This figure shows the results of the experiment conducted by University of Toronto psychologists Fergus Craik and Endel Tulving (1975). When participants encoded word lists by making a case judgment on each word, they correctly recognized only 15 percent of the words later. In dramatic contrast, when they had to process the meaning of the word, correct performance was over 80 percent. This demonstrates that processing words for meaning leads to better encoding into long-term memory than does processing words for merely structural characteristics.