How Needs-Supplies Fit Processes With Teachers, Peers, and Parents Relate to Youth Outcomes: A Theoretical and Methodological Extension of Self-Determination Theory.

According to self-determination theory (SDT), relationships that support the needs for autonomy, competence, and relatedness are essential to youth development. It is yet unknown whether adolescents differ in what constitutes "optimal" supplies of support. This research proposes methodological extensions to analyze how the degree of fit or misfit between needs versus supplies in support (i.