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Chapter 5: Groups and Organizations

5.2 Group Dynamics and Behavior

Social scientists have studied how people behave in groups and how groups affect people’s behavior, attitudes, and perceptions (Gastil, 2009). Their research underscores the importance of groups for social life, but it also points to the dangerous influence groups can sometimes have on their members.

The Importance of Group Size

The distinction made earlier between small primary groups and larger secondary groups reflects the importance of group size for the functioning of a group, the nature of its members’ attachments, and the group’s stability. If you have ever taken a very small class, say fewer than 15 students, you probably noticed that the class atmosphere differed markedly from that of a large lecture class you may have been in. In the small class, you were able to know the professor better, and the students in the room were able to know each other better. Attendance in the small class was probably more regular than in the large lecture class.

Over the years, sociologists and other scholars have studied the effects of group size on group dynamics. One of the first to do so was German sociologist Georg Simmel (1858–1918), who discussed the effects of groups of different sizes. The smallest group, of course, is the two-person group, or , such as a married couple or two people engaged to be married or at least dating steadily. In this smallest of groups, Simmel noted, relationships can be very intense emotionally (as you might know from personal experience) but also very unstable and short lived: if one person ends the relationship, the dyad ends as well.


The smallest group is the two-person group, or dyad.  Dyad relationships can be very intense emotionally but also unstable and short lived. Why is this so? Photo by Zun Zun from Pexels

A , or three-person group, involves relationships that are still fairly intense, but it is also more stable than a dyad. A major reason for this, said Simmel, is that if two people in a triad have a dispute, the third member can help them reach some compromise that will satisfy all the triad members. The downside of a triad is that two of its members may become very close and increasingly disregard the third member, reflecting the old saying that “three’s a crowd.” As one example, some overcrowded college dorms are forced to house students in triples, or three to a room. In such a situation, suppose that two of the roommates are night owls and like to stay up very late, while the third wants lights out by 11:00 p.m. If majority rules, as well it might, the third roommate will feel very dissatisfied and may decide to try to find other roommates.

As groups become larger, the intensity of their interaction and bonding decreases, but their stability increases. The major reason for this is the sheer number of relationships that can exist in a larger group. For example, in a dyad only one relationship exists, that between the two members of the dyad. In a triad (say composed of members A, B, and C), three relationships exist: A-B, A-C, and B-C. In a four-person group, the number of relationships rises to six: A-B, A-C, A-D, B-C, B-D, and C-D. In a five-person group, 10 relationships exist, and in a seven-person group, 21 exist (see Figure 5.2 “Number of Two-Person Relationships in Groups of Different Sizes”). As the number of possible relationships rises, the amount of time a group member can spend with any other group member must decline, and with this decline comes less intense interaction and weaker emotional bonds. But as group size increases, the group also becomes more stable because it is large enough to survive any one member’s departure from the group. When you graduate from your college or university, any clubs, organizations, or sports teams to which you belong will continue despite your exit, no matter how important you were to the group, as the remaining members of the group and new recruits will carry on in your absence.

Figure 6.2 Number of Two-Person Relationships in Groups of Different Sizes


Group Leadership and Decision Making

Most groups have leaders. In the family, of course, the parents are the leaders, as much as their children sometimes might not like that. Even some close friendship groups have a leader or two who emerge over time. Virtually all secondary groups have leaders. These groups often have a charter, operations manual, or similar document that stipulates how leaders are appointed or elected and what their duties are.

Groups, Roles, and Conformity

We have seen in this and previous chapters that groups are essential for social life, in large part because they play an important part in the socialization process and provide emotional and other support for their members. As sociologists have emphasized since the origins of the discipline during the 19th century, the influence of groups on individuals is essential for social stability. This influence operates through many mechanisms, including the roles that group members are expected to play. Secondary groups such as business organizations are also fundamental to complex industrial societies such as our own.

Social stability results because groups induce their members to conform to the norms, values, and attitudes of the groups themselves and of the larger society to which they belong. As the chapter-opening news story about teenage vandalism reminds us, however, conformity to the group, or peer pressure, has a downside if it means that people might adopt group norms, attitudes, or values that are bad for some reason to hold and may even result in harm to others. Conformity is thus a double-edged sword. Unfortunately, bad conformity happens all too often, as several social-psychological experiments, to which we now turn, remind us.

