David Weiner is the author of four psychology books, that include Battling the Inner Dummy: The Craziness of Apparently Normal People, Power Freaks: Dealing with Them in the Workplace or Anyplace, and Brain Tricks: Coping with Your Defective Brain. He serves on the external board of advisors for the Health Emotions Research Institute of the University of Wisconsin, Madison. The institute seeks to use state-of-the-art scientific methods developed for the study of illness to study the relationship between positive emotions and health.
Weiner was also instrumental in founding the Scientific Society for the Study of Psychopathy, which held its first symposium and conference in 2005 featuring the top academics worldwide in the field. On the business side of his career, he is the founder and CEO of Marketing Support, Inc.