Heckman, James J.; Pinto, Rodrigo; Shaikh, Azeem M. - 2023
assignment of treatment status is imperfectly randomized. By imperfect randomization we mean that treatment status is reassigned … after an initial randomization on the basis of characteristics that may be observed or unobserved by the analyst. We develop … randomization is imperfect to show that it is still possible to make nontrivial inferences about the effects of the program in such …