Joshua D. Angrist is an American economist known for his work in labor economics and econometrics. He is a professor at the Massachusetts Institute of Technology (MIT) and has made significant contributions to the understanding of causal relationships in economics. His research often focuses on the impact of education and labor market policies. In 2021, Angrist was awarded the Nobel Prize in Economic Sciences alongside David Card and Guido Imbens for their innovative approaches to analyzing causal effects. His work has influenced both academic research and practical policy-making, helping to shape how economists study the effects of various interventions.