EN
Excessive investment propensity is one of the most serious problems faced by the centrally planned economy. The analysis performed by the author aims at determining the causes of excessive investment propensity at all levels of the economic hierarchy which are inherent in the socio-economic system. The author distinguishes between bottom-top (enterprises, unions of producers, branch ministries) and top-bottom (central planner) drives to investment when analyzing the causes of their existence in connection with the mechanism of making investment decisions. An important part of the problem of excessive propensity to invest, being also discussed in the article, is impact of the above mentined drives to investon the excessive investment demand within the entire system. When describing the pressure exerted by economic units at lower levels of the management system on entities situated at higher levels the author presents a mechanism of format ion of informal and cover t groups of interests and their role in making in vestment decisions. Although the object of this analysis is not construction of positive propositions referring to the entire system, among conclusions drawn on the basis of the analysis, there can be also found a postulate of "hard" monetary-budgetary constraints for economic units as the only effective impediment to excessive investment propensity.