volition 4 Weiner 1988 - An attributional analysis of reactions to stigmas Jun 16, 2022 Ryan 2000 - Self-Determination Theory and the Facilitation of Intrinsic Motivation, Social Development, and Well-Being Jun 16, 2022 Langer 1975 - The Illusion of Control Jun 16, 2022 Bandura 1977 - Self-efficacy - toward a unifying theory of behavioral change Jun 16, 2022