The study of how individuals interact with groups, and how group pressure can alter thoughts, emotions, and actions. The Social Psychologist is an expert on group dynamics and the social effects of prejudice, cultural beliefs, social condition, roles and responsibilities, personal relationships, and conflict. He is knowledgeable about various social techniques for controlling group thought, including propaganda, disinformation, psychological warfare, psychomanipulation, word framing, advertising, and peer pressure. He can attempt to use his familiarity with these techniques of persuasion to further reduce their effectiveness. Social psychologists also specialize in such fields as memetics and social influence.