David J. Lieberman

David J. Lieberman, PhD, is an award-winning author and internationally recognized leader in the fields of human behavior and interpersonal relationships. Techniques based on his nine books, which have been translated into 24 languages, are used by governments, corporations, and mental health professionals in more than 25 countries. Dr. Lieberman's work has been featured in publications around the world, and he has appeared as a guest expert on more than 300 radio and television programs.