This article is devoted to an extensive and rather modern scientific area -Decision-making theory. The author uses logical-mathematical bases of Decision-making theory to make an explication of the existential features of the choice, which is based on four main martingales: trend, time, men and phobia. The last four constituents "have power" above human-being and impress the situation of decision-making. The impression on such situation allow to minimize a risk, to predict results and to create

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... a strategy with positive result. INTRODUCTIONS Decision theory has an important place in the area of economical management and financial tradings of investments at the market in the political and social area, ethics, bioethics and jura. Decision theory has a large theoretical bases in achievements of exact sciences: mathematical statistics, the theory of possibility, prediction and games and as well interdisciplinary sciences: neuroeconomics, economical psychology, which are popular nowadays. However in the Decision -theory is shown an imbalance between technical, statistical and psychological methods. That is why this research has a task to use technical, statistical and psychological methods [12] . Decision Theory belongs to the area of men's ethical responsibility, because it is based on existential factors and making a choice situation. So making a decision is a choice of a person, who is impressed by ethical features of that society, where he was born, grew up and continue to live [19; 20; 21]. In this case the ethic adds some information in the situation of a choice and the routine to create a space of the personal responsibility. The decision is a definite variant of an answer, it is necessary to interpret the situation of the choice. To minimize risks by the choice is possible thanks to the model of equilibrium ethics -managing ethical and existential structure, which connect all processes in the world and it is "internal law and principle in us", according to Kant's ethical model it is an answer to the second main philosophical question -"What should I do?". In other words: what should I do in this case to minimize my risks and achieve a success.? [1, 102]. In our case this connection tries to fix laws of men's behavior, which are typical for definite trends-pricing trends, market mechanisms and trends and so on. The idea of ethical trends (market, politics, technologies, culture etc) has the following purpose to create the model of equilibrium management of trends, to rule the case in any situation of decision making and to minimize risks and loses and to increase positive results [11, 199].