Rate of Visual Information Pick-Up in Learning Disabled and Normal Boys

Abstract

A span-of-apprehension task and a backward masking technique were combined to allow measurement of the apprehension span of learning disabled and normal boys at various time intervals following stimulus presentation. A comparison of subjects' rate of information pick-up revealed a slower rate for learning disabled boys. Results indicate that most visual information is processed between 10 to 50 msec, after presentation of the stimulus. The implications for eye movement training programs as being detrimental for learning disabled students are discussed.