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Direct linkFlanagan, Tara; Enns, James T.; Murphy, Melissa M.; Russo, Natalie; Abbeduto, Leonard; Randolph, Beth; Burack, Jacob A. – Brain and Cognition, 2007
The voluntary and reflexive orienting abilities of persons with Down syndrome and fragile X syndrome, at average MA levels of approximately 4 and 7 years, were compared with an RT task. Reflexive orienting abilities appeared to develop in accordance with MA for the participants with Down syndrome but not for those with fragile X syndrome. However,…
Descriptors: Down Syndrome, Mental Retardation, Visual Perception, Comparative Analysis
