Legal decisions such as the decision to bail upon adjourning a case have major consequences for both defendants and society. In the English system, magistrates, most of whom are lay people, are afforded considerable discretion and must work under constraints such as time pressure. Judgment analysis of the bail decision making policies of 81 magistrates from 44 courts throughout England and Wales revealed intra-and intermagistrate inconsistency in bail decisions, discrepancies between stated and elicited cue use, and high levels of post-decisional con®dence. Furthermore, magistrates' policies were better described and predicted by a fast and frugal model characterized by noncompensatory cue use, than by either of two compensatory integration models. The fast and frugal model portrays a picture of bail decision making that con¯icts with the ideal practice as de®ned by the due process model of justice. We discuss the implications of these ®ndings for judgment and decision making research and criminal justice policy. key words judgment analysis; fast and frugal; legal decision making; bail Decisions made in the criminal justice system are regularly criticized by organizations supporting victims, groups representing defendants and professional agencies such as the prosecution service. Criticism is directed both at existing legal rules and procedures and the individuals who are formally trained to apply them. The motivation for such scrutiny lies in the belief that crime and order are socially constructed and so can be reconstructed, and the realization that legal decisions have consequences for both the public purse and the lives of the public.Past psychological research on legal decision making includes studies investigating particular decisions made by judges (e.g. Ebbesen and Konecni, 1975;Sensibaugh and Allgeier, 1996) and studies of jury decision making (e.g. Klevorick et al., 1984;Pennington and Hastie, 1981). Although both types of research provide scope for challenging and changing existing legal rules and procedures, only the former can also critique the performance of individuals who are formally trained and entrusted to apply them on a regular basis.Many published studies of legal decisions made by judges have tended to focus on decisions made in the American criminal justice system. For example, Ebbesen and Konecni (1975) examined the information