The highly innovative findings of social psychologist Dr. Ellen J. Langer and her team of researchers at Harvard introduced a unique concept of mindfulness, adapted to contemporary life in the West. Langer's theory has been applied to a wide number of fields, including health, business, aging, social justice, and learning. There is now a new psychological assessment based on her work (called the Langer Mindfulness Scale). In her introduction to this 25th anniversary edition, Dr. Langer (now known as "the Mother of Mindfulness") outlines some of these exciting applications and suggests those still to come.