Behavior Research Methods, Instruments, & Computers

, Volume 22, Issue 2, pp 167–175

Beyond internal consistency reliability: Rationale and user’s guide for Multitrait Analysis Program on the microcomputer


  • Ron D. Hays
    • RAND Corporation
  • Toshi Hayashi
    • Office of ResearchCalifornia State Assembly
Session VII Coding And Analysis Of Data

DOI: 10.3758/BF03203140

Cite this article as:
Hays, R.D. & Hayashi, T. Behavior Research Methods, Instruments, & Computers (1990) 22: 167. doi:10.3758/BF03203140


A methodology for evaluating Likert-type scales is presented. Multitrait scaling is a straightforward approach to scale analysis that focuses on items as the unit of analysis and utilizes the logic of convergent and discriminant validity. Multitrait scaling is illustrated with the Multitrait Analysis Program, using patient satisfaction data from the Medical Outcomes Study.

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© Psychonomic Society, Inc. 1990