Tim Kasser, PhD, graduated from Vanderbilt University, summa cum laude with Honors in Psychology, in 1988. Six years later, he received his PhD in Psychology from the University of Rochester. In 1995 he accepted a position at Knox College in Galesburg, Illinois, where he is currently an associate professor of psychology. He has authored over thirty scientific articles and book chapters on materialism, values, and goals, among other topics. His first book, The High Price of Materialism, was published in 2002.

Allen D. Kanner, PhD, received his undergraduate (1974) and graduate (1981) psychology degrees from the University of California, Berkeley and was a postdoctoral fellow in clinical child psychology at McLean Hospital, Harvard Medical School (1981-1983). Early in his career he developed both the adult and children's Hassles and Uplifts Scales and was on staff at Children's Hospital at Stanford University. In the last decade, he has helped establish the field of ecopsychology, within which he has focused on consumerism, ecofeminism, society's narcissistic relationship with nature, and extinction. He teaches at both the Wright Institute and Saybrook Graduate School and Research Center, and is in private practice in Berkeley, CA. He is coeditor of Ecopsychology: Restoring the Earth, Healing the Mind.