Cohen, R. L. (1967). Interaction between a visually perceived simple figure and an appropriate verbal label in recall. Perceptual and Motor Skills, 24, 287-292.
Using a circle with a 90°gap as stimulus figure and the verbal labels a clock set at 5 min. to 7 and a clock set at 10 min. to 8, several experimental conditions were run to test the interaction between the figure and the label in recall, agter the stimulus had been labelled just prior to its presentationl From the obtained results the conclusion was drayn that the main interaction occurs during the recall phase, there existing two separate memory traces, a visual and a verbal, up to the time of recall.