he studied including the following: L’association des idées (1903) Psychologie de l’enfant et pédagogie expérimentale (1909) L’éducation fonctionnelle (1931) La genèse de l’hypothèse (1933) See also Cryptamnesia Operant conditioning References Further reading External links Short biography, bibliography, and links on digitized sources in the Virtual Laboratory of the Max Planck Institute for the History of Science 1873 births 1940 deaths Child psychologists Fellows of the British Psychological Society