Donald Meichenbaum, Ph.D in Clinical Psychology is currently Research Director of Melissa Institute for Violence Prevention, Miami (melissainstitute.org). He is one of the founders of cognitive behavior therapy. He was voted one of the most influential psychotherapists of the 20th century. Latest books include "Roadmap to Resilience" (www.roadmaptoresilience.com) and "Evolution of Cognitive Behavior Therapy: A Personal and Professional Journey."
Albert Ellis, PhD, was an American psychologist who in 1955 developed Rational Emotive Behavior Therapy (REBT). He held M.A. and Ph.D. degrees in clinical psychology from Columbia University and American Board of Professional Psychology (ABPP). He also founded and was the President of the New York City-based Albert Ellis Institute for decades.
Based on a 1982 professional survey of US and Canadian psychologists, he was considered as the second most influential psychotherapist in history (Carl Rogers ranked first in the survey; Sigmund Freud was ranked third). Psychology Today noted, "No individual—not even Freud himself—has had a greater impact on modern psychotherapy."
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