Type of Document Dissertation Author Bickley, Patricia URN etd-06072006-124148 Title The three stratum theory of cognitive abilities : test of the structure of intelligence across the life span Degree PhD Department Educational Research Advisory Committee
Advisor Name Title Keith, Timothy Z. Committee Co-Chair Wolfle, Lee M. Committee Co-Chair Arditti, Joyce A. Committee Member Cross, Lawrence H. Committee Member Singh, Kusum Committee Member Keywords
- Intelligence tests
- Cognition Testing
Date of Defense 1993-07-09 Availability unrestricted AbstractRecently a three stratum theory of intelligence that combines the major
aspects of Spearman's theory of general intelligence (g) (1927) and Horn and
Cattel's theory of crystallized and fluid intelligence (Of-Ge) (1991) has been
proposed (Carroll, 1993). The purpose of this study was to test the three stratum
theory using confirmatory factor analysis with the LISREL computer program.
Developmental changes in the structure of intelligence were also investigated.
Results provided support for the three stratum theory, suggesting the possibility of
intermediate factors between the second and third stratum but no support for
developmental changes in the organization of cognitive abilities.
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