performance appraisal systems must be considered within their cultural context as practices may not directly translate across cultures.