Some central questions in the natural and social sciences can’t be answered by controlled laboratory experiments, often considered to be the hallmark of the scientific method. This impossibility holds for any science concerned with the past. In addition, many manipulative experiments, while...

This working paper presents findings from an effort to evaluate the impacts of immigration policies on the welfare of migrants and their families in migrant-sending countries. It uses a disaggregated micro economy-wide modelling approach, designed to capture both the potentially positive and...