The study examined the hypotheses that the prediction of unethical behaviour varies as a function of perceived risk and that the risky shift in the group is caused by the competency of the partner and trust among them. Forty four American and SO Indian undergraduates completed Behaviour Prediction Scale under individual and dyadic group conditions. The results indicated that magnitude of punishment was the most crucial factor particularly in the Indian sample. Probability of gain was most important for Americans. By and large competency was related to risky shift in the American and positive affect in the Indian sample.