Scholars of various kinds, including some re-nowned social psychologists, have long documentedthe powerful influence that observed social behaviorhas on subsequent social behavior (e.g., Festinger,1954; Le Bon, 1960; MacKay, 1841/1932; Milgram,Bickman, when, as tacticians, theydecide how to influence the actions of others; andwhen, as experts, they decide whether to seek the inputof others. Let’s take each in turn.
Robert B. Cialdini (Sat,) studied this question.