http://www.bestmastersinpsychology.com/30-most-influential-psychologists-working-today/
1.Hans-Werner Gessmann is a German psychologist and psychodramatherapist currently based in Russia. He is the founder of humanistic psychodrama, a form of therapy that involves role reversal. He is also ranked as one of the world’s most preeminent psychotherapists. Gessmann teaches clinical psychology at the government-owned Nekrassow University Kostroma, where he is also the director of the International Centre for Clinical Psychology and Psychotherapy.
In 1973 Gessmann established the Psychotherapeutic Institute Bergerhausen in his hometown of Duisburg, which currently trains over 1,500 psychotherapists. He is a professor of general and developmental psychology at the governmental Academy of Social Administration Moscow and has served as a professor of systemic family therapy at the Municipal Pedagogical Psychological University Moscow since February 2012.
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