A research team which stands for quality
Our authors
Prof. Dr. John G. Geier and Prof. Dr. Dorothy Downey 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
- D-I-S-C - his life's work
Prof. Dr. John G. Geier is a pioneer in the world of personality models. He is the originator and developer of the persolog Personality Factor Profile (over 40 million users world-wide) with the behavioral dimensions D, I, S and C and persolog GmbH's licensor. In addition, John Geier is the author of many books.
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- Clinical psychology is the basis
Specialist for 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.
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