"The impact of cash transfer programs on the accumulation of human capital is a topic of great policy importance. An attendant question is whether program effects are larger when transfers are "conditioned" on certain behaviors, such as a requirement that households enroll their children in...

"Mundell and Markusen each wrote classic papers on the relationship between trade and factor movement. Mundell showed that substitution holds in the Heckscher-Ohlin model. Markusen challenged the substitution result and showed in five different models that removing barriers to factor movement...

How firms react to a given shock may depend on the degree to which rivals are present and on whether potentially viable entrants to that market exist. A preferred supplier market presence and threat of entry lessen a nonmember country's price reaction to most-favored-nation trade liberalization...