THE SNODGRASS PICTURE FRAGMENT COMPLETION TEST - ALTERNATE-FORM RELIABILITY

In two studies, the alternate-form reliability of the Snodgrass pictur e fragment completion test of implicit memory (Snodgrass, Smith, Feena n, & Corwin, 1987) was examined. In this test, identification threshol ds are established for fragmented pictures. The same fragmented pictur es are then shown again, intermixed with new fragmented pictures. Impl icit memory is indicated by a decrease in identification threshold fro m the first to second presentation. Alternate-form reliability was low to moderate, depending on the measure used, regardless of the length of the test. A third study showed that explicit memory instructions di d not increase the reliability. Recommendations for use of the test in correlational and experimental research are presented.