10 Social Psychology

How Social Context Shapes Behavior

Social psychology examines how people’s thoughts, feelings, and actions are shaped by other people and social situations. Behavior reflects both personal characteristics and context: the same person may act differently with friends, at work, or in an unfamiliar group. Perception, attitudes, relationships, groups, and social influence all contribute to how people behave.

Social Perception and Bias

Social perception is how people notice, interpret, and remember information about other people and social situations. People use mental frameworks called Schemas to organize what they know. These frameworks can support quick judgments, but they can also cause people to overlook details or interpret ambiguous behavior in ways that confirm expectations.

When explaining behavior, people may focus on either the situation or personal qualities. The Fundamental attribution error is the tendency to overemphasize a person’s disposition and underemphasize situational influences when explaining someone else’s behavior. For example, someone might call a late coworker irresponsible without considering a transit delay. When explaining their own behavior, people are more likely to notice circumstances. Careful judgment considers what both the person and the situation contributed.

Perceptions of social groups can also be biased. A Stereotype is a generalized belief about a group; Prejudice is an attitude or feeling toward people based on group membership; and Discrimination is behavior that treats people differently on that basis. These concepts are related but distinct: a belief, a feeling, and an action.

Attitudes and Persuasion

An Attitude is an evaluation of a person, object, idea, or issue. It can include feelings (affective), beliefs (cognitive), and behavioral tendencies (behavioral). For example, someone who values recycling may feel positively about it, believe it reduces waste, and recycle regularly. Attitudes do not always predict actions: convenience, social expectations, and available opportunities can affect whether people act on what they believe.

Cognitive dissonance is discomfort that can arise when beliefs, attitudes, or actions conflict. A person who values health but continues an unhealthy habit might reduce this tension by changing the behavior, reconsidering a belief, or rationalizing the inconsistency.

Persuasion is attitude change influenced by communication. When people are motivated and able to think carefully, they may evaluate the strength of arguments. When they are less engaged, cues such as a speaker’s apparent expertise or likeability may weigh more heavily.

Groups, Effort, and Decisions

Groups provide belonging, shared identity, and ways to coordinate action. They also shape judgment and effort. Social facilitation describes how the presence of others can improve performance on familiar or simple tasks, while sometimes making difficult or unfamiliar tasks harder. Social loafing is reduced individual effort when people work together and their contributions are hard to distinguish. Making individual responsibilities clear can help limit loafing.

Group discussion can strengthen members’ initial inclinations, a pattern called Group polarization. In Groupthink, the desire for agreement can suppress doubts and critical evaluation, contributing to poor decisions. Groups can counter these risks by inviting disagreement, considering alternatives, and assigning someone to question the leading proposal.

Relationships and Social Support

Relationships often begin and grow through repeated contact, familiarity, perceived similarity, and mutual liking. Reciprocity—responding to another person’s interest or kindness—can help build trust, while appropriate self-disclosure can deepen closeness. Close relationships also provide companionship and social support, though they can involve conflict and misunderstanding. These are influences, not guarantees: individual preferences and circumstances matter.

Social Influence and Deliberate Judgment

Social influence is the way other people shape judgments and behavior. Conformity means adjusting to group norms or expectations. It may be driven by Normative influence—the desire for approval or to avoid rejection—or Informational influence—the belief that others have useful or more accurate information. For example, a person unsure about what to do in an unfamiliar emergency may look to others for cues.

Compliance is responding to a request; Obedience is following a direct instruction from an authority. Social influence is not always harmful: shared norms can support cooperation and safety. It is useful to pause, assess evidence, and consider consequences, especially when a group or authority discourages questions.

Across these processes, social situations can support cooperation and relationships while also contributing to biased judgments, conformity, or weak decisions. Considering both personal characteristics and context, evaluating evidence, and making deliberate choices can help people assess social judgments.