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Introduction to Sociology

Social Sciences

Types of Groups

Tác giả: OpenStaxCollege

Most of us feel comfortable using the word “group” without giving it much thought. In everyday use, it can be a generic term, although it carries important clinical and scientific meanings. Moreover, the concept of a group is central to much of how we think about society and human interaction. Often, we might mean different things by using that word. We might say that a group of kids all saw the dog, and it could mean 250 students in a lecture hall or four siblings playing on a front lawn. In everyday conversation, there isn’t a clear distinguishing use. So how can we hone the meaning more precisely for sociological purposes?

Defining a Group

The term group is an amorphous one and can refer to a wide variety of gatherings, from just two people (think about a “group project” in school when you partner with another student), a club, a regular gathering of friends, or people who work together or share a hobby. In short, the term refers to any collection of at least two people who interact with some frequency and who share a sense that their identity is somehow aligned with the group. Of course, every time people are gathered it is not necessarily a group. A rally is usually a one-time event, for instance, and belonging to a political party doesn’t imply interaction with others. People who exist in the same place at the same time, but who do not interact or share a sense of identity—such as a bunch of people standing in line at Starbucks—are considered an aggregate, or a crowd. Another example of a non-group is people who share similar characteristics but are not tied to one another in any way. These people would be considered a category, and an example would be that all children born from approximately 1980–2000 are referred to as “Millennial.” Why are Millennials a category and not a group? Because while some of them may share a sense of identity, they do not, as a whole, interact frequently with each other.

Interestingly, people within an aggregate or category can become a group. During disasters, people in a neighborhood (an aggregate) who did not know each other might become friendly and depend on each other at the local shelter. After the disaster ends and the people go back to simply living near each other, the feeling of cohesiveness may last since they have all shared an experience. They might remain a group, practicing emergency readiness, coordinating supplies for next time, or taking turns caring for neighbors who need extra help. Similarly, there may be many groups within a single category. Consider teachers, for example. Within this category, groups may exist like teachers’ unions, teachers who coach, or staff members who are involved with the PTA.

Types of Groups

Sociologist Charles Horton Cooley (1864–1929) suggested that groups can broadly be divided into two categories: primary groups and secondary groups (Cooley 1909). According to Cooley, primary groups play the most critical role in our lives. The primary group is usually fairly small and is made up of individuals who generally engage face-to-face in long-term emotional ways. This group serves emotional needs: expressive functions rather than pragmatic ones. The primary group is usually made up of significant others, those individuals who have the most impact on our socialization. The best example of a primary group is the family.

Secondary groups are often larger and impersonal. They may also be task-focused and time-limited. These groups serve an instrumental function rather than an expressive one, meaning that their role is more goal- or task-oriented than emotional. A classroom or office can be an example of a secondary group. Neither primary nor secondary groups are bound by strict definitions or set limits. In fact, people can move from one group to another. A graduate seminar, for example, can start as a secondary group focused on the class at hand, but as the students work together throughout their program, they may find common interests and strong ties that transform them into a primary group.

Engineering and construction students gather around a job site. How do your academic interests define your in and out-groups? (Photo courtesy of USACEpublicaffairs/flickr)

In-Groups and Out-Groups

One of the ways that groups can be powerful is through inclusion, and its inverse, exclusion. In-groups and out-groups are subcategories of primary and secondary groups that help identify this dynamic. Primary groups consist of both in-groups and out-groups, as do secondary groups. The feeling that one belongs in an elite or select group is a heady one, while the feeling of not being allowed in, or of being in competition with a group, can be motivating in a different way. Sociologist William Sumner (1840–1910) developed the concepts of in-group and out-group to explain this phenomenon (Sumner 1906). In short, an in-group is the group that an individual feels she belongs to, and she believes it to be an integral part of who she is. An out-group, conversely, is a group someone doesn’t belong to; often there may be a feeling of disdain or competition in relation to an out-group. Sports teams, unions, and sororities are examples of in-groups and out-groups; people may belong to, or be an outsider to, any of these.

While these affiliations can be neutral or even positive, such as the case of a team sport competition, the concept of in-groups and out-groups can also explain some negative human behavior, such as white supremacist movements like the Ku Klux Klan, or the bullying of gay or lesbian students. By defining others as “not like us” and inferior, in-groups can end up practicing ethnocentrism, racism, sexism, ageism, and heterosexism—manners of judging others negatively based on their culture, race, sex, age, or sexuality. Often, in-groups can form within a secondary group. For instance, a workplace can have cliques of people, from senior executives who play golf together, to engineers who write code together, to young singles who socialize after hours. While these in-groups might show favoritism and affinity for other in-group members, the overall organization may be unable or unwilling to acknowledge it. Therefore, it pays to be wary of the politics of in-groups, since members may exclude others as a form of gaining status within the group.

