Jean Piaget (1896-1980) is well-known—especially among psychologists and education theorists—to have been a distinctly “Swiss” scholar. Because this has not itself been examined, this dissertation focuses on and analyzes Piaget's public image after WWII until his death. The theoretical framework is then presented in relation to concepts derived from popular science, media visibility, and especially the public understanding of science, while the methodology derives from history of science, microhistory, media studies, and sociology of science. Content analyses of press articles are followed by cases studies showing Piaget's strategies in responding to the public interest and the media's stereotyping of his most distinctive traits. We also characterized Piaget's attitude vis-à-vis the media, in which he let them emphasize his theory of cognitive development and deemphasize his private life.