Richard H. Thaler

American behavioral economist — University of Chicago Booth School — Nobel Prize in Economic Sciences 2017 — who built the behavioral economics research program on Kahneman and Tversky's foundations and co-created nudge theory.

Creates nudge theory — Thaler and Sunstein's Nudge argues that small changes in how choices are presented (default options, framing, social comparison) can reliably improve human decision-making without restricting freedom; the framework became the basis for behavioral public policy worldwide.