Psychology · Psychometrics & Measurement
A topic within Psychometrics & Measurement, itself one of 9 topics in that field and part of Psychology.
2 works
Mohsen Tavakol and Reg Dennick
Argues that alpha measures the interrelatedness of items rather than unidimensionality, so a high value can mask a multidimensional scale and is routinely over-interpreted as proof of reliability.
link checked 17 Sept 2026Lee J. Cronbach
Derives a single coefficient, alpha, that estimates a test's internal-consistency reliability from one administration, generalising and unifying earlier split-half reliability formulas into the measure now reported for almost every psychological scale.
link checked 17 Sept 2026