Ecological efficiency and functions of agents' behaviour: what can economic theory say?

The problem of social efficiency and ecological efficiency correlation is considered in the paper. Conceptual framework describing "ecological" efficiency of various systems, such as macroeconomics, a firm or any other system, in terms of economic theory is elaborated. It is shown how ecological efficiencyand the problem of market economy regulation, external effects in particular, correlate. The author introduces correlations which allow to estimate ecological efficiency and ecological programs cost value. Besides, the basic idea is that modern economic theory does not consider ecological development tasks as an integral condition for economic growth. This dominating theoretical paradigm demands changing. In some models of economic growth ecological costs are considered as a factor of its inhibition and its rate reduction. Such representation is not correct in the author's opinion. In the article the concept of social, national economy and ecological efficiencyis highlighted, the basic axioms of efficiency theory are formulated. From the perspective of an economic agent functioning the concept of function of health and qualifications is introduced and a model assessing the state of the agent and its changes in terms of these functions is provided. The author enounces an agent's welfare model from the standpoint of these functions, demonstrates a special state - dysfunction, moreover, introduces an analytical solution for the model, which provides connection between the function of health and qualifications, and demonstrates the possibility of using this approach at the level of macroeconomic analysis.