Paco Underhill

Underhill studies and tracks the habits of shoppers in order to learn the best way to lead them to make purchases. His retail consulting firm, Envirosell, has helped big-name companies such as McDonald's, Levi Strauss and Blockbuster to study their customers' browsing and buying habits. He's the author of the book Why We Buy, and the new book Call of the Mall.

Pack Underhill studies what is called retail anthropology, in which he tracks the habits of shoppers in order to learn the best way to convince them to make a purchase. His retail consulting firm, Envirosell, has helped big-name companies such as McDonald's, Levi Strauss, and Blockbuster to study their customers browsing and buying routines.