Silicon Valley’s so-called “millionaire maker” is a behavioral scientist who foresaw the power of putting persuasion at the heart of the tech world’s business model. But behind the curtain of the industry’s behemoth companies is a cadre of engineers and executives small enough to rein in. This is the final installment of our three-part series. If you haven't heard parts one and two, start there first.

In this episode, we hear from:

- Alexandra Rutherford, Professor in the Department of Psychology at York University in Toronto andauthor of Beyond the Box: B.F. Skinner's Technology of Behaviour from Laboratory to Life, 1950s-1970s

- Ian Leslie, author of “The Scientists Who Make Apps Addictive”

- B.J. Fogg, Director of the Stanford University "Behavior Design Lab”

- Tristan Harris, Co-Founder & Executive Director of the Center for Humane Technology

- Dorothy Glancy, Professor of Law at Santa Clara University

- Senator Mark Warner of Virginia

Hosted by Kai Wright. Reported by Amanda Aronczyk.

WNYC’s health coverage and The Stakes is supported in part by the Robert Wood Johnson Foundation, Jane and Gerald Katcher and the Katcher Family Foundation, and the Alfred P. Sloan Foundation. Thanks to Andy Lanset, WNYC Archives, Lizette Royer Barton at the Center for the History of Psychology and Diana Bachman at the Bentley Historical Library, University of Michigan.