The article deals with a recent multivariate research of internal structure of some variables which could be associated with the formation of hypothetical model of self-concept and touches on some conceptions of American, Canadian and Australian psychologists of the structure of self-concept. There follows a methodological part of the study, which comprised 169 high school students from three classical colleges in Ljubljana. The Offer Self-Image Questionnaire OSIQ, Marsh and O'Neill Self-Description Questionnaire SDQ III, Rosenberg Self-Esteem scale, Spielberger Test Anxiety Questionnaire, Harary Personality Profile OBOP and a general questionnaire were administered to all participants. We were interested in particular correlations among the variables and the factor analysis was carried out. 11 factor solution of the variables is the basis of the hypothetical model of self-concept which will be presented in next paper.