This paper examines the case for randomized controlled trials in economics. I revisit my previous paper "Randomization and Social Policy Evaluation" and update its message. I present a brief summary of the history of randomization in economics. I identify two waves of enthusiasm for the method...

Conventional labor supply studies assume constant eligibility monitoring of income-tested program participants, but this is not true for most programs. For example, states can allow children to enroll in Medicaid/CHIP for 12 months regardless of family income changes. A long recertification...

We investigate the short-term labor supply responses to a Conditional Cash Transfers program in Peru. Rather than comparing treated and non-treated households, we examine how benefit recipients change their labor supply after receiving the cash transfer. Our empirical strategy exploits exogenous...