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TWO FACTOR ANALYTIC STUDIES OF DYSLEXIC SUB‐TYPES
Author(s) -
HICKS CAROLYN,
SPURGEON P.
Publication year - 1982
Publication title -
british journal of educational psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.557
H-Index - 95
eISSN - 2044-8279
pISSN - 0007-0998
DOI - 10.1111/j.2044-8279.1982.tb02516.x
Subject(s) - psychology , factor (programming language) , developmental psychology , context (archaeology) , literacy , paleontology , pedagogy , computer science , biology , programming language
S ummary . A factor analysis was carried out on psychometric data from each of two separate dyslexic populations, using an orthogonal solution. The first analysis, performed on 640 children referred for clinical assessment, yielded four factors. The first two represented literacy and intelligence factors respectively. Factor 3 indicated an auditory dysfunction and Factor 4 a visual/verbal dysfunction. The second analysis, performed on 180 children screened for literacy problems, yielded three factors—Factor 1 suggested an auditory problem similar to Factor 3 of the clinical sample, Factor 2 a visual/verbal problem similar to Factor 4 of the clinical sample, and Factor 3 a literacy factor. The results are discussed in the context ( a ) of previous sub‐type classification studies and ( b ) of Vellutino's (1979) verbal mediation hypothesis.