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Educational and Psychological Measurement
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An Examination of the Factor Structure and Construct Validity of the Gregorc Style Delineator

Thomas G. Reio, Jr.

University of Louisville, thomas.reio{at}louisville.edu

Albert K. Wiswell

Virginia Polytechnic Institute and State University, Blacksburg

Cognitive learning style instruments continue to enjoy widespread use in educational and occupational contexts by researchers and practitioners alike, despite widespread questions about the valid measurement of cognitive learning styles. This investigation examines the psychometric properties of one well-known measure of cognitive learning style—the Gregorc Style Delineator (GSD). The GSD was administered to 467 undergraduate and graduate students (49% female) from two major colleges in the mid-Atlantic region of the United States. Using confirmatory and exploratory factor-analytic techniques, Gregorc’s channel theory was investigated as deployed and represented by the instrument. The Cronbach’s alpha coefficients, ranging from .54 to .68, were appreciably lower than those reported by the instrument’s developer. The data disconfirmed both the two- and four-factor confirmatory models. In the post hoc exploratory factor analyses, many of the factor pattern/structure coefficients were ambiguously associated with two or more of the four theoretical channels as well. Overall, there was little support for the GSD’s theoretical basis or design and the concomitant accurate portrayal of one’s cognitive learning style.

Key Words: Gregorc Style Delineator • learning styles • confirmatory factor analysis • validity

Educational and Psychological Measurement, Vol. 66, No. 3, 489-501 (2006)
DOI: 10.1177/0013164405282459
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