Item response theory and the measurement of motor behavior

Research Quarterly for Exercise and Sport
M J SafritM G Costa

Abstract

Item response theory (IRT) has been the focus of intense research and development activity in educational and psychological measurement during the past decade. Because this theory can provide more precise information about test items than other theories usually used in measuring motor behavior, the application of IRT in physical education and exercise science merits investigation. In IRT, the difficulty level of each item (e.g., trial or task) can be estimated and placed on the same scale as the ability of the examinee. Using this information, the test developer can determine the ability levels at which the test functions best. Equating the scores of individuals on two or more items or tests can be handled efficiently by applying IRT. The precision of the identification of performance standards in a mastery test context can be enhanced, as can adaptive testing procedures. In this tutorial, several potential benefits of applying IRT to the measurement of motor behavior were described. An example is provided using bowling data and applying the graded-response form of the Rasch IRT model. The data were calibrated and the goodness of fit was examined. This analysis is described in a step-by-step approach. Limitations to using an IR...Continue Reading

Citations

Sep 1, 1992·Research Quarterly for Exercise and Sport·M J SafritL Zhang
Dec 1, 1992·Research Quarterly for Exercise and Sport·M A Looney, J A Spray
Mar 1, 1996·Research Quarterly for Exercise and Sport·W Zhu, E L Cole
Sep 1, 1996·Research Quarterly for Exercise and Sport·M A LooneyD Castelli
Sep 1, 1996·Research Quarterly for Exercise and Sport·W Zhu
Oct 1, 1994·Perceptual and Motor Skills·W Zhu, K A Kurz
Oct 27, 2009·Best Practice & Research. Clinical Rheumatology·Hermine I Brunner, Angelo Ravelli
Jun 1, 2000·Research Quarterly for Exercise and Sport·J M Linacre
Jun 1, 2000·Research Quarterly for Exercise and Sport·W Zhu
Nov 16, 2007·Pediatric Physical Therapy : the Official Publication of the Section on Pediatrics of the American Physical Therapy Association·Valerie C WondraMichael W Beets

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