Solomon Asch and Perceptions of Line Lengths

Several decades ago Solomon Asch (1958) conducted one of the first of these experiments. Consider the pair of cards in Figure 5.3 “Examples of Cards Used in Asch’s Experiment”. One of the lines (A, B, or C) on the right card is identical in length to the single line in the left card. Which is it? If your vision is up to par, you undoubtedly answered Line B. Asch showed several students pairs of cards similar to the pair in Figure 5.3 “Examples of Cards Used in Asch’s Experiment” to confirm that it was very clear which of the three lines was the same length as the single line.

Next, he had students meet in groups of at least six members and told them he was testing their visual ability. One by one he asked each member of the group to identify which of the three lines was the same length as the single line. One by one each student gave a wrong answer. Finally, the last student had to answer, and about one-third of the time the final student in each group also gave the wrong answer that everyone else was giving.

Figure 5.3 Examples of Cards Used in Asch’s Experiment


Unknown to these final students, all the other students were confederates or accomplices, to use some experimental jargon, as Asch had told them to give a wrong answer on purpose. The final student in each group was thus a naive subject, and Asch’s purpose was to see how often the naive subjects in all the groups would give the wrong answer that everyone else was giving, even though it was very clear it was a wrong answer.

After each group ended its deliberations, Asch asked the naive subjects who gave the wrong answers why they did so. Some replied that they knew the answer was wrong but they did not want to look different from the other people in the group, even though they were strangers before the experiment began. But other naive subjects said they had begun to doubt their own visual perception: they decided that if everyone else was giving a different answer, then somehow they were seeing the cards incorrectly.

Asch’s experiment indicated that groups induce conformity for at least two reasons. First, members feel pressured to conform so as not to alienate other members. Second, members may decide their own perceptions or views are wrong because they see other group members perceiving things differently and begin to doubt their own perceptive abilities. For either or both reasons, then, groups can, for better or worse, affect our judgments and our actions.

Stanley Milgram and Electric Shock

Although the type of influence Asch’s experiment involved was benign, other experiments indicate that individuals can conform in a very harmful way. One such very famous experiment was conducted by Yale University psychologist Stanley Milgram (1974), who designed it to address an important question that arose after World War II and the revelation of the murders of millions of people during the Nazi Holocaust. This question was, “How was the Holocaust possible?” Many people blamed the authoritarian nature of German culture and the so-called authoritarian personality that it inspired among German residents, who, it was thought, would be quite ready to obey rules and demands from authority figures.

Milgram wanted to see whether Germans would indeed be more likely than Americans to obey unjust authority. He devised a series of experiments and found that his American subjects were quite likely to give potentially lethal electric shocks to other people. During the experiment, a subject, or “teacher,” would come into a laboratory and be told by a man wearing a white lab coat to sit down at a table housing a machine that sent electric shocks to a “learner.” Depending on the type of experiment, this was either a person whom the teacher never saw and heard only over a loudspeaker, a person sitting in an adjoining room whom the teacher could see through a window and hear over the loudspeaker, or a person sitting right next to the teacher.

The teacher was then told to read the learner a list of word pairs, such as mother-father, cat-dog, and sun-moon. At the end of the list, the teacher was then asked to read the first word of the first word pair—for example, “mother” in our list—and to read several possible matches. If the learner got the right answer (“father”), the teacher would move on to the next word pair, but if the learner gave the wrong answer, the teacher was to administer an electric shock to the learner. The initial shock was 15 volts (V), and each time a wrong answer was given, the shock would be increased, finally going up to 450 V, which was marked on the machine as “Danger: Severe Shock.” The learners often gave wrong answers and would cry out in pain as the voltage increased. In the 200-V range, they would scream, and in the 400-V range, they would say nothing at all. As far as the teachers knew, the learners had lapsed into unconsciousness from the electric shocks and even died. In reality, the learners were not actually being shocked. Instead, the voice and screams heard through the loudspeaker were from a tape recorder, and the learners that some teachers saw were only pretending to be in agony.

