抄録
This report concerns with the recognition memory and the confidence rating. The hit ratio was correlated to the confidence ratings, while the correct rejection (CR) ratio was not correlated to the confidence ratings. Especially, in case of short presentation of target items, negative coefficient was observed between CR and its confidence rating. This is because there were no memory traces of new items, so subjects used supplementary information about those items that had no relations to experimental learning episodes, and the subjects used that information as clue in recognition judgement. Although the base of the confidence rating was relpaced by the plausibility of such information, the subjects could not monitor the source of confidence.
