The editors decided to include Koffka's article "Introspection and the method of psychology," printed below, in the present volume, reasoning that a correct understanding of contemporary psychological currents is a necessary condition for the building of a system of Marxist psychology. The developments in science have made it impossible to work on its problems in a relatively autonomous and isolated fashion in each different country. There is no bigger error in the understanding of the contemporary crisis in psychology than to limit it to the boundaries and frontiers of Russian scientific thought. This is how the representatives of our empirical psychology picture the situation. If you listen to them, all is stable and quiet in the West, just as in "mineralogy, physics, and chemistry," whereas here the Marxists all of a sudden started reforming our science. We repeat once again, it is impossible to present the real state of affairs in a more false and distorted light.