title: Why be nice? Better not think about it.
abstract: Are people more likely to be cooperative if they must act quickly or if they have more time to mull it over? The results of a recent series of studies suggest that peoples' initial impulse is to cooperate, but that with more time and reflection they become more selfish.
authors.affiliation: Max Planck Institute for Evolutionary Anthropology, D-04103 Leipzig, Germany. tomas@eva.mpg.de
authors.forename: Michael
authors.initials: M
authors.lastname: Tomasello
mesh_terms: D000533:Altruism; D003299:Cooperative Behavior; D006801:Humans