Portal de Periódicos da CAPES

Inference on Causal Effects in a Generalized Regression Kink Design

2015; Wiley; Volume: 83; Issue: 6 Linguagem: Inglês

10.3982/ecta11224

1468-0262

David Card, David S. Lee, Zhuan Pei, Andrea Weber,

Labor market dynamics and wage inequality

ORDER TO PROVE PROPOSITION 1, we first present and prove the following lemmas.Suppose ϕ(x t) and its partial derivative, ϕ 2 (x t), are continuous and that ϕ is integrable with respect to the probability measure α for each t.Then f (t) = ϕ(x t) dα(x) is continuously differentiable on [c d].