What is reliability in measurement determined by?

Reliability in measurement refers to the consistency and stability of a measurement tool or assessment over time. It indicates the degree to which an instrument produces stable and consistent results across different administrations or circumstances. The standard error of measurement is a statistical estimate that reflects the amount of error associated with a measurement. A smaller standard error indicates greater reliability, as it suggests that the scores obtained are more likely to accurately represent the true skill level or attribute being measured.

In contrast, student feedback, peer reviews, and classroom observations may provide valuable insights and qualitative information, but they do not quantitively assess the reliability of measurements. These alternatives focus on subjective experiences or observations rather than statistical measures of consistency, which makes the standard error of measurement the only choice that accurately determines reliability in the context of assessment.