November 21, 2023 DeCaro, D.A., M.A. Janssen and A. Lee (2015). Synergistic effects of voting and enforcement on internalized motivation to cooperate in a resource dilemma. Judgment and Decision Making 10(6): 511-537. Home » DeCaro, D.A., M.A. Janssen and A. Lee (2015). Synergistic effects of voting and enforcement on internalized motivation to cooperate in a resource dilemma. Judgment and Decision Making 10(6): 511-537.