A note on theta reliability and metric invariance

Vernon L. Greene

Research output: Contribution to journalArticlepeer-review


A basic problem in empirical research using internal consistency reliability coefficients such as Cronbach's alpha is that the coefficients are sensitive to scale changes in the data. This leads to problems in cross-study comparison where the same variables are perhaps being measured, but in different units, and in substantive theoretical generalization, which must always be qualified in terms of a specified metric. In this note we show that coefficient theta, recently put forth by David J. Armor, does not have this defect—a property which should commend its application in sociological research.

Original languageEnglish (US)
Pages (from-to)123-128
Number of pages6
JournalSociological Methods & Research
Issue number1
StatePublished - Aug 1977

ASJC Scopus subject areas

  • Social Sciences (miscellaneous)
  • Sociology and Political Science


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