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Familial dyslexia: neurocognitive and genetic correlation in a large Finnish family
Author(s) -
NopolaHemmi Jaana,
Myllyluoma Birgitta,
Voutilainen Arja,
Lein Seija,
Kere Juha,
Ahonen Timo
Publication year - 2002
Publication title -
developmental medicine and child neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.658
H-Index - 143
eISSN - 1469-8749
pISSN - 0012-1622
DOI - 10.1111/j.1469-8749.2002.tb00842.x
Subject(s) - dyslexia , neurocognitive , spelling , psychology , neuropsychology , reading (process) , cognition , developmental psychology , phonological awareness , cognitive psychology , psychiatry , literacy , linguistics , philosophy , pedagogy
Neuropsychological findings of individuals with dyslexia ( n =24) from a large, three‐generation Finnish family are presented. We have previously performed whole genome linkage scanning in this family and found that dyslexia in this kindred segregates with a single locus in the pericentromeric area of chromosome 3. Those included in the analyses were carefully evaluated for general cognitive ability, reading and spelling skills, and reading‐related neurocognitive skills. The neurocognitive type of dyslexia segregating in this family consisted of deficits in phonological awareness, verbal short‐term memory, and rapid naming. Severe dyslexia also seemed to be connected with a general language difficulty and was most common in the eldest generation.