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Thomas H. Resolving the test–retest agreement or reliability dilemma. METHODOLOGICAL INNOVATIONS 2017. [DOI: 10.1177/2059799117703121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Agreement refers to the degree to which an individual i’s test scores match in test–retest settings. Agreement has been thought to be unapproachable with correlational reliability indices. Stable unstable reliability theory extends Spearman’s reliability model and specifies the probability that i’s test–retest true scores match. Thus, agreement and reliability are simultaneously addressed. Two examples, one using longitudinal data, illustrate the procedure.
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Affiliation(s)
- Hoben Thomas
- Department of Psychology, Pennsylvania State University, University Park, PA, USA
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