Assessment Reliability and Validity: Key Concepts
Classified in Psychology and Sociology
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Understanding Reliability
Reliability refers to the degree to which an assessment tool produces stable and consistent results. It focuses on the consistency of the assessment.
- Interrater Reliability: Assesses whether different observers are consistent in their judgments.
- Test-Retest Reliability: Evaluates the consistency of a test across different administrations over time.
- Parallel Forms Reliability: Compares two different versions of a test that measure the same construct with different, but equivalent, questions.
- Internal Consistency Reliability: Measures the consistency of results across items within a single test. This can be assessed through:
- Average Inter-Item Correlation: Calculates the average of all correlation coefficients between individual