Stephan Grünewald, a psychologist from Cologne, is the founder of the market and media research institute rheingold. Grünewald is a sought-after speaker and bestselling author, with books including "Germany on the Couch" (2006) and "The Exhausted Society" (2013) as well as "How does Germany tick" (2019).
Phone: +49 221 912777-17
E-mail: gruenewald@rheingold-online.de