Joshua Lewis

Joshua Lewis

Joined Stern 2020

Leonard N. Stern School of Business
Tisch Hall
40 West Fourth Street, 914
New York, NY 10012

Personal website

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Joshua Lewis joined New York University Stern School of Business as an Assistant Professor of Marketing in July 2020.

Professor Lewis researches how to motivate and facilitate effective altruism. How can marketers help encourage individuals to apply their talents to achieving the greatest positive impact? How can they overcome the psychological factors that might impede these efforts? More generally, his research addresses how and why people make inconsistent and biased decisions. His work has been published in leading journals such as Psychological Science and Journal of Experiment Psychology: General.

In 2019, Professor Lewis received the Society for Judgment and Decision Making’s Hillel Einhorn Award for the best paper by a new investigator. He applies his research in the non-profit sector as a trustee for the Tabora League for Children and an advisory board member for The Life You Can Save.

He received his BS in Economics from the University of Warwick. He holds a PhD in Decision Processes from the University of Pennsylvania.

Research Interests

  • Altruism
  • How and why people make inconsistent and biased decisions

Courses Taught

  • Intro to Marketing

Academic Background

Ph.D., Operations, Information and Decisions
University of Pennsylvania

B.S., Economics
University of Warwick

Areas of Expertise


  • Charitable Giving


  • Decision Making & Policy


  • Consumer Psychology/Behavior