Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
We provide an overview and synthesis of recent work on models of monopolistic competition with heterogeneous firms in international trade, paying particular attention to competition effects, pass-through, selection effects, and linking distributions of firm characteristics and outcomes. A recurring theme is that CES preferences are extremely convenient for deriving analytic results, but also extremely restrictive in their theoretical and empirical implications. We introduce the class of “constant-response demand functions” to describe some related families of demand functions that provide a unifying principle for much recent work that explores alternatives to CES demands.