Stereotypes can produce inaccurate results for employees who belong to a certain group of people. Self-fulfilling prophecies can influence performance evaluation, such as when a manager expects an employee to fail, then the employee will certainly fail. Fundamental attribution error is attributing one's successes to internal causes and one's failures to external causes. The halo effect can trigger a judgment on a limited number of dimensions. “Availability is another source of bias that influences ratings in their performance evaluations (Youssef, C., 2015).” These common biases can affect an employee's morale and cause performance problems. A performance evaluation can be judged on how well it achieves its strategic objectives. Performance reviews can help you tailor performance reviews to meet the needs of the company. A performance appraisal is necessary to help achieve company goals and objectives. It is used to promote from within and recruit the right candidate applying for a job with