sentences:  Zazzo wished to aid children who were not succeeding in school, as opposed to detecting children with psychological problems.In 1950, Zazzo taught at the same time at the Institute of Psychology, the National Institute for the Vocational guidance, and the laboratory of EPHE, where he succeeded Wallon, before becoming president of the French Company of Psychology in 1955 and in 1977.In 1967 he occupied the presidency of the "Société Française de Psychologie", and in 1968 he was appointed president of the "Groupement Français d'Études de Neuro-Psychopathologie Infantile".