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ERIC Number: EJ1180391
Record Type: Journal
Publication Date: 2013-May
Pages: 5
Abstractor: As Provided
ISSN: ISSN-0119-5646
Coefficient Alpha and Beyond: Issues and Alternatives for Educational Research
Teo, Timothy; Fan, Xitao
Asia-Pacific Education Researcher, v22 n2 p209-213 May 2013
Cronbach's coefficient alpha has been widely known and used in educational research. Many education research practitioners, however, may not be aware of the potential issues when the main assumptions for coefficient alpha are violated in research practice. This paper provides a brief discussion about two assumptions that may make the use and interpretation of coefficient alpha less appropriate in education research: violations of the tau-equivalence model assumption and the error independence assumption. Violation of either or both of these assumptions will have negative effects on the precision of coefficient alpha as reliability estimate. The paper further presents two alternative reliability estimates without the assumptions of tau-equivalence or error independence. Research practitioners may consider these and other alternatives, when measurement data may not satisfy the assumptions for coefficient alpha.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A