This open access book introduces the legacy of Piotr Galperin to a wider audience of researchers, educators and psychologists.  Previous translations of Galperin’s work present only some aspects of his conceptual thinking; however, his main contribution to the general, genetic and pedagogical psychology as a unique holistic and systemic approach to studying of psychological phenomena and processes, mechanisms of their formation and development, is still quite unknown in most parts of the world. weiterlesen