The extent to which a measure yields the same scores across different times, groups of people, or versions of the instrument, is called:

The correct answer is Reliability
Important Points

The extent to which a measure yields consistent and stable results across different times, groups of people, or versions of the instrument is called reliability. In research and assessment, reliability is a crucial aspect that indicates the consistency and dependability of the measurement or instrument being used.

• Reliability is typically assessed using various statistical methods and techniques.
• Some commonly used measures of reliability include test-retest reliability, which examines the consistency of scores over time, and internal consistency reliability, which assesses the consistency of scores across different items or subscales within a measure.
• High reliability indicates that the measure produces consistent results and minimizes measurement error, allowing for more accurate and dependable interpretations of the data.
• Reliability is a fundamental property of any measurement instrument and is essential for establishing the trustworthiness and validity of research findings.