Summary of Social Psychology: Influence, Groups, and Obedience
Social Psychology: Influence, Groups, and Obedience Summary
Introduction
Social influence studies how the presence, actions or expectations of others shape an individual's thoughts, feelings and behaviour. This study material focuses on four learning outcomes: identifying factors that lead to conformity, explaining how presence of others changes performance and behaviour, comparing three compliance techniques, and identifying factors that increase obedience.
Definition: Social influence is the process through which the real or implied presence of others can directly or indirectly change an individual's thoughts, feelings or behaviours.
1. Conformity: What and why
What is conformity?
- Conformity = changing one's behaviour, beliefs or judgments to match those of a group or social norm.
Definition: Conformity is the act of adjusting responses to align with group standards, often to fit in or because others are assumed correct.
Key factors that increase conformity
- Group size: Conformity tends to rise as the number of people holding a view increases (effect plateaus around 3–5 people).
- Unanimity: If the entire group agrees, conformity is stronger; one dissenting ally greatly reduces conformity.
- Task difficulty / ambiguity: The more unclear or difficult the task, the more people rely on others (informational social influence).
- Public vs private response: Public responses increase conformity more than private responses.
- Cultural norms: Collectivist cultures typically show higher conformity in face-to-face settings than individualist cultures.
- Perceived expertise or status of group members: People conform more when they view others as knowledgeable or high status.
Famous study (brief)
- Solomon Asch (line judgement task): participants conformed to the obvious wrong answer roughly one-third of trials when confederates unanimously gave the wrong response. Conformity rose with group size and fell when one confederate dissented.
2. How presence of others impacts behaviour
Positive and negative effects on performance
- Social facilitation: Presence of others improves performance on simple or well-learned tasks.
- Social impairment: Presence of others harms performance on complex or new tasks.
Definition: Social facilitation is the enhancement of performance on easy tasks when others are present; social impairment is the deterioration of performance on difficult tasks in others' presence.
Practical example: An experienced pianist performs better in front of an audience (facilitation), whereas a novice may make more mistakes (impairment).
Other group effects
- Group polarisation: After discussion, groups often adopt more extreme positions in the same direction as initial tendencies (riskier or more cautious than average individual views).
- Social loafing: Individuals exert less effort when working in a group on a shared task than when working alone (diffusion of responsibility).
- Deindividuation: Reduced self-awareness and personal responsibility in crowds or anonymous groups, increasing impulsive or anti-normative behaviour.
- Groupthink: Group cohesion and desire for consensus override critical evaluation of alternatives, producing poor decisions.
Practical application: Managers should structure group tasks to reduce social loafing (assign clear individual responsibilities) and discourage groupthink (encourage dissent, use devils-advocate roles).
3. Compliance techniques: compare and contrast
Definition: Compliance is changing behaviour in response to a direct request, without formal authority being invoked.
Three classic techniques
- Foot-in-the-door
- Sequenc
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Social Influence Essentials
Klíčové pojmy: Conformity rises with group size, unanimity and task ambiguity, Asch showed many individuals conform to unanimous incorrect majority, Social facilitation improves easy task performance; social impairment harms difficult tasks, Social loafing occurs when individuals exert less effort in a group than alone, Deindividuation reduces self-awareness and can increase impulsive behaviour in crowds, Foot-in-the-door uses consistency: small request then larger related request, Door-in-the-face uses reciprocal concession: large request then smaller one, Lowball secures commitment then increases cost or obligations, Obedience increases when authority is perceived as legitimate and close, Gradual escalation and diffusion of responsibility make obedience more likely, Group polarisation pushes group decisions toward more extreme positions, Prevent groupthink by encouraging dissent and assigning devil's-advocate roles