The article contains detailed analysis of ethno-clanship relations in the republics of Central Asia and the Caucasus as an expressed manifestation of demodernization processes. As is demonstrated by the author, the institutional milieu has been so evolving there that clanship regulations began step by step to prevail over the rules of both planned and market economy. The main features of clanship organization of society are the following: availability of legal lacunae, prevalence of opportunism and of investment shortsightedness as behavioral norms, low degree of rationality of economic behavior, immense share of barter, of non-payments and of ready money in the circulation sphere, huge role of shadow sector of economy and gradual elimination of distinctions between legal and illegal kinds of activities. Such characteristics effectively impede modernization of these societies.