ERIC Number: ED395950
Record Type: RIE
Publication Date: 1996-Jan-25
Influences on and Limitations of Classical Test Theory Reliability Estimates.
Arnold, Margery E.
It is incorrect to say "the test is reliable" because reliability is a function not only of the test itself, but of many factors. The present paper explains how different factors affect classical reliability estimates such as test-retest, interrater, internal consistency, and equivalent forms coefficients. Furthermore, the limits of classical test theory are demonstrated, and it is recommended that researchers, teachers, and psychologists instead utilize generalizability-theory estimates of reliability. Heuristic examples and detailed explanations make this discussion accessible even to those who are uninitiated in either classical test theory or generalizability theory. (Contains 2 figures, 10 tables, and 18 references.) (Author)
Publication Type: Reports - Evaluative; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Note: Paper presented at the Annual Meeting of the Southwest Educational Research Association (New Orleans, LA, January 25, 1996).