The sensitivity of college students' judgments of relations between ev
ents in social and nonsocial situations was investigated. In Experimen
t I, both social and nonsocial contingency judgments increased as a fu
nction of increasing objective contingency between on-off vocal activi
ties (social) and between lights and tones (nonsocial). In Experiment
2, this effect was replicated for the social task when participants we
re not first told that they would be asked to judge contingencies. Exp
eriments 3 and 4 replicated the results of Experiment I when procedura
l modifications were made. In Experiments I and 4, conversations with
higher contingencies were evaluated more positively than those with lo
wer contingencies. The contingency of the conversation frill predicted
contingency judgments when the judged quality of the conversations wa
s statistically controlled. These findings suggest a generalizability
from past research on nonsocial contingency judgment tasks to the judg
ment of contingency occurring in dyadic interaction.