Friedemann Schulz von Thun (born August 6, 1944 in Soltau^[1]) is a German psychologist and expert in interpersonal communication and intrapersonal communication. Schulz von Thun worked as a professor of psychology at the University of Hamburg until his retirement on 30 Sep. 2009. Among his various publications is a three-part book series titled "Miteinander Reden" (Talking With Each Other) which has become a standard textbook series in Germany and is widely taught in schools, universities, and vocational skills training. Schulz von Thun developed a number of comprehensive theoretical models to help people understand the determinants and processes of inter-personal exchange and their embeddedness in the individual inner states and the outward situation. He invented the four sides model and developed a widely used visualization of the virtue square.

This article includes a list of general references, but it lacks sufficient corresponding inline citations. (November 2017)

• 1981, Miteinander reden 1 – Störungen und Klärungen. Allgemeine Psychologie der Kommunikation. Rowohlt, Reinbek, ISBN 3-499-17489-8
• 1989, Miteinander reden 2 – Stile, Werte und Persönlichkeitsentwicklung. Differentielle Psychologie der Kommunikation. Rowohlt, Reinbek, ISBN 3-499-18496-6
• 1998, Miteinander reden 3 – Das „innere Team“ und situationsgerechte Kommunikation. Rowohlt, Reinbek, ISBN 3-499-60545-7
• 2004, Klarkommen mit sich selbst und anderen: Kommunikation und soziale Kompetenz. Reden, Aufsätze, Dialoge. Rowohlt, Reinbek, ISBN 3-499-61924-5

As editor

• 2000/2003, with Johannes Ruppel, Roswitha Stratmann: Miteinander reden: Kommunikation für Führungskräfte. Rowohlt, Reinbek, ISBN 3-499-61531-2
• 2004, with Wibke Stegemann: Das Innere Team in Aktion. Praktische Arbeit mit dem Modell. Rowohlt, Reinbek 2004, ISBN 3-499-61644-0