What characteristic does a written test possess if it yields consistent results?

A written test that yields consistent results is demonstrating the characteristic of reliability. Reliability refers specifically to the consistency of scores obtained from the test over time, across different populations, or under different conditions. If a test consistently produces similar results when taken multiple times or by different groups, it is considered reliable.

This characteristic is crucial in assessments, as it implies that the measurement is stable and dependable, which helps ensure that test scores accurately reflect the knowledge or skills being measured rather than random variations or errors.

In contrast, validity pertains to how well the test measures what it is intended to measure, discrimination relates to the test's ability to differentiate between varying levels of knowledge or performance, and comprehensiveness concerns the extent to which the test covers the content it is supposed to evaluate. While these aspects are important in evaluating a test's overall usefulness, reliability specifically addresses the consistency of test results, making it the correct answer in this context.