"Only under the influence of the social and educational psychologists and behaviorists could child-labor, the hobo, unemployment, poverty, and criminality be given their just emphasis; and it seems accurate to ascribe the social sterility of Economic theory and its programme to its ignorance and lack of interest in modern comparative psychology.

Normal psychology, which a few decades ago, started out to be scientific with the good old ideal of a body of truth semper ubique et ad omnibus, is already splitting into introspectionists, behaviorists, genetic, philosophical and other groups, while in the new Freudian movement, Adler and Jung are becoming sectaries, the former drawing upon himself the most impolitic and almost vituperative condemnation of the father of psychoanalysis.