Using the cumulative common log-odds ratio to identify differential item functioning of rating scale items in the exercise and sport sciences

Randall D. Penfield, Nicholas D. Myers, Peter R. Giacobbi

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

One aspect of construct validity is the extent to which the measurement properties of a rating scale are invariant across the groups being compared. An increasingly used method for assessing between-group differences in the measurement properties of items of a scale is the framework of differential item functioning (DIF). In this paper we introduce the concept of DIF as a validation tool for scales used in physical education and exercise science, and illustrate the use of the cumulative common log-odds ratio for assessing the presence of DIF with data from the Exercise Imagery Inventory (EII; Giacobbi, Hausenblas, & Penfield, 2005).

Original languageEnglish (US)
Pages (from-to)451-464
Number of pages14
JournalResearch Quarterly for Exercise and Sport
Volume78
Issue number5
DOIs
StatePublished - Dec 2007

Keywords

  • Psychometrics
  • Research methods
  • Statistics
  • Validity

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Psychology(all)
  • Applied Psychology

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