Cronbach's alpha (Cronbach's ), also known as tau-equivalent reliability () or coefficient alpha (coefficient ), is a reliability coefficient and a measure of the internal consistency of tests and measures.[1][2][3] It was named after the American psychologist Lee Cronbach.
^Cronbach, Lee J. (1951). "Coefficient alpha and the internal structure of tests". Psychometrika. 16 (3). Springer Science and Business Media LLC: 297–334. doi:10.1007/bf02310555. hdl:10983/2196. S2CID13820448.
^Cronbach, L. J. (1978). "Citation Classics"(PDF). Current Contents. 13: 263. Archived(PDF) from the original on 2022-01-20. Retrieved 2021-03-22.
^Revelle, W.; Zinbarg, R. E. (2009). "Coefficients alpha, beta, omega, and the glb: Comments on Sijtsma". Psychometrika. 74 (1): 145–154. doi:10.1007/s11336-008-9102-z. S2CID5864489.
^Cho, E.; Kim, S. (2015). "Cronbach's coefficient alpha: Well known but poorly understood". Organizational Research Methods (2): 207–230. doi:10.1177/1094428114555994. S2CID124810308.
^Cronbach, L. J.; Shavelson, R. J. (2004). "My Current Thoughts on Coefficient Alpha and Successor Procedures". Educational and Psychological Measurement. 64 (3): 391–418. doi:10.1177/0013164404266386. S2CID51846704.