000			02252nam a2200241Ia 4500
008			240430s2006 xx 000 0 und d
040			_cManila Tytana Colleges
100			_aTorppa, Minna. _912277
245		0	_aPredicting delayed letter knowledge development and its relation to grade 1 reading achievement among children with and without familial risk for dyslexia / _cMinna Torppa, Anna-Maija Poikkeus, Marja-Leena Laakso, Kenneth Eklund, Heikki Lyytinen
260			_cNovember 2006
336			_atext
337			_avolume
338			_aunmediated
440			_n42 : 6, pages 1128-1142 _aDevelopmental Psychology _912278
520			_aThe authors examined the developmental trajectories of children's early letter knowledge in relation to measures spanning and encompassing their prior language-related and cognitive measures and environmental factors and their subsequent Grade 1 reading achievement. Letter knowledge was assessed longitudinally at ages 4.5, 5.0, 5.5, and 6.5 years; earlier language skills and environmental factors were assessed at ages 3.5 and 4.5 years; and reading achievement was assessed at the beginning and end of Grade 1. The analyses were conducted on a longitudinal data set involving children with and without familial risk for dyslexia. Emerging from the trajectory analysis of letter knowledge were 3 separate clusters: delayed (n = 63), linearly growing (n = 73), and precocious (n = 51). The members of the delayed cluster were predominantly children with familial risk for dyslexia, and the members of the precocious cluster were predominantly control group children. Phonological sensitivity, phonological memory, and rapid naming skills predicted delayed letter knowledge. Environmental predictors included level of maternal education and the amount of letter name teaching. Familial risk for dyslexia made a significant contribution to the predictive relations. Membership in the delayed cluster predicted poor reading performance at Grade 1.
521			_aPsychology.
650			_aBeginning reading. _912279
650			_aFamilial dyslexia risk. _912280
650			_aHome environment. _912281
650			_aLanguage skills. _912282
650			_aLetter knowledge development. _912283
942			_cA
999			_c86451 _d86451