TY - RPRT AU - Benabou, Roland TI - Groupthink: Collective Delusions in Organizations and Markets PY - 2013/Mar/ PB - Institute of Labor Economics (IZA) CY - Bonn T2 - IZA Discussion Paper IS - 7322 UR - https://www.iza.org/index.php/publications/dp7322 AB - This paper investigates collective denial and willful blindness in groups, organizations and markets. Agents with anticipatory preferences, linked through an interaction structure, choose how to interpret and recall public signals about future prospects. Wishful thinking (denial of bad news) is shown to be contagious when it is harmful to others, and self-limiting when it is beneficial. Similarly, with Kreps-Porteus preferences, willful blindness (information avoidance) spreads when it increases the risks borne by others. This general mechanism can generate multiple social cognitions of reality, and in hierarchies it implies that realism and delusion will trickle down from the leaders. The welfare analysis differentiates group morale from groupthink and identifies a fundamental tension in organizations' attitudes toward dissent. Contagious exuberance can also seize asset markets, generating investment frenzies and crashes. KW - cognitive biases anticipatory feelings KW - organizational culture KW - overconfidence KW - optimism KW - morale KW - market exuberance KW - manias speculative bubbles KW - market crashes KW - financial crises KW - toxic assets KW - groupthink KW - wishful thinking KW - cognitive dissonance KW - resolution of uncertainty KW - psychology ER -