This paper discusses the nonparametric identification of causal direct and indirect effects of a binary treatment based on instrumental variables. We identify the indirect effect, which operates through a mediator (i.e. intermediate variable) that is situated on the causal path between the...

This paper exploits a liquidity shock from a large-scale welfare programme in Brazil to investigate the importance of credit constraints and informal financial assistance in explaining entrepreneurship. Previous research focuses exclusively on how liquidity shocks change recipients' behaviour...

This paper discusses the nonparametric identi.cation of causal direct and indirect effects of a binary treatment based on instrumental variables. We identify the indirect effect, which operates through a mediator (i.e. intermediate variable) that is situated on the causal path between the...

This paper attempts to distinguish and estimate the direct and indirect effects of infrastructure on firm productivity. The latter arises from the infrastructure-agglomeration link and has been largely overlooked in the literature on infrastructure. An analytical framework is then developed to...