Achievement

Trainee N. Lewis and his collaborators have developed a dynamic model of recognition memory. The model was based on studies of priming and fluency, in which an "invisible" prime presented just prior to its subsequent visible test increased the probability of responding that the test word had been on a studied list, regardless of whether the word had been studied. The model was able to account for problems common to past models such as criterion setting and reaction time predictions. Lewis then carried out subsequent studies testing the model by varying the onset at test of features varying in their diagnosticity. The project represents a major innovation and breakthrough in understanding memory access and retrieval.