Identification in Multiple Treatment Models under Discrete Variation

Author:

Vishal Kamat, Samuel Norris, Matthew Pecenco

Keyword:

Economics, Econometrics, Econometrics (econ.EM)

journal:

date:

2023-07-11 16:00:00

Abstract

We develop a method to learn about treatment effects in multiple treatment models with discrete-valued instruments. We allow selection into treatment to be governed by a general class of threshold crossing models that permits multidimensional unobserved heterogeneity. Under a semi-parametric restriction on the distribution of unobserved heterogeneity, we show how a sequence of linear programs can be used to compute sharp bounds for a number of treatment effect parameters when the marginal treatment response functions underlying them remain nonparametric or are additionally parameterized.

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