Before his study began, Milgram consulted several psychologists, who assured him that no sane person would be willing to administer lethal shock in his experiments. He thus was shocked (pun intended) to find that more than half the teachers went all the way to 450 V in the experiments, where they could only hear the learner over a loudspeaker and not see him. Even in the experiments where the learner was sitting next to the teacher, some teachers still went to 450 V by forcing a hand of the screaming, resisting, but tied-down learner onto a metal plate that completed the electric circuit.

Milgram concluded that people are quite willing, however reluctantly, to obey authority even if it means inflicting great harm on others. If that could happen in his artificial experiment situation, he thought, then perhaps the Holocaust was not so incomprehensible after all, and it would be too simplistic to blame the Holocaust just on the authoritarianism of German culture. Instead, perhaps its roots lay in the very conformity to roles and group norms that makes society possible in the first place. The same processes that make society possible may also make tragedies like the Holocaust possible.


As these examples suggest, sometimes people go along with the desires and views f a group against their better judgments, either because they do not want to appear different or because they have come to believe that the group’s course of action may be the best one after all. Psychologist Irving Janis (1972) called this process and noted it has often affected national and foreign policy decisions in the United States and elsewhere. Group members often quickly agree on some course of action without thinking completely of alternatives. A well-known example here was the decision by President John F. Kennedy and his advisers in 1961 to aid the invasion of the Bay of Pigs in Cuba by Cuban exiles who hoped to overthrow the government of Fidel Castro. Although several advisers thought the plan ill advised, they kept quiet, and the invasion was an embarrassing failure (Hart, Stern, & Sundelius, 1997).


Groupthink may prompt people to conform with the judgments or behavior of a group because they do not want to appear different. While we value fair and impartial trials, is justice truly blind? Because of pressures to reach a quick verdict, jurors may go along with the majority opinion even if they disagree. Image by Sang Hyun Cho from Pixabay.

Groupthink is also seen in jury decision-making. Because of the pressures to reach a verdict quickly, some jurors may go along with a verdict even if they believe otherwise. In juries and other small groups, groupthink is less likely to occur if at least one person expresses a dissenting view. Once that happens, other dissenters feel more comfortable voicing their own objections (Gastil, 2009).

Diffusion of Responsibility

Similar to groupthink, the , also known as the bystander effect, is an observable social pattern where people are less likely to act if they think others will. This pattern of behavior reflects the trend of conforming to the group. Imagine someone in the middle of busy sidewalk in New York City, crying loudly. How many people do you think would stop to ask if this person was okay? Now imagine the same individual, crying on the sidewalk of a smaller community. Would people be more likely to offer help? Psychologists have found that people are less likely to act especially in larger groups (Latané and Darley, 1968). It is believed that people do not believe that the responsibility to act rests on them if there are others who can act.

Michel’s Iron Law of Oligarchy

Several decades ago Robert Michels (1876–1936), a German activist and scholar, published his famous , by which he meant that large organizations inevitably develop an oligarchy, or the undemocratic rule of many people by just a few people (Michels, 1911/1949). He said this happens as leaders increasingly monopolize knowledge because they have more access than do other organizational members to information and technology. They begin to think they are better suited than other people to lead their organizations, and they also do their best to stay in their positions of power, which they find very appealing. This latter goal becomes more important than helping the organization achieve its objectives and than serving the interests of the workers further down the organizational pyramid. Drawing on our earlier discussion of group size, it is also true that as an organization becomes larger, it becomes very difficult to continue to involve all group members in decision making, which almost inevitably becomes monopolized by the relatively few people at the top of the organization. Michels thought oligarchization happens not only in bureaucracies but also in a society’s political structures and said that the inevitable tendency to oligarchy threatens democracy by concentrating political decision-making power in the hands of a few.


Key Terms

Diffusion of Responsibility – a behavior pattern where people are less likely to act if they think others will.

Dyad – a two-person group.

Groupthink: A behavior pattern when people go along with the desires and views of a group against their better judgments.

Iron Law of Oligarchy – the theory that large organizations inevitably develop an oligarchy, or the undemocratic rule of many people by just a few people

Triad – a three-person group.


Continue to 5.3 End-of-Chapter Material


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Exploring Our Social World: The Story of Us by Jean Ramirez, Rudy Hernandez, Aliza Robison, Pamela Smith, and Willie Davis is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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