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DeVellis has more than 35 years of experience in the measurement of psychological and social variables. He has been an active member of the Patient-Reported Exercises Chapter 5: Guidelines in Scale Development Step 1: Determine Robert F. Devellis; Published 1991; Computer Science, Psychology, Sociology. Request PDF | On Jan 1, 2003, R.F. DeVellis published Scale development: theory and applications, applied social research methods. Sage Publications | Find Read "Scale Development Theory and Applications" by Dr. Robert F. DeVellis available from Rakuten Kobo. In the Fourth Edition of Scale Development, Robert Dec 3, 2014 -Thousand Oaks, Calif. : SAGE, - Applied social research methods series ; v. 26. 205 pages, 2012, English, Book; Illustrated, 24 & Not available online. Scale Get this from a library! Scale development : theory and applications. [Robert F DeVellis] Scale Development: Theory and Applications (4th ed.) (Applied Social Research Methods series) by Robert F. DeVellis. Request PDF | On Jan 1, 2003, Robert F. DeVellis published Scale Development: Theory and Applications (Ed.p.1-113) | Find, read and cite all the research you 179. Book Reviews. Scale Development: Theory and Applications, by Robert F. Devellis. Newbury Park, CA: Sage,. 1991, 121 pp. Reviewed by: DAVID M.