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Direct linkMcNulty, Richard J.; Floyd, Randy G. – Psychology in the Schools, 2021
This study examined the factor structure of the Detroit Tests of Learning Abilities, Fifth Edition (DTLA-5) using principal axis factoring, multiple factor extraction criteria, and the Schmid-Leiman orthogonalization procedures not utilized by test publishers. Results suggest that the publisher's six-factor structure model was over factored.…
Descriptors: Aptitude Tests, Cognitive Ability, Factor Structure, Factor Analysis
McNicholas, Patrick J.; Floyd, Randy G. – Canadian Journal of School Psychology, 2017
The Reynolds Intellectual Assessment Scales, Second Edition (RIAS-2; Reynolds & Kamphaus, 2015) is an intelligence test for those aged 3 to 94 years. It contains eight subtests designed to assess general intelligence, verbal and nonverbal intelligence, memory, and processing speed. The two subtests targeting processing speed are new to the…
Descriptors: Intelligence Tests, Verbal Ability, Nonverbal Ability, Memory
Kranzler, John H.; Floyd, Randy G.; Benson, Nicholas; Zaboski, Brian; Thibodaux, Lia – International Journal of School & Educational Psychology, 2016
The Cross-Battery Assessment (XBA) approach to identifying a specific learning disorder (SLD) is based on the postulate that deficits in cognitive abilities in the presence of otherwise average general intelligence are causally related to academic achievement weaknesses. To examine this postulate, we conducted a classification agreement analysis…
Descriptors: Learning Disabilities, Children, Youth, Cognitive Ability
Maynard, Jennifer L.; Floyd, Randy G.; Acklie, Teresa J.; Houston, Lawrence, III – School Psychology Quarterly, 2011
The purpose of this study was to investigate the "g" loadings and specific effects of the core and diagnostic composite scores from the Differential Abilities Scales, Second Edition (DAS-II; Elliott, 2007a). Scores from a subset of the DAS-II standardization sample for ages 3:6 to 17:11 were submitted to principal factor analysis. Four…
Descriptors: Age, Construct Validity, Short Term Memory, Factor Analysis
Floyd, Randy G.; McGrew, Kevin S.; Barry, Amberly; Rafael, Fawziya; Rogers, Joshua – School Psychology Review, 2009
Many school psychologists focus their interpretation on composite scores from intelligence test batteries designed to measure the broad abilities from the Cattell-Horn-Carroll theory. The purpose of this study was to investigate the general factor loadings and specificity of the broad ability composite scores from one such intelligence test…
Descriptors: Intelligence, Psychologists, School Psychologists, Intelligence Tests
Proctor, Briley E.; Floyd, Randy G.; Shaver, Renee B. – Psychology in the Schools, 2005
This study extends previous research examining the relations between Cattell-Horn-Carroll cognitive abilities and math achievement. The cognitive profiles of children with normative weaknesses in Math Calculation Skills or Math Reasoning were compared to those of their average-achieving peers. The cognitive profile of the low Math Calculation…
Descriptors: Profiles, Computation, Cognitive Ability, Learning Disabilities
Taub, Gordon E.; Keith, Timothy Z.; Floyd, Randy G.; Mcgrew, Kevin S. – School Psychology Quarterly, 2008
This study investigated the direct and indirect effects of general intelligence and 7 broad cognitive abilities on mathematics achievement. Structural equation modeling was used to investigate the simultaneous effects of both general and broad cognitive abilities on students' mathematics achievement. A hierarchical model of intelligence derived…
Descriptors: Cognitive Ability, Intelligence, Mathematics Achievement, Age Differences
Floyd, Randy G.; McGrew, Kevin S.; Evans, Jeffrey J. – Psychology in the Schools, 2008
This study examined the relative contributions of measures of Cattell-Horn-Carroll (CHC) cognitive abilities in explaining writing achievement. Drawing from samples that covered the age range of 7 to 18 years, simultaneous multiple regression was used to regress scores from the Woodcock-Johnson III (WJ III; Woodcock, McGrew, & Mather, 2001) that…
Descriptors: Writing Achievement, Phonemes, Writing Skills, Cognitive Ability
Floyd, Randy G.; Evans, Jeffrey J.; McGrew, Kevin S. – Psychology in the Schools, 2003
Cognitive clusters from the Woodcock-Johnson III (WJ III) Tests of Cognitive Abilities that measure select Cattell-Horn-Carroll broad and narrow cognitive abilities were shown to be significantly related to mathematics achievement in a large, nationally representative sample of children and adolescents. Multiple regression analyses were used to…
Descriptors: Computation, Cognitive Ability, Short Term Memory, Mathematics Achievement
Floyd, Randy G.; Bergeron, Renee; McCormack, Allison C.; Anderson, Janice L.; Hargrove-Owens, Gabrielle L. – School Psychology Review, 2005
Many school psychologists use the Cattell-Horn-Carroll (CHC) theory of cognitive abilities to guide their interpretation of scores from intelligence test batteries. Some may frequently assume that composite scores purported to measure the same CHC broad abilities should be relatively similar for individuals no matter what subtests or batteries…
Descriptors: Intelligence, Psychologists, School Psychologists, Reliability
