EN
The hypothesis of this paper is that there is a link between the degree of income inequality and the competitiveness of the economy. Results highlight that various causal mechanisms may operate in both directions. It means that sometimes equality is positively correlated with the competitiveness (i.e. with trust and development of with social capital) and in some cases inequality may be positively correlated with productivity or innovativeness. It depends (among many things) on the scale of inequality and the mentality of the given society.