Causal Inference, Instrumental Variable, Ab Testing, Encouragement Design, Average Treatment Effect.
“Estimating Causal Effects of Treatments in Randomized and Nonrandomized Studies”, Journal of Educational Psychology, 66 (5): 688–701. Siddique, Z. (2013), “Partially Identified Treatment Effects Under Imperfect Compliance: The Case of Domestic Violence”, Journal of the American Statistical