 With Social Role Valorization theory, social role theory describes critical social dynamics that are at the heart of social exclusion, and where valued social roles are a key ingredient to the equalization of opportunity.Wolfensberger mostly worked and published in the field of disability (though he did not use that term), especially intellectual disability, and his further development of role theory, and especially his application of the concept to address complex social problems, has not yet been noticed by mainstream role theorists, though it has had a recognized impact in the field of disability research and theorizing (Heller et al., 1991).Wolfensberger has mined the vast body of social role theory and shown that it has many elements that can be further developed and systematically applied to efforts to improve the lives of vulnerable people.