validity and reliability

Content Validity

The extent to which a test covers all aspects of the concept it is designed to measure.

Predictive Validity (Criterion-Related Validity)

The ability of a test to accurately predict future performance on related tasks.

Construct Validity

The extent to which a test actually measures the abstract concept it claims to measure, aligning with established theories.

Test-Retest Reliability

A measure of consistency where the same test administered to the same group at different times yields similar scores.

Split-Half Reliability

A method of assessing reliability where a test is split into two halves and the scores from both halves are compared.

Inter-Rater Reliability

The level of agreement between different scorers evaluating the same test, indicating the reliability of the test.