WHAT IS Group in Social Psychology?


Diego Sanchez

In social psychology, a group refers to a collection of individuals who interact with one another and share similar characteristics or goals. Group dynamics play a crucial role in shaping our behavior, attitudes, and beliefs. Understanding how groups function is essential for comprehending human behavior in various social contexts.

Types of Groups

Groups can be categorized into different types based on their size, structure, and purpose. Some common types of groups include:

  • Primary Groups: These are small-scale, intimate groups consisting of individuals who have close and long-lasting relationships. Examples include family members and close friends.
  • Secondary Groups: These are larger groups where relationships are more formal and task-oriented.

    Examples include work colleagues or members of a club.

  • In-groups: These refer to groups to which an individual feels they belong and identify with. In-group members often share common values, interests, or characteristics.
  • Out-groups: These are groups that an individual perceives as different from their own group. Out-groups may be seen as competitors or even adversaries.

Theories on Group Behavior

Social psychologists have developed theories to explain the dynamics of group behavior:

Social Identity Theory

Social Identity Theory proposes that individuals derive part of their identity from the groups they belong to. People tend to favor their in-group over out-groups, leading to intergroup bias and discrimination.


Groupthink occurs when group members prioritize consensus over critical thinking and dissenting opinions. This can lead to flawed decision-making processes and hinder creativity within the group.

Social Facilitation

Social Facilitation suggests that the presence of others enhances an individual’s performance on simple or well-learned tasks. However, it can also lead to decreased performance on complex or unfamiliar tasks.

Group Influence on Individuals

Groups have a significant impact on individuals’ behavior, attitudes, and beliefs:

  • Conformity: Individuals may change their behavior or opinions to align with the group’s norms and expectations.
  • Obedience: People may comply with instructions or orders from authority figures within the group, even if it goes against their personal beliefs.
  • Social Loafing: In larger groups, individuals may exert less effort when working collectively compared to when working alone.
  • Social Influence: Groups can influence an individual’s decisions and actions through persuasion, social pressure, or information sharing.


In summary, groups are a fundamental part of social psychology. They shape our behavior, attitudes, and beliefs through various psychological processes. Understanding group dynamics is essential for comprehending human behavior in social contexts and can provide valuable insights into how individuals interact with one another.