The Eysenck Personality Profiler (EPP) was developed by Professor Hans Eysenck and Dr Glenn Wilson. It is widely used in research, for clinical purposes and in consultancy. In business, it is used as a selection and appraisal tool. The Eysenck Personality Profiler (EPP) measures 21 traits of personality that are consistent with the three major dimensions of personality as defined by Professor Hans Eysenck. A Lie Scale is also included.