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Decomposition Methods

Georgetown Seminar
by william reed on 7 November 2012

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Transcript of Decomposition Methods

William Reed
University of Maryland
wlr@umd.edu Decomposing Conflict Thinking about counterfactuals
Oaxaca (1973) & Blinder (1973) Wage Gap
How could the rate of conflict differ between two groups (neighbors & non-neighbors)?
Different effects of observables?
Different effects of unobservables?
Differences the distribution of observables?
Differences the distribution of unobservables? Decomposition Methods Estimate a regression using the data from the first group.
Estimate a regression using the data from the second group.
Use the regression output to calculate the quantities of interest. Application Differences in observables
Differences in conflict rates
Differences in coefficients Visualization Decompose Differences Application Microfoundations?
Standard errors
Choice of comparison group
Pooling & Randomization
Number of Observations
Calculating individual contributions of observables Estimation & Identification "Decomposing the Relationship Between Contiguity and Militarized Conflict" American Journal of Political Science Vol. 54, No. 1 (Jan., 2010) (with Daina Chiba) "Major Powers and Militarized Conflict" Conditionally accepted at the Journal of Conflict Resolution (with Daina Chiba and Carla Martinez Machain)
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