"Mindless" decision making as a failure of contextual reasoning.

People often make decisions without reference to vital information, even when such information is readily available. In the present research, the authors addressed the possibility that this tendency may derive from failure to have pertinent information immediately available in the decision context. Participants rated the utility of decisions in either the presence or absence of simple pertinent information. The information provided required no training and was relatively obvious (e.g., if money is spent on a given item, that money will not be available for other expenditures). Presentation of such information in the immediate context of decisions significantly improved participants' abilities to understand their negative consequences. These results indicate that the presentation of pertinent information in immediate decision contexts, even information that is already available through participants' long-term memory, can improve the understanding of decision situations and reduce "mindlessness" in decision processes.