In his monumental work, "Adolescence", G. Stanley Hall showed the value of interdisciplinary scholarship and respect for research, which had a policy orientation. Over the course of the 20th century these two characteristics faded in adolescent studies as psychology took dominance and basic research was given priority over policy considerations. An argument is made that there is value in revisiting Hall's approach as studies of adolescence can be enriched through interdisciplinary efforts and research which brings policy to the forefront.