Abstract

As moral decision making in financial markets incorporates moral considerations into investment decisions, some rational decision theorists argue that moral considerations would introduce inefficiency to investment decisions. However, market demand for socially responsible investment is increasing, suggesting that investment decisions are influenced by both financial and moral considerations. Several models can be applied to explain moral behavior. We test the suitability of (a) multiple attribute utility theory (MAUT), (b) theory of planned behavior, and (c) issue-contingent model of ethical decision making in organizations. In an experimental setting, 141 participants traded company shares in a computerized asset market. Over 12 periods, companies varied in morality (i.e., treatment of employees) and in profitability (i.e., expected dividends per share). Participants’ bids and asks for shares were recorded. Results indicate that moral considerations influence investment decisions, controlling for profit. Differences between the three models are discussed.