Thehalo effectoccurs when a manager gives an employee an overall performance rating based on one positive trait (e.g., interpersonal skills) while ignoring other areas (e.g., technical skills). This cognitive bias skews the evaluation toward one aspect of the employee's performance.
* Explanation of Other Options:
* B. A contrast error: Happens when an employee is compared to others rather than an objective standard.
* C. A strictness error: Refers to consistently rating employees lower than deserved.