The Praeger Handbook of Education and Psychology

Although its historians have tried to drag in anyone from Aristotle to Rousseau as early psychologists (rather in the way that the Mormons retrospectively convert their ancestors), psychology as a separate discipline is really a very late child of the enlightenment, only separating itself from philosophy towards the latter half of the nineteenth century. As G.S. Hall published The Content of Children's Minds in 1883 and set up a pedagogical seminary in Clark University four years later, it can be seen that education was one of the very first interests of psychologists.

This emphasis has continued to the present day....