The purpose of this study was to determine whether attitudes toward risk and altruism are affected by being in a group … group offered significantly lower amounts than those who made decisions alone, after controlling for individuals' risk and … altruistic preferences. The findings imply that people are more risk-averse and self-interested when they are in a group …

face of risk. The results indicate a significant number of violations of both principles. The violation rate when groups …

extent observed team decisions under risk are actually consistent with the principles of rational choice, specifically the … principles of Expected Utility Theory (EUT) and of Portfolio Selection Theory (PST). The experiment is performed with individuals … individuals, teams accumulate significantly more expected value at a significantly lower total risk (measured in SD). We introduce …