When we think about social influence, we often imagine a large group influencing one person. A classroom agrees on an answer, a group of friends decides where to go, or a crowd encourages someone to behave in a particular way. This is usually associated with conformity, where people adjust their behaviour or opinions to fit in with a group.
However, social influence does not always work in that direction. Sometimes, a small group of people can influence a much larger group.
A minority can introduce a new idea, challenge an existing belief and eventually persuade other people to change their attitudes. Many ideas that are considered normal today were once held by relatively small groups of people. This process is known as minority influence.
Psychologists are interested in questions such as: Why do people sometimes listen to a minority? What makes a minority persuasive? How can a small group eventually influence an entire society?
One of the most important psychologists associated with minority influence is Serge Moscovici, whose research helped psychologists understand how minorities can influence majority opinion.
What is minority influence?
Minority influence occurs when a smaller group of people influences the attitudes, beliefs or behaviour of a larger group.
The minority may initially hold an opinion that is different from the majority. For example, imagine a school where almost everyone believes that students should have homework every evening.
A small group of students argues that excessive homework reduces their wellbeing and that schools should introduce fewer but more meaningful assignments.
At first, the majority may ignore them. However, if the group continues presenting its arguments, attracts support and persuades more students, the school's attitude might eventually begin to change. The minority has influenced the majority. This is different from majority influence, where a larger group influences an individual or smaller group.
Why is minority influence important?
Minority influence helps explain how social change can occur. If everyone always followed the majority, new ideas would have difficulty becoming accepted.
Scientific theories, political movements, social campaigns, changes in attitudes and cultural developments can all involve people challenging existing beliefs.
A minority does not necessarily have to be correct simply because it challenges the majority. However, minority influence demonstrates that being in the minority does not mean having no influence. A small group can sometimes cause people to reconsider ideas they previously accepted.
Moscovici's research into minority influence
One of the most important studies of minority influence was conducted by Serge Moscovici and his colleagues in 1969. The study investigated whether a consistent minority could influence the majority.
Participants were placed into groups and shown a series of coloured slides. The slides were different shades of blue, although the researchers varied the intensity of the colours.
Participants were asked to identify the colour of each slide. The important part of the experiment was that some participants were confederates (people working with the researchers) who deliberately gave incorrect answers.
The minority consistently claimed that the slides were green. The researchers were interested in whether the actual participants would be influenced by the minority's answers.
What did Moscovici find?
Moscovici found evidence that a consistent minority could influence the majority. When the minority consistently gave the same incorrect answer, some participants changed their responses and agreed that the slides were green.
The effect was not enormous. Most participants did not simply abandon their own perception and agree with the minority every time. However, the important finding was that the minority did have an influence.
This demonstrated that social influence does not only move from the majority to the minority. A consistent minority can make people question their own position.
Consistency is key
One of the most important concepts in minority influence is consistency. A minority is more likely to influence others when its members consistently express the same position.
Imagine a group campaigning for changes to school uniform rules.
On Monday, they argue that uniforms should be removed.
On Tuesday, they say uniforms should be made more flexible.
On Wednesday, they say uniforms are actually useful.
Their inconsistent position may make it difficult for others to take their argument seriously.
Now imagine the group consistently argues:
“Students should have more freedom to choose appropriate school clothing.”
They present the same central argument over time, even while responding to different questions. The consistency may make the majority more likely to pay attention.
Moscovici therefore argued that consistency is an important factor in minority influence.
Consistency can create conflict
Why might consistency be so powerful?
When someone repeatedly expresses an opinion that differs from our own, we may experience a form of psychological conflict.
We might begin asking:
“Why are they so certain?”
“Could they have a point?”
“Am I wrong?”
This can cause people to examine their own beliefs more carefully. A consistent minority therefore has the potential to create cognitive conflict within members of the majority.
Even if the majority does not immediately agree with the minority, the minority's ideas may remain in their minds. This can contribute to gradual attitude change.
Commitment
Another factor that can make minority influence more effective is commitment. Commitment means demonstrating that the minority genuinely believes in its position and is prepared to continue supporting it despite opposition.
A minority that gives up immediately may not appear particularly convincing. A minority that continues to campaign despite criticism may demonstrate that its members genuinely believe in the cause. This can make the majority take the minority more seriously.
In social movements, commitment can sometimes be demonstrated through considerable personal effort, time or sacrifice. However, commitment does not mean that people should engage in harmful or illegal behaviour.
From a psychological perspective, the important point is that commitment can communicate the seriousness of a belief.
The role of flexibility
Consistency is important, but being completely rigid may not always be effective. A minority that refuses to consider any alternative perspective may appear unreasonable. This is why psychologists have also identified flexibility as an important factor.
A successful minority may remain consistent about its central principle while being willing to discuss how that principle should be applied.
For example, a group might consistently argue for improved environmental policies but be willing to negotiate over exactly how those policies should be introduced.
This combination can make the minority appear both committed and reasonable.
The minority therefore needs to avoid two extremes:
Too inconsistent: People may not know what the minority actually believes.
Too rigid: People may dismiss the minority as unreasonable.
A degree of flexibility can make minority influence more effective.
The snowball effect
One of the most important ideas associated with minority influence is the snowball effect.
A minority may initially have very little support. However, if some people begin accepting its ideas, those people can influence others.
The minority gradually becomes larger. Eventually, an idea that was once held by only a small group can become widely accepted.
This can be represented as: Minority → a few converts → increasing support → wider acceptance → social change
This is sometimes called the snowball effect because the influence can gradually grow.
