Abstract: The experiment was designed to explore the idea. of the levels of processingfor human memory research proposed by Craik (1972). The major concern inour experiment was the effect of the levels of processing on free-recall andrecognition, including simultaneously three retrieval information. The resultsshowed that the deeper the encoding process, the better the presented materialretrieved. The result was discussed with the viewpoint that there is interactionbetween encoding and retrieval. The type of encoding was more importantthan input-output compatibility.

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