Similarities, differences and interactions among color and shape variables were studied using a tachistoscope and partial report procedure. Results indicated a decrease in information with an increase in delay time for all conditions. All subjects processed color information more effectively than shape information. For the combined color-shape condition, one subject used both color and shape clues effectively and one subject showed no significant difference between his color decay function and his color-shape decay function. The possible implication of this visual information processing approach to human performance in the classroom is discussed.