ART MARKMAN, PHD, is one of the premier cognitive scientists in the field. He has been on the faculty at The University of Texas since 1998, where he is the Annabel Irion Worsham Centennial Professor of Psychology and Marketing and director of the Human Dimensions of Organizations program. Markman, whose books include Smart Thinking (Penguin, 2012) and Smart Change (Penguin, 2014), has published over 150 scholarly works on topics including analogical reasoning, categorization, decision-making, and motivation. Additionally, he is a member of the medical advisory board of the Dr. Oz Show and on the scientific advisory board of the Dr. Phil Show.