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Wakeman, Holly N.; Wadsworth, Sally J.; Olson, Richard K.; DeFries, John C.; Pennington, Bruce F.; Willcutt, Erik G. – Journal of Learning Disabilities, 2023
This study investigated the relationship between mathematics difficulties and psychopathology in a large community sample (N = 881) of youth (8-18 years of age) in the United States. The primary aims of the study were to (a) test the associations between mathematics difficulties and specific components of internalizing, externalizing, attention,…
Descriptors: Children, Adolescents, Correlation, Learning Problems
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Peterson, Robin L.; Boada, Richard; McGrath, Lauren M.; Willcutt, Erik G.; Olson, Richard K.; Pennington, Bruce F. – Journal of Learning Disabilities, 2017
The current study tested a multiple-cognitive predictor model of word reading, math ability, and attention in a community-based sample of twins ages 8 to 16 years (N = 636). The objective was to identify cognitive predictors unique to each skill domain as well as cognitive predictors shared among skills that could help explain their overlap and…
Descriptors: Twins, Children, Adolescents, Predictor Variables
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Soethe, James W. – Journal of Learning Disabilities, 1972
Descriptors: Correlation, Exceptional Child Research, Learning Disabilities, Mental Retardation
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Rennick, Phillip M.; And Others – Adolescence, 1978
Factor analyses of the WISC, ITPA, and PIAT, revealed that 85 percent of the total variance of these tests can be accounted for by an abbreviated battery of 12 of the 26 subtests. Results indicated a very tight relationship between academic achievement and academic aptitude, even in underachievers. (Author/SJL)
Descriptors: Academic Aptitude, Achievement Tests, Correlation, Elementary School Students