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 language | English (US) |
|---|---|
| Pages (from-to) | 451-464 |
| Number of pages | 14 |
| Journal | Research Quarterly for Exercise and Sport |
| Volume | 78 |
| Issue number | 5 |
| DOIs | |
| State | Published - 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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Penfield, R. D., Myers, N. D., & Giacobbi, P. R. (2007). Using the cumulative common log-odds ratio to identify differential item functioning of rating scale items in the exercise and sport sciences. Research Quarterly for Exercise and Sport, 78(5), 451-464. https://doi.org/10.1080/02701367.2007.10599445