Ross W. Greene, Ph.D., is the originator of the Collaborative & Proactive Solutions (CPS) model described in this book, an approach he has researched extensively, along with colleagues throughout the world. Dr. Greene served on the faculty at Harvard Medical School for over 20 years, and is currently Founding Director of the non-profit Lives in the Balance and adjunct Associate Professor in the Department of Psychology at Virginia Tech. He consults extensively to families, schools, and therapeutic facilities and lectures widely internationally. Vast free resources on the CPS approach can be found on the Lives in the Balance website (www.livesinthebalance.org).