Email Novel Suspects Logo
Hachette provides comprehensive global distribution services in the following territories:
United States flag Switch to United States region United Kingdom flag Switch to United Kingdom region Australia flag Switch to Australia region India flag Switch to India region

Hachette Book Group menu

  • Home
  • Publishers
  • Customers
  • Sustainability
  • Retailer Portal
  • Location
  • Our Culture
  • Our Careers
Go to Hachette Book Group home

Hachette Book Group menu

  • Home
  • Publishers
  • Customers
  • Sustainability
  • Retailer Portal
  • Location
  • Our Culture
  • Our Careers

By clicking “Accept,” you agree to the use of cookies and similar technologies on your device as set forth in our Cookie Policy and our Privacy Policy. Please note that certain cookies are essential for this website to function properly and do not require user consent to be deployed.

Spencer Greenberg, PhD

About the Author

Spencer Greenberg is an entrepreneur and mathematician with a specialization in psychology. He’s the founder and CEO of Spark Wave, a psychology research organization that designs and conducts novel experiments and studies in psychology, and builds psychology related products designed to help solve problems in the world (e.g. scalable care for mental health challenges, and technology for accelerating and improving social science research). Spencer is also the host of the Clearer Thinking podcast, which is in the top 1% of podcasts globally. Through it, Spencer has interviewed many self-help figures and prominent non-fiction authors such as Scott Barry Kaufman, Loch Kelly, Kristin Neff, AJ Jacobs, Oliver Burkeman and Nobel prize winner Daniel Kahneman. Previously, Spencer co-founded AskAMathematician.com, a mathematics question and answer site which had about 50,000 monthly page views. He also founded ClearerThinking.org, which offers over 75 self-improvement tools and training programs used by hundreds of thousands of people, which are designed to help you improve decision-making, increase positive behaviors, and reduce cognitive biases.

Spencer has a PhD in applied math from NYU, with a specialty in machine learning. Spencer’s work has been featured by numerous major media outlets, such as Forbes, The New York Times, the Wall Street Journal, the Independent, Lifehacker, Gizmodo, Fast Company, and the Financial Times. Spencer also has extensive public speaking experience having done multiple talks including two TEDx talks here and here.

Get recommended reads, deals, and more from Hachette

By clicking ‘Sign Up,’ I acknowledge that I have read and agree to Hachette Book Group’s Privacy Policy and Terms of Use

By the Author

The 12 Levers
The 12 Levers

The 12 Levers

by Spencer Greenberg, PhD, by Jeremy Stevenson, PhD

Buy the book
▲
HBG Distribution logo
  • FAQ
  • Vendors
  • Cookie Policy
  • Report Piracy
  • Fraud Alert
  • CPSIA
  • GPSR
© 2025 Hachette Book Group | Terms of Use | Privacy Policy | Contact Us | Do Not Sell My Personal Information