What are the assumptions of Cronbach's alpha? Does Cronbach's alpha assume unidimensionality?

This paper aims to guide assessment developers in paediatric occupational therapy, as well as practitioners who are evaluating outcome measures. Cronbach's alpha is the most common measure of internal consistency ("reliability"). It is most commonly used when you have multiple Likert questions in a ... Dec 4, 2010 ... This application performs a basic Cronbach's alpha analysis on data provided by the user. The data may be supplied as numerical scores or ... Dec 28, 2017 ... : Ideal Response Time and Delusion of Cronbach's Alpha. Journal of Measurement and Evaluation in Education and Psychology, 8(4), 344-353 ... This commentary provides additional clarity regarding the language used when describing and interpreting alpha and other estimates of reliability. Cronbach's alpha estimates the internal consistency of responses in multi-item bipolar scales. This article examined three research questions (RQ): (1) To ... a: Cronbach's alpha reliabilityscores reported in the literature; b. : Cronbach's alpha reliability scores found in our study. Supplemental Table 1 ... Apr 16, 2020 ... The first Cronbach's alpha employs the covariances among the items, whereas the alpha based on standardized items employs the correlations among items. M. Tavakol and R. Dennick, “Making Sense of Cronbach's Alpha,” International Journal of Medical Education, Vol. 2, 2003, pp. Nov 30, 2022 ... In the analysis output window, click on the red triangle menu under the Multivariate header, and then select Item Reliability ▻ Cronbach's α, or ...