BackSocial Psychology: Group Dynamics, Conformity, and Social Cognition
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Social Psychology
Norms & Group Dynamics
Social psychology examines how individuals' thoughts, feelings, and behaviors are influenced by the presence of others. Group dynamics and social norms play a crucial role in shaping behavior within groups.
Social norms: Unwritten guidelines for behavior in social contexts. These are mostly implicit and emerge naturally, guiding what is considered acceptable or unacceptable.
Social approval and ostracism: Conforming to norms can lead to social approval, while violating them may result in ostracism, affecting self-esteem and self-confidence.
Social roles: Expectations attached to specific positions within a group (e.g., leader, follower). The Stanford prison experiment demonstrated how quickly individuals adopt roles, sometimes leading to extreme behaviors.
Formula: , where behavior (B) is a function of the person (P) and the environment (E).
Group Dynamics
Social loafing: The tendency for individuals to put less effort into a task when working with others compared to working alone. Causes include low efficacy beliefs, feeling one's contribution is unimportant, lack of care about the group's outcome, or perceiving others as loafing.
Social facilitation: The presence of others can enhance performance on simple or well-learned tasks but may impair performance on complex or new tasks. This is due to increased emotional arousal and divided attention.
Conformity
Conformity refers to the intentional or unintentional change in behavior to align with group norms. Classic studies, such as Asch's line experiments, illustrate how individuals may conform even when the group is clearly incorrect.
Normative influence: Conforming to be accepted by the group (public compliance).
Informational influence: Conforming because the group’s information is perceived as accurate (private acceptance).
Both influences can operate together, such as in attractiveness ratings.

Example: In Asch's experiment, participants conformed to incorrect group judgments about line lengths, even when the correct answer was obvious.
Factors Affecting Conformity
Personal and situational factors can increase or decrease the likelihood of conformity.
People Tend to Be Less Likely to Conform When... | People Tend to Be More Likely to Conform When... |
|---|---|
Only one other person is in the vicinity | There is a larger group in the vicinity |
There are only strangers in the room | There are friends, family, or acquaintances in the vicinity |
Tasks are extremely clear and simple | The task is unclear or ambiguous |
There is one other nonconformist in the room | Others conform first |
Responses are made anonymously | Responses are made publicly |

Groupthink
Groupthink is a decision-making problem where group members prioritize harmony and agreement over critical analysis. This can lead to poor decisions, minimization of risks, and overconfidence. Notable examples include the Challenger disaster and misjudgments about weapons of mass destruction (WMDs).
Problems: Minimization of potential problems, settling too quickly on ideas, and overconfidence.
Obedience to Authority
Obedience involves following orders from an authority figure, sometimes against personal conscience. The Milgram experiment demonstrated that ordinary people could be led to perform harmful actions under authority pressure.
Reducing obedience: Lowering experimenter pressure, increasing awareness of the victim's pain, and introducing dissent among group members can reduce obedience rates.
The Bystander Effect
The bystander effect (or bystander apathy) is the phenomenon where individuals are less likely to help someone in need when others are present. This is partly due to the diffusion of responsibility and both normative and informational influences.
Example: The case of Kitty Genovese, where multiple witnesses failed to intervene during an emergency.
Social Cognition
Person Perception
Person perception involves the processes by which we categorize and form judgments about others. This can be explicit (conscious) or implicit (unconscious), often relying on schemas—organized clusters of knowledge and expectations.
Thin slices of behavior: Quick judgments based on brief observations, which can sometimes be surprisingly accurate but also prone to bias.
Consequences: Person perception can influence legal and political decisions and lead to self-fulfilling prophecies.
Self-Perception and Attribution
Self-perception refers to how we view ourselves, often with a bias toward maintaining a positive self-image. Attribution theory explains how we interpret the causes of behavior:
Internal (dispositional) attribution: Attributing behavior to personal traits.
External (situational) attribution: Attributing behavior to external circumstances.
Fundamental Attribution Error (FAE): The tendency to overemphasize internal factors when explaining others' behavior, while attributing our own positive actions to internal causes and negative actions to external causes.
Prejudice and Discrimination
Prejudice and discrimination arise from group identification and social categorization.
Ingroup bias: Favoring one's own group over others, which can boost self-esteem.
Stereotype: A set of beliefs about the characteristics of a specific social group.
Prejudice: An emotional response toward outgroup members.
Discrimination: Behavior that disadvantages members of a social group.
Implicit Associations Test (IAT)
The IAT measures implicit biases by recording reaction times to images or words associated with different social categories. Participants are asked to quickly categorize stimuli (e.g., faces, words) as belonging to groups (e.g., Black/White, Good/Bad).

Procedure: Participants group stimuli into social categories and positive/negative words, both separately and in combination (e.g., Black + Bad vs. White + Good).
Interpretation: Faster responses to stereotype-congruent pairings indicate stronger implicit associations.

IAT Results Example: Age Preferences
Large-scale IAT data reveal that most respondents show an automatic preference for young people over old people, with varying degrees of strength.
Preference | Percent of Respondents |
|---|---|
Strong automatic preference for Young people | 30% |
Moderate automatic preference for Young people | 30% |
Slight automatic preference for Young people | 17% |
Little to no automatic preference | 15% |
Slight automatic preference for Old people | 4% |
Moderate automatic preference for Old people | 2% |
Strong automatic preference for Old people | 1% |

Additional info: Implicit biases measured by the IAT may not always align with explicit attitudes, but they can influence behavior in subtle ways, such as hiring decisions or social interactions.