Which of the following is a key characteristic of a test with high reliability?

A test with high reliability is characterized by its ability to produce consistent results under repeated measures. Reliability refers to the consistency and stability of test scores across multiple administrations or iterations. When a test yields similar results over time, regardless of external factors, it demonstrates high reliability.

For instance, if a test measuring a specific construct is administered to the same group of individuals multiple times and the scores do not fluctuate significantly, this indicates that the test is reliable. This consistency ensures that the scores obtained are reflective of the actual ability or trait being measured rather than being influenced by random errors or variations.

In contrast, options that focus on content range, assessment of multiple constructs, or ease of administration do not directly pertain to the concept of reliability. While these factors can contribute to the overall effectiveness and utility of a test, they do not specifically indicate how consistently a test performs in yielding results. Thus, the key focus for identifying a test with high reliability centers on its ability to provide stable outcomes across different testing situations.