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Cummins, Robert A. – Journal of Learning Disabilities, 1991
This study reexamines factor analyses from which A. J. Ayres claimed to have identified perceptual-motor factors found in the scores of children with learning disabilities but not normally learning children. The reappraisal finds no support for the claim, and as a result, no support for derived diagnostic procedures or remedial programs.…
Descriptors: Comparative Analysis, Educational Diagnosis, Factor Analysis, Handicap Identification

Watson, Charles S.; Kidd, Gary R.; Horner, Douglas G.; Connell, Phil J.; Lowther, Andrya; Eddins, David A.; Krueger, Glenn; Goss, David A.; Rainey, Bill B.; Gospel, Mary D.; Watson, Betty U. – Journal of Learning Disabilities, 2003
Standardized sensory, perceptual, linguistic, intellectual, and cognitive tests were administered to 470 entering first graders. Factor analysis found four factors, which were reading related skills, visual cognition, verbal cognition, and speech processing. Cluster analysis identified nine profiles. The strongest predictors of later reading and…
Descriptors: Academic Achievement, Beginning Reading, Cluster Analysis, Cognitive Processes