title: Brain hemisphericity and developmental dyslexia.
abstract: The present study examined the link between brain hemisphericity and dyslexia in secondary school students, using the Preference Test (PT), a widely used self-report index of preferred hemisphere thinking styles. The hypothesis was that differences would be revealed between the dyslexic group and their peers in hemispheric preference. A total of 45 secondary school students who were diagnosed with dyslexia and attended regular public schools formed the learning disabled group. A comparison group was formed of pupils who attended the same classes (N=90), and these were matched for age and sex with dyslexics (1 dyslexic: 2 control). The results revealed that significantly more dyslexic pupils displayed a preference for a right hemisphere thinking style compared to their peers who adopted a left hemisphere thinking style. This finding is in line with the suggestion of the greater right hemisphere involvement in the expression of developmental dyslexia.
authors.affiliation: University of Thessaly, Department of Special Education, Argonafton & Filellinon, 38221 Volos, Greece. fvlachos@uth.gr
authors.forename: Filippos
authors.initials: F
authors.lastname: Vlachos
authors.forename: Eleni
authors.initials: E
authors.lastname: Andreou
authors.forename: Afroditi
authors.initials: A
authors.lastname: Delliou
mesh_terms: D000293:Adolescent; D002540:Cerebral Cortex / Q000502:physiology*; D004292:Dominance, Cerebral / Q000502:physiology*; D004410:Dyslexia / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007858:Learning / Q000502:physiology; D008297:Male; D057240:Patient Preference; D011594:Psychometrics; D011932:Reading; D013850:Thinking / Q000502:physiology