In bargaining, buyers aim to spend as little money as they can on the items they seek to purchase. Compared to promotion-oriented people, prevention-oriented people seek to avoid losses rather than to secure gains. Employing different negotiation scenarios, three lab experiments tested the...

How can changes in degrees of group affiliation or identity change one’s decision to cooperate or defect in a dilemma? According to the logic of appropriateness, decision changes result from changes in answer to the question, “what does a person like me do in a situation like this?” In two...