Social influence is the process by which people change their behavior, attitudes, or choices in response to the real or imagined presence of others, whether to fit in, gain approval, or get accurate information. In AP Psychology it shows up most clearly in adolescent peer relationships (Topic 6.4).
Social influence is the umbrella term for every way other people shape what you do. That includes obvious pressure (a friend telling you to skip class), subtle pressure (everyone else laughing, so you laugh too), and even imagined pressure (changing your outfit because of what people might think). The key idea is that the influence comes from the social environment, not from inside you.
In the AP Psych course, social influence connects two big areas. In Topic 6.4 (Adolescent Development), it explains why teens are so responsive to peers. Adolescence is when identity formation kicks into high gear, so peer approval carries unusual weight, which is why peer pressure is basically social influence operating at maximum strength. The same concept also powers the social psychology side of the course, where it splits into two flavors. Normative social influence means changing your behavior to be liked or accepted. Informational social influence means changing your behavior because you assume others know something you don't.
Social influence sits at the intersection of developmental psychology and social psychology, which makes it a connector concept. In Topic 6.4 (Adolescent Development), it explains the shift from parental influence to peer influence during the teen years, and it pairs directly with Erikson's identity vs. role confusion stage, since adolescents build identity largely through interpersonal relationships. The concept also matters for understanding adolescent risk-taking and stress. The 2018 SAQ asked about a survey on high school students' stress levels, and social influence (peer expectations, fitting in, social comparison) is exactly the kind of mechanism you can use to explain adolescent stress in a short-answer response. If you can name which type of influence is operating in a scenario, you're ahead of most test-takers' generic 'peer pressure' answers.
Keep studying AP Psychology Unit 6
Conformity (Social Psychology)
Conformity is the most common result of social influence. Social influence is the pressure; conformity is the behavior change. Asch's line-judgment studies are the classic example, where people gave obviously wrong answers just because the group did.
Normative & Informational Social Influence (Social Psychology)
These are the two engines of social influence. Normative means you go along to be liked or avoid rejection. Informational means you go along because the group seems to know better. Exam questions love asking you to tell them apart in a scenario.
Erikson's Psychosocial Stages (Topic 6.4)
Erikson argued adolescents resolve identity vs. role confusion through their relationships. That's why social influence peaks in the teen years. Peers aren't just company, they're the raw material for building an identity.
Formal Operational Stage (Topic 6.4)
Piaget's formal operational stage gives adolescents abstract thinking, including the ability to imagine what others think of them. That new self-consciousness (think imaginary audience) makes teens far more sensitive to social influence than younger kids.
Social influence usually shows up in scenario-based multiple choice questions. You'll get a short story (a teen changes their music taste after joining a new friend group, a student copies others' answers on a confusing survey question) and you have to identify which concept is operating, often choosing between normative and informational social influence. In Topic 6.4 questions, it appears as the explanation behind peer influence, like the practice question linking Erikson's idea that identity develops from interpersonal relationships. On free-response questions, it works as an applied concept. The 2018 SAQ about a survey of high school students' stress and absences is a good model, since social influence gives you a research-grounded way to explain why adolescents experience social pressure as stress. The move that earns points is applying the term to the specific person in the prompt, not just defining it.
Social influence is the broad category; conformity is one specific outcome of it. Social influence covers any way others affect your behavior, including obedience to authority and persuasion. Conformity is narrower, meaning you adjust your behavior or thinking to match a group standard. Every act of conformity involves social influence, but not all social influence produces conformity. If an MCQ scenario involves matching a group, answer conformity; if it asks about the general process of others shaping behavior, answer social influence.
Social influence is any change in behavior, attitude, or belief caused by the real or imagined presence of other people.
It comes in two main flavors on the exam: normative social influence (changing to be accepted) and informational social influence (changing because you think others know better).
In Topic 6.4, social influence explains why adolescents shift from parental influence toward peer influence as they build identity.
Erikson's identity vs. role confusion stage and social influence work together, because teens form identity through interpersonal relationships.
Conformity is a result of social influence, not a synonym for it; social influence is the broader umbrella term.
On FRQs, define the term and then apply it to the specific scenario, like explaining how peer expectations contribute to high school students' stress.
Social influence is the process by which other people's opinions, suggestions, and behaviors change what you do, think, or believe. In the AP course it appears in adolescent development (Topic 6.4) as peer influence and in social psychology as conformity and obedience.
No, peer pressure is just one form of social influence. Social influence also includes obedience to authority, conformity to group norms, and even imagined judgment (changing behavior because of what others might think). Peer pressure is social influence coming specifically from people your own age.
Social influence is the broad process of others affecting your behavior; conformity is one specific outcome, where you adjust to match a group. Asch's line studies showed conformity, which is social influence in action, but obedience and persuasion are social influence too.
Normative social influence means changing your behavior to be liked or to avoid rejection, like laughing at a joke you don't get. Informational social influence means changing because you assume others have better information, like evacuating a building when everyone else does.
Adolescence combines Erikson's identity vs. role confusion stage, where identity forms through relationships, with new abstract thinking from Piaget's formal operational stage, which lets teens imagine how others see them. That combination makes peer approval feel high-stakes, so social influence hits hardest in the teen years.