Final answer:
Being part of a group can influence behavior through deindividuation, groupthink, and collective behavior.
Step-by-step explanation:
Being part of a group can have various impacts on behavior. One consequence is the phenomenon of deindividuation, where individuals feel a sense of anonymity and reduced accountability when in a group. This can lead to behaviors like mob or riot-like actions. Another effect is groupthink, where individuals modify their opinions to align with the perceived consensus of the group. Groupthink can result in faulty decision making and the exclusion of diverse opinions. Additionally, being part of a group can give rise to collective behavior, which is influenced by factors like dramatic events, mobilization for action, and social control.