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VISUAL PROCESSING OF STRAIGHT LINES IN DYSLEXIC AND NORMAL CHILDREN
Author(s) -
O'NEILL G.,
STANLEY G.
Publication year - 1976
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.2044-8279.1976.tb02329.x
Subject(s) - psychology , dyslexia , homogeneous , audiology , developmental psychology , mathematics , linguistics , reading (process) , medicine , philosophy , combinatorics
S ummary . Separation thresholds for groups of 26 dyslexic and normal children attending the first year of secondary school were obtained with pairs of identically‐oriented and spatially‐overlapping straight lines presented at orientations varying from zero to 90 degrees. The dyslexics as a group had about 10 to 15 msec longer separation times than normals. In a second experiment single straight line contours were preceded by an homogeneous light mask. Dyslexics required longer stimulus exposures for detection than controls. It is suggested that the present results are compatible with the view of a developmental lag in the visual information processing of dyslexics.