Can a scale be reliable but not homogeneous?

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 ... Jun 18, 2020 ... Researchers typically use Cronbach's Alpha when they want to know how much variance is item-specific and not shared by other items in the set. May 25, 2016 ... The results show that omega coefficient is always better choice than alpha and in the presence of skew items is preferable to use omega and glb ... Aug 29, 2022 ... Cronbach's alpha. Cronbach's alpha was first described in an article in 1951 (1) and has since been by far the most frequently used measure of ... Share 'Cronbach's Alpha' ... This function calculates the Cronbach's alpha by quantitative answers of a questionnaire. The questionnaire's answers have to be a 2- ... A negative number indicates that something is wrong with your data—perhaps you forgot to reverse score some items. The general rule of thumb is that a ... Cronbach's alpha. BMJ. 1997 Feb 22;314(7080):572. doi: 10.1136/bmj.314.7080.572. Authors. J M Bland , ... Feb 3, 2023 ... We examined whether α values reported in the psychology literature are inflated at the rule-of-thumb thresholds (α = .70, .80, .90) due to, for example, ... Cronbach's alpha is perhaps the most common estimate of internal consistency of items in a scale (Cronbach, · The statistic “typically” ranges from 0.00 to 1.00, ... Dec 30, 2016 ... Cronbach's alpha demonstrates the internal consistency based on average correlation or the co-variances of items in a survey instrument or ...