Cronbach’s Alpha is not a Measure of Unidimensionality or Homogeneity

Vahit Bademci

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Cronbach’s Alpha is not a Measure of Unidimensionality or Homogeneity

Abstract

Reliability is a characteristic of scores, not tests or measurement instruments. One of the methods to estimate the reliability of the scores on a test or measurement instrument is Cronbach’s coefficient alpha method. In other words, Cronbach’s alpha is an estimate of the score reliability based on the internal consistency among the [item] scores. In addition to this, Cronbach’s coefficient alpha should not be interpreted as a measure of the test’s or the measurement instrument’s unidimensionality or taken as an index of the homogeneity of a measurement instrument. Briefly, Cronbach’s alpha is not a measure of unidimensionality or homogeneity.

Keywords

Cronbach’s alpha, score reliability, misconception, unidimensionality, factor analysis

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Details

Primary Language

English

Subjects

-

Journal Section

Research Article

Authors

Vahit Bademci

Publication Date

September 1, 2014

Submission Date

June 28, 2014

Acceptance Date

-

Published in Issue

Year 2014 Volume: 2 Number: 3

IZ

https://izlik.org/JA98LH27DX

APA

Bademci, V. (2014). Cronbach’s Alpha is not a Measure of Unidimensionality or Homogeneity. Journal of Computer and Education Research, 2(3), 19-27. https://izlik.org/JA98LH27DX

AMA

1.Bademci V. Cronbach’s Alpha is not a Measure of Unidimensionality or Homogeneity. JCER. 2014;2(3):19-27. https://izlik.org/JA98LH27DX

Chicago

Bademci, Vahit. 2014. “Cronbach’s Alpha Is Not a Measure of Unidimensionality or Homogeneity”. Journal of Computer and Education Research 2 (3): 19-27. https://izlik.org/JA98LH27DX.

EndNote

Bademci V (September 1, 2014) Cronbach’s Alpha is not a Measure of Unidimensionality or Homogeneity. Journal of Computer and Education Research 2 3 19–27.

IEEE

[1]V. Bademci, “Cronbach’s Alpha is not a Measure of Unidimensionality or Homogeneity”, JCER, vol. 2, no. 3, pp. 19–27, Sept. 2014, [Online]. Available: https://izlik.org/JA98LH27DX

ISNAD

Bademci, Vahit. “Cronbach’s Alpha Is Not a Measure of Unidimensionality or Homogeneity”. Journal of Computer and Education Research 2/3 (September 1, 2014): 19-27. https://izlik.org/JA98LH27DX.

JAMA

1.Bademci V. Cronbach’s Alpha is not a Measure of Unidimensionality or Homogeneity. JCER. 2014;2:19–27.

MLA

Bademci, Vahit. “Cronbach’s Alpha Is Not a Measure of Unidimensionality or Homogeneity”. Journal of Computer and Education Research, vol. 2, no. 3, Sept. 2014, pp. 19-27, https://izlik.org/JA98LH27DX.

Vancouver

1.Vahit Bademci. Cronbach’s Alpha is not a Measure of Unidimensionality or Homogeneity. JCER [Internet]. 2014 Sep. 1;2(3):19-27. Available from: https://izlik.org/JA98LH27DX