From minority to majority
Imagine that ten years ago only a small number of people believed that a particular social policy should change.They repeatedly campaign, provide evidence and explain their position.
At first, most people disagree. Over time, some members of the majority become persuaded. Those people discuss the idea with their friends and more people become aware of the argument.
Eventually, the original minority may become much larger. The idea that once seemed unusual may eventually become accepted by a substantial proportion of society. This illustrates how minority influence can contribute to social change.
Social cryptoamnesia
Another interesting concept associated with minority influence is social cryptoamnesia. This refers to a situation where people accept an idea but forget where the idea originally came from.
For example, a social movement may spend years campaigning for a particular change. Eventually, the change becomes widely accepted. People who support the idea years later may not remember that it was originally promoted by a relatively small minority.
The influence of the original minority remains, even though its contribution may no longer be recognised. This demonstrates that minority influence can have long-term effects.
Minority influence and social change
Minority influence is particularly important when studying social change. Social change occurs when attitudes, beliefs, behaviours or social structures change over time.
A minority can contribute to social change by challenging established ideas. This might involve campaigns relating to: environmental issues, education, equality, public health, workplace practices, animal welfare, technology and social attitudes.
However, it is important to remember that social change is usually complex. A minority campaign is rarely the only factor involved. Political decisions, economic conditions, technological developments, media coverage, scientific evidence and changes in public opinion can all contribute.
Minority influence is one possible mechanism through which attitudes can change.
How does a minority gain attention?
A minority needs to get its message noticed. One way of doing this is through persuasive communication.
The minority may present arguments, evidence and examples designed to make people reconsider their existing beliefs.
Social media has also changed the way minority influence can operate.In the past, a small group might have needed newspapers, public demonstrations or meetings to reach large numbers of people.
Today, a small group can potentially communicate with thousands or millions of people online. This does not guarantee influence, but it can make it easier for minority ideas to spread.
Majority influence versus minority influence
It is useful to compare the two.
Majority influence
A majority can influence people because individuals may want to fit in with the group.
People may conform because they want social acceptance or because they believe the majority has more accurate information.
Minority influence
A minority usually does not have numerical power. Instead, it may influence others through factors such as: consistency, commitment, flexibility, persuasive arguments, confidence and willingness to challenge existing beliefs.
The two forms of influence therefore operate in different ways.
Internalisation and minority influence
Minority influence can sometimes result in internalisation. Internalisation occurs when a person genuinely accepts an attitude or belief as their own.
This is different from simply pretending to agree publicly. Imagine a student initially disagrees with a minority campaign. After hearing its arguments repeatedly and considering the evidence, the student changes their personal opinion.
Even when the minority members are no longer present, the student continues to hold the new belief. That would represent internalisation. This is particularly important because minority influence can involve deeper attitude change rather than simply public compliance.
Why might people resist minority influence?
Minority influence does not always work. People may resist a minority because they strongly identify with the majority. They may distrust the minority or believe that the majority has better information. They may also have strong existing beliefs that are difficult to change.
Social identity can therefore influence whether someone is willing to consider a minority position. If accepting the minority's opinion threatens someone's sense of identity or belonging, resistance may be particularly strong.
Evaluating Moscovici's research
Moscovici's research was important because it challenged the idea that social influence mainly operates from large groups to individuals. His findings showed that a consistent minority could influence majority responses.
The laboratory setting also allowed researchers to control important variables. However, there were limitations. The colour-judgement task used in the experiment was relatively artificial.
Deciding whether a slide was blue or green is very different from changing someone's deeply held political, religious or moral beliefs. Participants may also have behaved differently because they knew they were taking part in an experiment.
Therefore, it may be difficult to generalise the findings from a simple laboratory task to complex real-world social movements.
Consistency: strength and limitation
The emphasis on consistency is useful because it provides a clear explanation for why some minorities may be more persuasive.
A consistent message can demonstrate confidence and commitment. However, consistency alone cannot explain every example of successful minority influence.
A minority may be consistent but still fail to persuade anyone. The credibility of its arguments, the social context, the size of the minority and the existing attitudes of the majority can all matter. Therefore, minority influence is likely to depend on several interacting factors.
A GCSE exam-style question
A question might ask:
“Explain two factors that can make minority influence more effective.”
A strong answer could identify consistency and commitment and explain how each contributes to influence.
For example:
One factor is consistency. A minority is more likely to influence the majority if its members repeatedly express the same position. This may create uncertainty or conflict within members of the majority and encourage them to reconsider their own views. Another factor is commitment. If minority members demonstrate that they genuinely believe in their position and are willing to continue supporting it despite opposition, the majority may take their views more seriously.
Notice that the answer does not simply list the factors.
It explains how each factor could produce influence.
Final thought
Minority influence demonstrates that social influence is not always about following the crowd.
Sometimes change begins with a small number of people who are willing to challenge an established belief.
Moscovici's research showed that a consistent minority can influence majority responses, while concepts such as commitment, flexibility and the snowball effect help explain how minority influence can develop over time.
A minority may begin with very little support. However, if its ideas attract a few people, those people can influence others. Gradually, the original minority can become larger and its ideas can become more widely accepted.
This helps explain an important feature of human society: the majority's opinion is not necessarily permanent.
The beliefs that seem obvious today may once have been challenged by relatively small groups of people.
For GCSE Psychology, the key lesson is therefore simple:
Social influence does not only flow from the majority to the minority. Sometimes, the minority changes the majority.