False memories are sometimes accompanied by a vivid experiential detail that makes them difficult to distinguish from actual memories. Although this phenomenon of "false recollection" has been reported in previous studies, the investigation of how this mechanism occurs remains inadequate. We attempted to clarify the characteristics of the mechanism of false recollection. Specifically, we investigated the relationship between false recollection occurrence rates caused by list studies and the strength of the correct recollection of studied items. Then, we compared the relationship between recollections of the image and word lists. The results demonstrated that the relation between false and correct recollections was different in image and word-based conditions. The word recollections were positively correlated with both types of recollection. On the other hand, when studying in images, false recollections were less likely to occur, and there was a high accuracy of correct recollection. These results suggested that the mechanism driving false recollection is peculiar to each kind of stimuli, and that image-based recollection is more likely to include the rejection of false recollections.

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