 ""R. E. Park...[was] Stonequist's teacher and the originator of the term marginal man""

Park's notion that an individual suspended between two cultural realities is marginal results in difficulties in establishing an identity.This work was continued and developed further by Howard S. Becker and others most notably J M Billson, L H Bowker, F M Cox, A F Buono, J B Kamm, J Golden, Mark A Grey, and R A Stebbins.