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Scale reliability: A primer and calculator

Version 2 2025-05-14, 22:37
Version 1 2023-05-05, 04:04
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posted on 2025-05-14, 22:37 authored by Gavin T. L. BrownGavin T. L. Brown

This document gives an introductory primer to understanding scale reliability indices. I indicate the weakness of Cronbach's alpha and recommend McDonald's omega instead. In the context of CFA or SEM, I recommend and explain how to calculate Hancock's Coefficient H. I have added an Excel spreadsheet to download to facilitate calculation of Coefficient H.

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