Abstract
In the article problems connected with possibilities of analyzing human behavior in context of propensities were discussed. Main focus was put on differences in propensities with respect to sex, also in context of E. Fromm’s personality theory. Methodological issues related to propensities were presented. Definition of propensity and methods of measuring propensities were also proposed. In empirical example differences in propensity to smoke cigarettes and propensity to drink alcohol with respect to sex in Polish voivodeships in year 2004 were estimated. Also, econometric models explaining that kind of propensities were introduced.