Memory for pictures: a life-span study of the role of visual detail.

This experiment assessed the effect of the amount of physical detail in pictures on picture recognition memory for 7-year-olds, 9-year-olds, young adults, and older adults over 68. Subjects were presented simple and complex line drawings, factorially combined in a "same-different" recognition test with simple or complex forms of each. For each age group, recognition accuracy was significantly higher for pictures presented in the simple than in the complex form. This effect was due to differences between simple and complex pictures in the correct rejection rate but not the hit rate; subjects were less accurate detecting deletions from changed complex pictures than additions to changed simple pictures. The older adults were no better than chance at correctly rejecting changed complex pictures. Although increasing the presentation duration from 5 sec to 15 sec increased overall accuracy, it did not increase subjects' ability to correctly reject changed complex pictures. Results are interpreted in terms of schematic encoding and storage of pictures. Accordingly, visual information that communicates the central schema of each picture is more likely to be encoded and retained in memory than information that does not communicate this schema.