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Social Groups: Dyad and Triad & In-Groups and Out-Groups

Social Groups: Dyad and Triad & In-Groups and Out-Groups
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  • 0:35 Social Group: Dyad
  • 1:10 Social Group: Triad
  • 2:37 Larger Social Groups
  • 3:18 In-Groups and Out-Groups
  • 4:41 Favoritism and Derogation
  • 6:41 Lesson Summary
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Lesson Transcript
Instructor: Erin Long-Crowell
How big are your social groups? How do you decide who to include in those groups? In this lesson, we discuss how group size can affect group dynamics and relationships. We also discuss group membership and differentiate between in-groups and out-groups.

Social Group Sizes

Social groups come in all shapes and sizes. You may have a small family and a close group of friends, but I'm sure you know others who have a large family and a wide group of friends. In a previous lesson, we discussed the distinction between several types of social groups and how the type of group can determine group dynamics and relationships. However, the size of the group also has a significant effect on these aspects of a group.

Social Group: Dyad

The most basic, fundamental type of social group that consists of only two people is called a dyad. The relationship between the two people can be linked through romantic interest, family relation, work, school, and so on. As you likely know from personal experience, these relationships can be emotionally intense but also unstable and sometimes only temporary. In a dyad, both members of the group must cooperate to make it work. If just one fails to cooperate, the group will fall apart.

Social Group: Triad

If you add another person to a dyad, it becomes a triad. A triad is a social group that consists of three people. This seemingly simple addition of just one person significantly affects the group interactions and dynamics. The relationships in a triad can still be fairly intense, but the group is typically more stable than a dyad. If two people in a triad have a dispute, the third member of the group can act as mediator and help reach a compromise. If push comes to shove, one person can leave a triad, and a group would still exist, unlike the one person who would remain after the breaking of a dyad.

Another group characteristic that is strikingly different between dyads and triads is the allocation of responsibility. Imagine you work in an office with only one other person. You bring a sandwich to work and put it in the fridge. Later, when you go to eat your sandwich, half of it is missing. Because there is only one other person in the office, you immediately deduce the culprit. However, if you add just one more person to this scenario, you could not automatically know which of the two office mates ate your sandwich. By changing the dyad to a triad, the lines of responsibility are blurred.

Larger Social Groups

As a group's size increases beyond three members, there are a number of trends that emerge. The intimacy and loyalty of the members decrease as the group grows larger. Because the relationships are less intimate, group members feel less obligation and responsibility. The contribution of each member in a large group is less than it would be in a small group. A larger group is also less likely to reach a consensus because of the plethora of ideas and opinions. On the positive side, large groups do have more stability because the group exists even with the loss of several members.

In-Groups and Out-Groups

Regardless of the size of our groups, we have boundaries and membership criteria that distinguish members from nonmembers. These can be physical boundaries and criteria, such as demographic location or common physical characteristics. They can also be implied boundaries and criteria, such as personality and personal tastes.

All groups, however, tend to maintain the physical or implied boundaries and membership criteria by developing a strong distinction between 'we' and 'they.' The individuals that are included in 'we' form what is known as the in-group. The in-group is any group that one belongs to or identifies with. Likewise, the individuals that are included in 'they' form the out-group, which is any group that one does not belong to or identify with.

For example, imagine you are a member of a soccer team. When thinking of your team members, you would use the term 'we.' ('We are going to win!') Your team is the in-group. When thinking of the team you'll be competing against, you would use the term 'they.' ('They are going to lose!') That team is the out-group.

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