Dr J Richardson & J.F. Forrester et al 
Studies in the Social Psychology of Adolescence [PDF ebook] 

This is Volume X of twelve in a collection of the Sociology of Youth and Adolescence. Originally published in 1951, this is a book of studies in social psychology The study of children in their social relationships, the effect of membership of groups, the school as a social therapeutic institution. These are relatively novel phrases and like all such fresh phrases they point to a new emphasis in the observation of human beings and in the formulation of basic hypotheses as to their nature.