Jennifer GreggJennifer Gregg, PhD, is a psychologist, author, professor, and trainer. She is a professor at San Jose State University, and has spent twenty years treating cancer patients and their families. Gregg has been studying, delivering, and evaluating ACT snce 1995, and she has published dozens of research papers, book chapters, and articles on ACT. She is coauthor of Stop Avoiding Stuff and The Diabetes Workbook. Read More Read Less