Kathy Sierra is the author of Creating Passionate Users, and has been interested in the brain and artificial intelligence since her days as a game developer (Virgin, Amblin', MGM).
She is the co-creator of the bestselling brain-friendly Head First series (winner of the Jolt Software Development award in 2004). She is also the founder of one of the largest programmer community web sites, javaranch.com. Much of the theory and practice behind "passionate users" began when she developed and taught the first Interaction Design and New Media courses at UCLA Extension's Entertainment Studies Department, and at the IBM New Media Center at Universal Studios Citywalk.
A former master trainer for Sun Microsystems, she has spent the last few years helping others learn to apply brain-friendly techniques to inspire and maintain passionate users.