Test reliability is typically assessed through several methods:
- Test-Retest Reliability: This measures the stability of test results over time. A test is administered to the same group on two different occasions, and the results are compared. High correlation indicates high reliability. - Inter-Rater Reliability: This assesses the consistency of test results when administered by different individuals. It is crucial for tests requiring subjective interpretation. - Internal Consistency: This evaluates the extent to which items within a test measure the same construct. Commonly assessed using Cronbach's alpha, a higher value indicates better reliability.
