A comparison of depth perception processes of brain injured and non-brain injured boys of average intelligence



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A review of the literature revealed a need to study the processes of depth perception of brain injured children. The need was indicated by the absence of such data and the theoretical issue that brain injured children experience more difficulty in the area of visual perception than do non-brain injured children. The study was an attempt to assess the abilities of visual depth perception of brain injured and non-brain injured boys. Whether or not this aspect of perceptual ability is related to school achievement in the area of reading, spelling, and arithmetic was also investigated. Sixty boys from age eight through ten years whose WISC Full Scale IQ's were within the range of 90 to 110 were selected for the study. Thirty boys had a medical diagnosis of brain injury and thirty boys had no history of brain injury. A battery of tests consisting of the WISC, Wide Range Achievement Test, and Eye, Hand, Foot Preference tests were administered individually to each child. The research instrument for the investigation of depth perception was an enclosed box with two movable lights on horizontal tracks six inches long against a black felt background. The subject viewed the lights and adjusted the controls so that the lights appeared to be at equal distance from him. [...]