What aspect of assessments does reliability primarily address?

Reliability in the context of assessments primarily addresses the consistency of assessment results. It refers to the degree to which an assessment produces stable and consistent results over time, across different populations, or under varying conditions. For instance, if a student takes the same test on two different occasions and scores similarly, the assessment is considered reliable. This quality is crucial because it ensures that the results are dependable and reflect the true capabilities of the test-taker rather than random variations.

While accuracy of results and the content or format of assessments are important aspects of overall assessment quality, they are not the main focus of reliability. Accuracy pertains more to validity, which assesses whether the test measures what it is intended to measure. Additionally, the content and format relate to how the assessment is constructed rather than the stability of the outcomes it produces. Hence, the emphasis of reliability on consistency is what sets it apart as a key characteristic in evaluating assessments.