Sj. Heine et Dr. Lehman, CULTURAL VARIATION IN UNREALISTIC OPTIMISM - DOES THE WEST FEEL MORE INVULNERABLE THAN THE EAST, Journal of personality and social psychology, 68(4), 1995, pp. 595-607
Levels of unrealistic optimism were compared for Canadians (a culture
typical of an independent construal of self) and Japanese (a culture t
ypical of an interdependent construal of self). Across 2 studies, Cana
dians showed significantly more unrealistic optimism than Japanese, an
d Canadians' optimism bias was more strongly related to perceived thre
at. Study 2 revealed that Japanese were even less unrealistically opti
mistic for events that were particularly threatening to interdependent
selves. The authors suggest that self-enhancing biases( such as unrea
listic optimism) are, for the most part, absent from the motivational
repertoire of the Japanese because the consequent attention to the ind
ividual that self-enhancement engenders is not valued in interdependen
t cultures.