2002 年 73 巻 3 号 p. 243-250
This study investigated whether people's levels of confidence (CL) judgments and feeling of knowing (FOK) judgements in answering questions about general knowledge were influenced by information about normative difficulty of the questions-that is, the percentage of people who could recall the correct answer to the question-. In easy-information condition, participants were told that questions were easier-that is, more people could answer the questions-than they really were. In difficult-information condition, participants were told that the same questions were more difficult-that is, less people could answer the questions-than they really were. Results showed that the participants gave higher CL judgments and higher FOK judgments for their answers in the easy-information condition than for their answers in the difficult-information condition. These results confirm the hypothesis that people's CL judgments and FOK judgments were influenced by the information about normative difficulty of questions.