Rate variables and automatized naming in developmental dyslexia

The rate variable in rapid automatized naming (RAN) was investigated in 50 adolescent and 40 adult students with developmental dyslexia, in matched normal controls, and in learning-disabled students without reading difficulties. Visual stimuli depicting familiar colors and common objects were presen...

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Bibliographic Details
Published in:Brain and language 1990-11, Vol.39 (4), p.556-575
Main Authors: Wolff, Peter H., Michel, George F., Ovrut, Marsha
Format: Article
Language:English
Subjects:
Adolescent
Adult
Adult and adolescent clinical studies
Anomia - diagnosis
Anomia - psychology
Attention
Biological and medical sciences
Color Perception
Dyslexia - diagnosis
Dyslexia - psychology
Female
Humans
Language and communication disorders
Male
Medical sciences
Mental Recall
Pattern Recognition, Visual
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Reaction Time
Serial Learning
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Description
Summary:The rate variable in rapid automatized naming (RAN) was investigated in 50 adolescent and 40 adult students with developmental dyslexia, in matched normal controls, and in learning-disabled students without reading difficulties. Visual stimuli depicting familiar colors and common objects were presented in isolation at three film speeds and three exposure times. Film speed and exposure time contributed as independent variables to error rate; and dyslexic subjects of both age groups made significantly more naming errors than controls. Dyslexic subjects also responded with longer naming latencies than controls when the same RAN stimuli were presented in a continuous sequential mode as a matrix of rows and columns. Naming latencies in the sequential presentation were highly correlated with naming errors in the film version. The implications of reduced naming rates for nongraphological stimuli in developmental dyslexia are discussed.
ISSN:0093-934X
1090-2155
DOI:10.1016/0093-934X(90)90162-A