A registered clinical psychologist, Thomas W. Phelan, Ph.D., has worked with children, adults and families for over 40 years.
The author of numerous books, DVDs and audios, he is best known for his ground-breaking book, 1-2-3 Magic: 3 Step Discipline for Calm, Effective, and Happy Parenting, which has sold over 2 millioncopiesand is now inits 6th edition.

https://www.123magic.com/