抄録
The purpose of this study was to examine how an individual changes his opinion with exposure or no exposure to others' average responses and with expectation or no expectation of having his opinion made public. Subjects were 88 undergraduate students. The materials used were CDI (Choice Dilemma Items). In risky items a shift toward risk occurred under no expectation of opinion publication and exposure to others' average responses. In cautious items a shift toward caution did not take place. Group polarization was found in risky items but not in cautious items. The results were discussed in terms of the social comparison processes.
