Kasser received his Ph.D. in Psychology from the University of Rochester in 1994, and after one additional year of teaching at Montana State University, he accepted a position at Knox College in Galesburg, Illinois, where he was a professor of psychology. He retired from Knox in 2019 and was named Emeritus Professor.
He has authored over 120 scientific articles and book chapters on materialism, values, goals, well-being, and environmental sustainability, among other topics. His first book, The High Price of Materialism, was published in 2002 (ISBN 978-0262611978); his second book (co-edited with Allen D. Kanner), Psychology and Consumer Culture, was released in 2004. In 2009 he co-authored a book (with Tom Crompton) Meeting Environmental Challenges: The Role of Human Identity. In 2013 he wrote Lucy in the Mind of Lennon, a psychological biography that explores the meaning of John Lennon's song, Lucy in the Sky with Diamonds. Most recently, in 2018, he collaborated with the cartoonist Larry Gonick on HyperCapitalism: The modern economy, its values, and how to change them.
Since the early 2000s, Kasser has consulted with activist and civil-society organizations who work against the commercialization of children and who work towards a more inwardly rich lifestyle than what is offered by consumerism. He lives with his wife, two sons, and assorted animals, including a donkey named Earl, in the western Illinois countryside.
Kasser initiated a line of research showing that people who pursue intrinsic goals for personal growth, affiliation, and community feeling report higher well-being than those focused on extrinsic goals for money, image, and status.
- Kasser, T. in Human Autonomy in Cross-Cultural Context (Chirkov, VI; Ryan, RM & Sheldon, KM, eds), Capitalism and autonomy, 191-206 (Springer, Netherlands, 2011). 
- Kasser, T, Crompton, T, and Linn, S. Children, commercialism and environmental sustainability. Solutions 1(2), 14–17 (2010).
- Kasser, T, Cohn, S, Kanner, AD, & Ryan, RM. Some costs of American corporate capitalism: a psychological exploration of value and goal conflicts. Psychological Inquiry 18, 1–22 (2007).
- Kasser, T, Ryan, RM, Couchman, CE & Sheldon, KM in Psychology and Consumer Culture: The Struggle for a Good Life in a Materialistic World (Kasser, T & Kanner, AD, eds), Materialistic values: Their causes and consequences, 11–28 (American Psychological Association, Washington, DC, 2004).
- Tim Kasser's personal homepage
- Knox College homepage about Tim Kasser
- Capitalism, Commercialism, and Children's well-being: Empirical Analyses Across Wealthy Nations video of a talk by Tim Kasser at the 2008 summit of the Campaign for a Commercial-Free Childhood
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