Grading bias is easier to prove on which type of tests?

The correct answer centers on the nature of objective tests, which consist of questions that have clear, definitive answers, such as multiple-choice or true/false questions. Since the scoring criteria for objective tests are straightforward and based on whether the answer is right or wrong, it significantly reduces opportunities for grading bias. The grading process is generally automated or standardized, making it less susceptible to personal interpretation.

In contrast, subjective tests, like essays or oral exams, require evaluators to interpret responses and apply judgment. This subjectivity introduces variability based on the evaluator's personal biases, experiences, or teaching approaches. While grading bias can still occur with objective tests—such as if a question is flawed or misleading—the inherent structure of these tests typically allows for consistent application of grading standards, identifying it as less prone to bias compared to subjective assessments.