Session VII Coding And Analysis Of Data

Behavior Research Methods, Instruments, & Computers

, Volume 22, Issue 2, pp 167-175

First online:

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

  • Ron D. HaysAffiliated withRAND Corporation
  • , Toshi HayashiAffiliated withOffice of Research, California State Assembly


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.