Difference-In-Difference Estimators Attempt to

Multiple Choice

Difference-in-difference estimators attempt to

A) attempt to replicate randomized clinical trials by comparing treatment and control groups before and after a treatment is imposed to estimate the impact of a given policy intervention.
B) take differences of both the dependent and independent variables.
C) only difference the dependent variables and regress the differences on the independent variables.
D) obtain estimates at points in the distribution of the dependent variable aside from the mean.