Remembering the "lens": visual transformations of a concept from Heider to Brunswik.

It is argued that Frederic Bartlett's views on the social and cultural determinants of remembering and recognition provide a useful background for analyzing the transformations of psychological concepts and images when they are introduced into new academic collectives. An example of a "Bartlettian" view on the history of psychology is given by reconstructing and contextualizing the transformation of the "lens," a model of human perception that was invented by Fritz Heider in the 1920s and adopted by Egon Brunswik from the 1930s onwards. Heider's early work suggested a new perspective on the epistemological relation between subject, media, and object that was devised to create a new conceptual foundation for academic psychology. Brunswik, on the other hand, transformed Heider's "lens" into a clear-cut experimental framework that was based on the physicalist and operationalist demands of logical empiricism, the movement for the "unity of science," and, after his migration to Berkeley, neobehaviorism. This episode provides many similarities with Bartlett's theory of the social determinants of knowledge and the shaping power of collective presuppositions, norms, and ideals.