His research interests include econometric theory, applied econometrics, and causal inference, with a particular focus on the definition, identification, and estimation of causal effects. In recent work, he develops and applies methods for causal inference in settings where data on key variables are missing or error-laden. Prior to joining UVA, Karim was an Assistant Professor at Boston College and a Visiting Scholar at Harvard University. He holds a Bachelor’s degree from the American University of Beirut and a Ph.D. from the University of California, San Diego.