In this paper the outcomes of the continuous studies of will are analyzed. The concept of “will” and the concept of “sense” were introduced in the ancient psychology as theoretical constructs. Later these concepts were replaced with narrower ones that now reflect various psychic processes. The whole concept of “will” has changed through time. In the 20th century it was perceived as a separate psychic process of an unknown nature, that is why K. Levin has even proposed excluding this concept from psychology.

The first outcome can be summarized as follows. It is essential to analyze the way concepts are introduced and developed in terms of a particular science. The reason is that all the basic psychological concepts were initially introduced not to reflect the realities, but to explain them as theoretical constructs. Moreover, it is important to consider the possibility of initial constructs differentiation. For instance, mind can branch out into perception, notion, imagination and thinking. In Russian psychology, the concept of will as a capability of overcoming inner and outer barriers was in active use until the 70-ies. The nature of this phenomenon was unknown. Only the analysis of a willful act generation and the way the concept of will was introduced scientists to formulate the task of identifying the mechanisms of a willful act itself.

The second outcome is as follows. To solve a problem it is needed to replace it with a task to complete. For instance, to understand the nature of will we can replace the problem of its understanding with a task of generating a willful act, compensating for the deficiency of initial motivation.

The third outcome is that it is essential to coordinate a new concept with all the rest concepts of that particular science.