Abstract
Cards consisting of 3×3, 4×4, 5×5 or 6×6 matrix containing randomly positioned letters were visually presented to the university student Ss for 50, 200, 400 and 1, 000msec duration and the effects of exposure time of the material on the recall of identity information and position information were investigated. The results indicated that the recall of position information (or the number of positions correctly recalled) was little affected by the exposure time, but the recall of identity information (or the number of letters correctly recalled) was significantly facilitated under the conditions of longer exposure time.
