We show that constraints can improve financial decision-making by disciplining behavioral biases. In financial markets, restrictions on leverage limit traders' ability to borrow to open new positions. We demonstrate that regulation which restricts the provision of leverage to retail traders...

We study the effect of subjective mortality beliefs on life-cycle behavior. With new survey evidence, we document that survival is underestimated by the young and overestimated by the old. We calibrate a canonical life-cycle model to elicited beliefs. Relative to calibrations using actuarial...

Social interaction contributes to some traders' disposition effect. New data from an investment-specific social network linked to individual-level trading records builds evidence of this connection. To credibly estimate causal peer effects, I exploit the staggered entry of retail brokerages into...