The authors assume that a decisionmaker has expected utility preferences over a large space which includes some variables not observable by the theorist. These will induce preferences over observable variables, which typically will not have the expected utility form. This paper focuses on...

Analysis of the equity premium puzzle has focused on private--sector capital markets. However, the existence of an anomalous equity premium raises important issues in the evaluation of public--sector investment projects. These issues are explored below. We begin by formalizing the argument that...