Lexical decision performances in P-type dyslexic, L-type dyslexic, and normal reading boys.
Lexical decision performances in P-type dyslexic, L-type dyslexic, and normal reading boys were investigated using three-letter and four-letter words (familiar words) and nonwords presented in the central visual field. For words, P-type dyslexics displayed significantly longer latencies for four-letter than for three-letter word decisions, whereas L-type dyslexics and normal readers did not. For nonwords, all subject groups showed significantly larger mean latencies for four-letter than for three-letter nonword decisions. In general, the error data corresponded to the latency data. L-type dyslexics, however, made more errors during four-letter words than during three-letter words, although they had similar latencies in both conditions. The results are discussed with reference to the hypothesis that P-type dyslexics would use a sequential processing mode for reading familiar words, whereas L-type dyslexics would employ a parallel processing mode for reading familiar words.
Van Strien
J W
JW
Faculty of Psychology, Free University, Amsterdam, The Netherlands.
Bouma
A
A
Bakker
D J
DJ
D000293:Adolescent; D002648:Child; D003657:Decision Making / Q000502:physiology*; D004410:Dyslexia / Q000523:psychology*; D007839:Functional Laterality; D006801:Humans; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology; D011932:Reading