and Jason Zweig for useful conversations and to Lipper Analytical Services for data on Texas municipal bond funds. Familiarity Breeds Investment by

We explore a new panel data set on bilateral gross cross-border equity flows between 14 countries, 1989-96. We show that a “gravity ” model explains international transactions in financial assets at least as well as goods trade transactions. Gross transaction flows depend on market size in both source and destination country as well as trading costs, in which both information and the transaction technology play a role. Distance proxies some information costs, and other variables explicitly represent information transmission, an information asymmetry between domestic and foreign investors, and the efficiency of transactions. The remarkably good results have strong implications for theories of asset trade. We find that the geography of information is the main determinant of the pattern of international transactions, while there is weak support in our data for the diversification motive, once we control for the informational friction. We strengthen our conclusions by investigating- in another data set- the ability of our information variables to explain transactions in classes of assets with different informational content (corporate bonds, equities and government bonds). Finally, we broaden the scope of our results by presenting some evidence linking the results on equity transactions to equity holdings.

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Consumer knowledge is seldom complete or errorless. Therefore, the self-assessed validity of knowledge and consequent knowledge calibration (i.e., the correspondence between self-assessed and actual validity) is an important issue for the study of consumer decision making. In this article we describe methods and models used in calibration research. We then review a wide variety of empirical results indicating that high levels of calibration are achieved rarely, moderate levels that include some degree of systematic bias are the norm, and confidence and accuracy are sometimes completely uncorrelated. Finally, we examine the explanations of miscalibration and offer suggestions for future research. Consumers are overconfident—they think they know more than they actually do. Our simple goal is to evaluate this proposition. Ultimately, we conclude that overconfidence is indeed a robust phenomenon and can be adopted by researchers as a stylized fact about human cognition; however, there are critical qualifications and

We develop a positive behavioral portfolio theory and explore its implications for portfolio construction and security design. Portfolios within the behavioral framework resemble layered pyramids. Layers are associated with distinct goals and covariances between layers are overlooked. We explore a simple two-layer portfolio. The downside protection layer is designed to prevent financial disaster. The upside potential layer is designed for a shot at becoming rich. Behavioral portfolio theory has predictions that are distinct from those of meanvariance portfolio theory. In particular, behavioral portfolio theory is consistent with the reluctance to have short and margined positions, an inverse relation between the bond/stock ratio and portfolio riskiness, the existence of the home bias, the use of labels such as “growth ” and “income, ” the preference for securities with floors on returns, and the purchase of lottery tickets. 2 Behavioral Portfolio Theory We develop behavioral portfolio theory as a descriptive theory, an alternative to

This paper concerns the evaluation and combination of subjective probability estimates for categorical events. We argue that the appropriate criterion for evaluating individual and combined estimates depends on the type of uncertainty the decision maker seeks to represent, which in turn depends on his or her model of the event space. Decision makers require accurate estimates in the presence of aleatory uncertainty about exchangeable events, diagnostic estimates given epistemic uncertainty about unique events, and some combination of the two when the events are not necessarily unique, but the best equivalence class de®nition for exchangeable events is not apparent. Following a brief reveiw of the mathematical and empirical literature on combining judgments, we present an approach to the topic that derives from (1) a weak cognitive model of the individual that assumes subjective estimates are a function of underlying judgment perturbed by random error and (2) a classi®cation of judgment contexts in terms of the underlying information structure. In support of our developments, we present new analyses of two sets of subjective probability estimates, one of exchangeable and the other of unique events. As predicted, mean estimates were more accurate than the individual values in the ®rst case and more diagnostic in

People often choose intuitive rather than equally valid nonintuitive alternatives. The authors suggest that these intuitive biases arise because intuitions often spring to mind with subjective ease, and the subjective ease leads people to hold their intuitions with high confidence. An investigation of predictions against point spreads found that people predicted intuitive options (favorites) more often than equally valid (or even more valid) nonintuitive alternatives (underdogs). Critically, though, this effect was largely determined by people’s confidence in their intuitions (intuitive confidence). Across naturalistic, expert, and laboratory samples (Studies 1–3), against personally determined point spreads (Studies 4–11), and even when intuitive confidence was manipulated by altering irrelevant aspects of the decision context (e.g., font; Studies 12 and 13), the authors found that decreasing intuitive confidence reduced or eliminated intuitive biases. These findings indicate that intuitive biases are not inevitable but rather predictably determined by contextual variables that affect intuitive confidence.

A well-documented anomaly in racetrack betting is that the expected return per dollar bet on a horse increases with the probability of the horse winning. This so-called favorite-longshot bias is at odds with the presumptions of market efficiency. We show that the bias is consistent with betters having myopic beliefs. If betters neglect the fact that the popularity of a horse indicates that other people have favorable information about that horse, then they bet less on the favorite than they should. This myopia is related to, though stronger than, the judgmental bias that leads to the winner's curse in auctions.

In this paper we discuss the importance of ambiguity, uncertainty and limited information on individuals ' decision making in situations that have an impact on their privacy. We present experimental evidence from a survey study that demonstrates the impact of framing a marketing offer on participants' willingness to accept when the consequences of the offer are uncertain and highly ambiguous.