TY - JOUR AU - Gennaioli,Nicola AU - Shleifer,Andrei TI - What Comes to Mind JF - National Bureau of Economic Research Working Paper Series VL - No. 15084 PY - 2009 Y2 - June 2009 UR - http://www.nber.org/papers/w15084 L1 - http://www.nber.org/papers/w15084.pdf N1 - Author contact info: Nicola Gennaioli CREI Universitat Pompeu Fabra Ramon Trias Fargas 25-27 08005 Barcelona (Spain) E-Mail: ngennaioli@crei.cat Andrei Shleifer Department of Economics Harvard University Littauer Center M-9 Cambridge, MA 02138 Tel: 617/495-5046 Fax: 617/496-1708 E-Mail: ashleifer@harvard.edu AB - We present a model of judgment under uncertainty, in which an agent combines data received from the external world with information retrieved from memory to evaluate a hypothesis. We focus on what comes to mind immediately, as the agent makes quick, intuitive evaluations. Because the automatic retrieval of data from memory is both limited and selected, the agent's evaluations may be severely biased. This framework can account for some of the evidence on heuristics and biases presented by Kahneman and Tversky, including conjunction and disjunction fallacies. ER -