The empirical literature provides a wide range of estimates for trade elasticities at the aggregate level. Furthermore, recent contributions in international macroeconomics suggest that low (implied) values of the trade elasticity of substitution may play an important role in understanding the...

reallocation are halved.

We consider a simple state verification technology in a dynamic private information economy. We find that the marginal benefit may be below the marginal cost of investment under the constrained efficient allocation. In particular, if the planner can verify a the type of a sufficiently large...