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A study is conducted to examine the consequences of mood in molding behavior in financial markets and in determining performance of participants. The hypothesis with respect to the impact of good, neutral and bad moods on the behavior of traders is derived based on a review of the psychological theories and empirical findings, which relate mood and decision making and information processing is presented.

An investigation is conducted to identify the ways in which, concern for fairness influence decision-making, by using a paradigm to illustrate the circumstances under which a decision maker sacrifices his/her own potential, or reward to be either fair or unfair to another person. The investigation revealed that the fairness motive and moral concerns could influence decisions that have economic impact.

A research supporting the robust generalization that groups perform better than the average individual on a range of problem-solving tasks is presented. Results indicate that the superiority of groups over the average individual increases, as the task becomes increasingly intellective, from estimation, to vocabulary and world knowledge, to problem solving within a logical or quantitative conceptual system.