I present a simple model that formalizes Kahneman's (1973) ideas and experimental work on attention limitations. In addition, I extend his framework to account for the interaction between attention and memory deficits. In particular, I propose that individuals optimally allocate their divisible,...

Pooled forecasts frequently outperform individual forecasts of economic time series. This paper shows that the introduction of model uncertainty into the formation of expectations can account for the regularity. We conjecture that agents learn in a Bayesian way, using an optimally designed...

The private exchange of charitable gifts (e.g. charity gift-cards) has recently become an important source of donations to charities. In this paper we study this new phenomenon using the classical model of private provision of public goods, modified to account for exchange of private gifts....

I explore how investors allocate mental effort to learn about the mean return of a number of assets and I analyze how this allocation changes the portfolio selection problem. I show that the endogeneity of estimation risk alters the comparative statics of portfolio choice and provides an...

I present a simple model that formalizes Kahneman's (1973) ideas and experimental work on attention limitations. In addition, I extend his framework to account for the interaction between attention and memory deficits. In particular, I propose that individuals optimally allocate their divisible,...

Pooled forecasts frequently outperform individual forecasts of economic time series. This paper shows that the introduction of model uncertainty into the formation of expectations can account for the regularity. We conjecture that agents learn in a Bayesian way, using an optimally designed...

I explore how investors allocate mental effort to learn about the mean return of a number of assets and I analyze how this allocation changes the portfolio selection problem. I show that the endogeneity of estimation risk alters the comparative statics of portfolio choice and provides an...