Cass R. Sunstein and Reid Hastie, Wiser: Getting Beyond Groupthink to Make Groups Smarter (Boston: Harvard Business Review Press, 2014).

Liran Goldman and Michael A. Hogg, «Going to Extremes for One’s Group: The Role of Prototypicality and Group Acceptance», Journal of Applied Social Psychology 46 (2016): 544–53; Michael A. Hogg, John C. Turner, and Barbara Davidson, «Polarized Norms and Social Frames of Reference: A Test of the Self-Categorization Theory of Group Polarization», Basic and Applied Social Psychology 11 (1990): 77–100.