“There is nothing so practical as a good theory”: How to let it work in practice (the case of Galperin’s theory)

One of the most important and sharply discussed aspects of scientific knowledge is the problem of the possibility for practical applications and results. The application of psychological knowledge in different types of schooling, training, and instruction is a representative illustration of that problem's current state. The aims of this paper are (1) to consider the possibilities and difficulties of such an application, (2) to analyze the reasons for both success and failure, and (3) to try to work out a path toward the construction of an applied theory to bridge the gap between psychological theory (in particular, learning and developmental psychology) and instructional practice. Specifically, this article considers practical applications of the fundamental psychological theory of Planned, Stage-by-Stage Formation of Mental Actions, or the PSFMA theory, by P. Galperin as the target case.