What type of rater error did Carlos commit when he evaluated his psychology professor low based on a negative overall impression?

The situation described involves Carlos evaluating his psychology professor poorly due to a negative overall impression, which aligns with the horns error. This type of rater error occurs when a rater allows their negative feelings or impressions about an individual to influence their evaluations or assessments, leading to unfairly low ratings. Essentially, the rater focuses on one negative aspect and allows it to overshadow all other characteristics or competencies of the individual being evaluated.

In this case, Carlos's negative perception likely colored his evaluation of the professor’s performance. By focusing on the negative impression instead of an objective assessment of the professor’s abilities and contributions, Carlos fell into the horns error, demonstrating how emotional biases can adversely affect performance evaluations in an educational context.