This study examines how group attitudes and outcomes evolve over time
with repeated use of a group support system. Social Information Proces
sing (SIP) theory, which suggests that relational intimacy may take lo
nger to develop in computer-supported groups, was used as the basis fo
r testing a temporally bounded model of group behavior. The basic argu
ment underlying this model is that computer-supported groups, given ad
equate time, will exchange enough social information to develop strong
relational links. Thus, while computer support was expected to limit
group interactions initially, the model predicted that, over a period
of time, such constraints would dissipate. The results show evidence o
f such shifts among computer-supported groups. Attitudes of GSS users
changed over time from highly negative to somewhat positive; outcomes
improved more slowly. The turnaround in attitudes of users-toward each
other and the interaction process-support the SIP perspective that re
peated use of computer support despite some inherent initial restricti
ons-can help groups affiliate.