He also is widely recognized for popularizing advances in non-experimental impact evaluation methods (causal inference) and making it more accessible to practitioners.
One of Cunningham's most notable projects is Causal Inference: The Mixtape,[5] which serves as both a textbook and a platform for disseminating complex econometric concepts in a more digestible format.
Cunningham's textbook is intended to bridge the gap between high-level theory and research and practical application.
His stated hope is that in the limit, a collective oral history of the last 50 years of the economics profession will emerge.
[6] Cunningham's research examines prostitution markets,[7] foster care, abortion, mental health, and drug policy.