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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

Showing all 4 results
Investigating the Structure of the WJ-III Cognitive in Early School Age through Two Exploratory Bifactor Analysis Procedures
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Dombrowski, Stefan C. – Journal of Psychoeducational Assessment, 2014
Two exploratory bifactor methods (e.g., Schmid-Leiman [SL] and exploratory bifactor analysis [EBFA]) were used to investigate the structure of the Woodcock-Johnson III (WJ-III) Cognitive in early school age (age 6-8). The SL procedure is recognized by factor analysts as a preferred method for EBFA. Jennrich and Bentler recently developed an…
Descriptors: Cognitive Tests, Factor Analysis, Factor Structure, Young Children
Exploratory Bifactor Analysis of the WJ-III Cognitive in Adulthood via the Schmid-Leiman Procedure
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Dombrowski, Stefan C. – Journal of Psychoeducational Assessment, 2014
The Woodcock-Johnson-III cognitive in the adult time period (age 20 to 90 plus) was analyzed using exploratory bifactor analysis via the Schmid-Leiman orthogonalization procedure. The results of this study suggested possible overfactoring, a different factor structure from that posited in the Technical Manual and a lack of invariance across both…
Descriptors: Cognitive Tests, Adults, Factor Analysis, Factor Structure
An Exploratory Investigation of the Factor Structure of the Reynolds Intellectual Assessment Scales (RIAS)
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Dombrowski, Stefan C.; Watkins, Marley W.; Brogan, Michael J. – Journal of Psychoeducational Assessment, 2009
This study investigated the factor structure of the Reynolds Intellectual Assessment Scales (RIAS) using rigorous exploratory factor analytic and factor extraction procedures. The results of this study indicate that the RIAS is a single factor test. Despite these results, higher order factor analysis using the Schmid-Leiman procedure indicates…
Descriptors: Intelligence Tests, Factor Analysis, Factor Structure, Decision Making
Investigating the Theoretical Structure of the Stanford-Binet-Fifth Edition
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DiStefano, Christine; Dombrowski, Stefan C. – Journal of Psychoeducational Assessment, 2006
The fifth edition of the Stanford-Binet test went through significant reformulation of its item content, administration format, standardization procedures, and theoretical structure. Additionally, the test was revised to measure five factors important to intelligence across both verbal and nonverbal domains. To better understand these substantial…
Descriptors: Intelligence Tests, Test Construction, Factor Structure, Factor Analysis