When a test measures an individual’s ability consistently accurately, then that test is known as -

Correct option is B

A test is considered reliable if it measures an individual's ability consistently and accurately across different occasions, forms, or raters. Reliability ensures that the test results remain stable and reproducible when administered multiple times under similar conditions. It is a crucial criterion in psychological and educational testing to ensure the accuracy and dependability of assessment outcomes.

Information Booster:

• Reliability refers to the consistency of test scores over repeated administrations.
• A reliable test minimizes errors caused by external factors such as test conditions or scorer bias.
• Types of reliability include:
  • Test-retest reliability – Checking consistency over time.
  • Inter-rater reliability – Ensuring agreement among different evaluators.
  • Split-half reliability – Measuring internal consistency within a test.
• A test can be reliable without being valid, but validity ensures that the test measures what it is intended to assess.
• High reliability increases the trustworthiness of a test, making it suitable for academic, psychological, and employment assessments.
• Reliability is measured using statistical methods, such as correlation coefficients (e.g., Cronbach’s alpha for internal consistency).