This study examined three hypotheses concerning differences between co
llectivistic and individualistic cultures using samples from Costa Ric
a and the United States. The first hypothesis was that people in indiv
idualistic cultures would express emotions affirming independent self-
conceptions, whereas people in collectivistic cultures would express e
motions affirming interdependent self-conceptions. The first part of t
his hypothesis was confirmed, but the second part was not. The second
hypothesis was that people in collectivistic cultures would make a gre
ater distinction in the degree to which they expressed emotions toward
in-group and out-group members than would people in individualistic c
ultures. This hypothesis was not supported. The third hypothesis was t
hat people in collectivistic cultures would feel less comfortable expr
essing negative emotions than people in individualistic cultures. The
data provided strong support for this hypothesis. The results an discu
ssed in terms of differences between these two cultures and their sign
ificance for intercultural communication and individualism-collectivis
m.