A research team which stands for Quality
Our authors
Prof. Dr. John G. Geier, Prof. Dr. Günter F. Müller and Rob Lebow have devoted themselves to the topics of social and personal competence for many years. their scientific research work and their extensive practical experience have flowed into persolog's models.
The pioneer of personality models
Prof. Dr. John G. Geier is a pioneer in the world of personality models. He is the originator and developer of the DISC Personality Profile (over 40 million users world-wide) and persolog GB's licensor. In addition, John Geier is the author of many books.
Specialist in Human Development
persolog's analysis tools and concepts would be unthinkable without Prof. Dr. Dorothy Downey co-author, long-standing researcher and lecturer at the University of Minnesota and Vice Chairman of Geier Learning International.
Researcher in the area of self-management
Prof. Dr. Günter F. Müller, Professor for Social, Occupational, Industrial and Organisational Psychology at the Psychology Department of the University in Landau. The main focus of his research is the topic of self-management.






