6 papers · 1 filter
Testing the Solvability of Systems of Linear Inequalities
Leonard Goff, Eric Mbakop
This paper studies the problem of testing whether a system of linear equality and inequality constraints admits a solution when the coefficients of that system may have to be estim…
Identification of Causal Effects with a Bunching Design
Carolina Caetano, Gregorio Caetano, Leonard Goff +1
We show that causal effects can be identified when there is bunching in the distribution of a continuous treatment variable, without imposing any parametric assumptions. This yield…
When does IV identification not restrict outcomes?
Leonard Goff
Many identification results in instrumental variables (IV) models hold without requiring any restrictions on the distribution of potential outcomes, or how those outcomes are corre…
Identifying causal effects with subjective ordinal outcomes
Leonard Goff
Survey questions often ask respondents to select from ordered scales where the meanings of the categories are subjective, leaving each individual free to apply their own definition…
Testing Identifying Assumptions in Parametric Separable Models: A Conditional Moment Inequality Approach
Leonard Goff, Désiré Kédagni, Huan Wu
In this paper, we propose a simple method for testing identifying assumptions in parametric separable models, namely treatment exogeneity, instrument validity, and/or homoskedastic…
Treatment Effects in Bunching Designs: The Impact of Mandatory Overtime Pay on Hours
Leonard Goff
This paper studies the identifying power of bunching at kinks when the researcher does not assume a parametric choice model. I find that in a general choice model, identifying the…