Instruments with Heterogeneous Effects: Bias, Monotonicity, and Localness
In Instrumental Variables (IV) estimation, the effect of an instrument on an endogenous variable may vary across the sample. In this case, IV produces a local average treatment effect (LATE), and if monotonicity does not hold, then no effect of interest is identified. In this paper, I calculate the...
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| Format: | Article |
| Language: | English |
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De Gruyter
2020-12-01
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| Series: | Journal of Causal Inference |
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| Online Access: | https://doi.org/10.1515/jci-2020-0011 |