Jesse L. Martin (left) and Jerod Haynes (right) co-star in "The Irrational" on NBC. And "The Irrational" is based on the life of Dan Ariely and his nonfiction book, "Predictably Irrational: The Hidden ...

The Irrational, based on Dan Ariely’s book Predictably Irrational, follows world-renowned professor of behavioral science Alec Mercer (Martin), as he lends his unique expertise on an array of ...

Sergei Bachlakov/NBC Based on the 2008 non-fiction book Predictably Irrational: The Hidden Forces That Shape Our Decisions, The Irrational takes inspiration from the life of Dan Ariely.