Consistency refers to the reliability of a measurement or test over time, across different parts of the same test, or among different raters. It indicates the degree to which the results of a measurement are stable and dependable.
Related terms
Test-Retest Reliability: This term refers to measuring consistency by administering the same test to the same group of individuals at two different points in time.
Split-Half Reliability: Split-half reliability is a measure of consistency obtained by splitting a test into two halves and comparing scores between them.
Inter-Rater Reliability: Inter-rater reliability assesses consistency among different raters who are observing and rating the same behavior or phenomenon.