This article explores interactions between intellectuals, human scientists,
and engineers in France in the 1930s, by studying the example of one engin
eer, Jean Coutrot. In doing so, it argues for a rethinking of the period an
d a fresh approach to the history of modernization in France. Particular at
tention is paid to the Centre d'etudes des problemes humains, founded by Co
utrot in 1936, and to the way in which this center fostered a series of col
laborations between the engineer and experts in various branches of applied
psychology.