Abstract. Evolutionary process of managerial decision making means a trend of development of collective ones. It is better to get involved much more employees in the process of decision making, However, It has the negative side as well. It is expressed in "group thinking”. This article offers some of the ways to eliminate the shortcomings.

Key words:  An individual and group decision; group thinking; mutually interchangeable and inter complementary employees; self-defense instinct.