Erwin, Cheryl

Jane Nelsen, Ed.D., coauthor of the bestselling Positive Discipline series, is a licensed marriage, family, and child therapist. Her books have sold over a million copies. She lives in Salt Lake City.
Cheryl Erwin, M.A., is a marriage and family therapist and the coauthor of numerous books in Prima's POSITIVE DISCIPLINE series on raising great children. She lives in Reno, Nevada.