The theme of this thesis is to investigate the dimensions of extraversion-introversion as one of the fundamental characteristics of human personality. In the theoretical part, we are bringing a brief history of efforts to define and describe this dimension, and we also introduce some current concepts and appropriate diagnostic methods. Furthermore, in the theoretical part, we briefly focus on the specifics of personality dimensions of extraversion in the context of artistically creative personality. The aim of this work is not to contribute to answering the question about the existence of a relationship between the creative artistic process and a creator's introversion or extraversion. Artists are a psychologically widely studied group so we decided to use some specific knowledge about their extraversion or introversion in our research. The aim of the practical part of our thesis is to contribute to the search for the possible connections between personality theories of H. Rorschach and H. J. Eysenck. Both theories and methods (the Rorschach test and Eysenck Personality Questionnaire - EPQ-R) are based on the neurobiological characteristics of the individual and typical ways of responding but they differ in their approach. H. J. Eysenck's assumption of rather less extraversion of artists, as well...