The possible impact of autonomous (vs. the price mechanism and directive control) on the functioning of an economic system is studied. It sheds some light on similarities among economic systems that are quite different in their higher functioning. The survival and stability conditions for a Leontief-type economy demonstrate the role stock signals can play in controlling the behavior of producers and consumers. COMPLICATED SYSTEMS FULFILLING a number of duties are controlled, generally, by multi-stage regulators consisting of both simple and complex mechanisms. For example, some of the functions of the spaceship are controlled by simple, built-in servomechanisms; others are guided half-automatically from the earth; and still others are guided directly by handpower of the astronauts. Or let us take a higher living organism, the human body, say. Some of its functions, respiration, digestion, blood circulation, functioning of the heart, lungs, stomach, intestines, and kidneys are controlled by the autonomous (vegetative) nervous system; other functions by the central nervous system. An economy is also a complicated system, fulfilling a great number of functions. Its processes are controlled by several kinds of mechanisms of low and high degree. The low degree following the physiological analogy, is called autonomous (vegetative) control.2 The first section of our study explains the idea of the control mechanism, draws comparisons between the different mechanisms, and presents some empirical findings. Sections 2 and 3 analyze the autonomous theoretically, with the aid of a general and a special model. In the fourth section we draw conclusions and comment on the previous theoretical analysis.

We propose a clarification of the notion of a soft budget constraint, a concept widely used in the analysis of socialist, transitional, and market economies. Our interpretation is broad enough to embrace most existing approaches to soft budget constraint phenomena and provides a classification of their causes and consequences. In light of this interpretation, we then review the theoretical literature on the subject and compare it with those on other dynamic commitment problems in economics.

The article deals with the phenomenon of the soft budget constraint (SBC). Though originally it was formulated to illuminate economic behavior in socialist economies, this concept is increasingly acknowledged to be pertinent well beyond their realm. The authors have two main objectives: conceptual clarification and survey of formal theoretical literature on SBC. In the first part of the article the accent is made on analyzing the essence of the SBC syndrome, means of its softening and corresponding expectations of organizations. Formal models of SBC in socialist and transition economies are also analyzed.