Reference Groups

Athletes are often viewed as a reference group for young people. (Photo courtesy of Johnny Bivera/U.S. Navy/Wikimedia Commons)

A reference group is a group that people compare themselves to—it provides a standard of measurement. In American society, peer groups are common reference groups. Kids and adults pay attention to what their peers wear, what music they like, what they do with their free time—and they compare themselves to what they see. Most people have more than one reference group, so a middle school boy might not just look at his classmates but also at his older brother’s friends and see a different set of norms. And he might observe the antics of his favorite athletes for yet another set of behaviors.

Some other examples of reference groups can be an individual’s church, synagogue, or mosque; one’s cultural center; workplace; family gathering; and even one’s parents. Often, reference groups convey competing messages. For instance, on television and in movies, young adults often have wonderful apartments, cars, and lively social lives despite not holding a job. In music videos, young women might dance and sing in a sexually aggressive way that suggests experience beyond their years. At all ages, we use reference groups to help guide our behavior and show us social norms. So how important is it to surround yourself with positive reference groups? You may never meet or know a reference group, but it still impacts and influences how you act. Identifying reference groups can help you understand the source of the social identities you aspire to or want to distance yourself from.


Groups largely define how we think of ourselves. There are two main types of groups: primary and secondary. As the names suggest, the primary group is the long-term, complex one. People use groups as standards of comparison to define themselves—both who they are and who they are not. Sometimes groups can be used to exclude people or as a tool that strengthens prejudice.

Section Quiz

What does a Functionalist consider when studying a phenomenon like the Occupy Wall Street movement?

  1. The minute functions that every person at the protests plays in the whole
  2. The internal conflicts that play out within such a diverse and leaderless group
  3. How the movement contributes to the stability of society by offering the discontented a safe, controlled outlet for dissension
  4. The factions and divisions that form within the movement

What is the largest difference between the Functionalist and Conflict perspectives and the Interactionist perspective?

  1. The former two consider long-term repercussions of the group or situation, while the latter focuses on the present.
  2. The first two are the more common sociological perspective, while the latter is a newer sociological model.
  3. The first two focus on hierarchical roles within an organization, while the last takes a more holistic view.
  4. The first two perspectives address large-scale issues facing groups, while the last examines more detailed aspects.

What role do secondary groups play in society?

  1. They are transactional, task-based, and short-term, filling practical needs.
  2. They provide a social network that allows people to compare themselves to others.
  3. The members give and receive emotional support.
  4. They allow individuals to challenge their beliefs and prejudices.

When a high school student gets teased by her basketball team for receiving an academic award, she is dealing with competing ______________.

  1. primary groups
  2. out-groups
  3. reference groups
  4. secondary groups

Which of the following is NOT an example of an in-group?

  1. The Ku Klux Klan
  2. A fraternity
  3. A synagogue
  4. A high school

What is a group whose values, norms, and beliefs come to serve as a standard for one's own behavior?

  1. Secondary group
  2. Formal organization
  3. Reference group
  4. Primary group

A parent who is worrying over her teenager’s dangerous and self-destructive behavior and low self-esteem may wish to look at her child’s:

  1. reference group
  2. in-group
  3. out-group
  4. All of the above

Short Answer

How has technology changed your primary groups and secondary groups? Do you have more (and separate) primary groups due to online connectivity? Do you believe that someone, like Levy, can have a true primary group made up of people she has never met? Why or why not?

Compare and contrast two different political groups or organizations, such as the Occupy and Tea Party movements, or one of the Arab Spring uprisings. How do the groups differ in terms of leadership, membership, and activities? How do the group’s goals influence participants? Are any of them in-groups (and have they created out-groups)? Explain your answer.

The concept of hate crimes has been linked to in-groups and out-groups. Can you think of an example where people have been excluded or tormented due to this kind of group dynamic?

Further Research

For more information about cyberbullying causes and statistics, check out this website:


Cooley, Charles Horton.1963 [1909]. Social Organizations: A Study of the Larger Mind. New York: Shocken.

Cyberbullying Research Center. Retrieved November 30, 2011 (

Hinduja, Sameer and Justin W. Patchin.2010. “Bullying, Cyberbullying, and Suicide.”Archives of Suicide Research 14(3): 206–221.

Khandaroo, Stacy T. 2010. “Phoebe Prince Case a ‘Watershed’ in Fight Against School Bullying.” Christian Science Monitor, April 1. Retrieved February 10, 2012 (

Leibowitz, B. Matt. 2011. “On Facebook, Obamas Denounce Cyberbullying.”, March 9. Retrieved February 13, 2012 (

Occupy Wall Street. Retrieved November 27, 2011. (

Schwartz, Mattathias. 2011. “Pre-Occupied: The Origins and Future of Occupy Wall St.” New Yorker Magazine, November 28.

Sumner, William. 1959 [1906]. Folkways. New York: Dover.

“Times Topics: Occupy Wall Street.” New York Times. 2011. Retrieved February 10, 2012 (

We Are the 99 Percent. Retrieved November 28, 2011 (

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