Social Proof - Social Norms

4 important questions on Social Proof - Social Norms

Explain the injunctive and the descriptive norm of a littered environment.

The injunctive norm = what is perceived as socially acceptable or unacceptable behavior in a given situation.
  • In the case of a littered environment, the injunctive norm would be that littering is unacceptable.

The descriptive norm = what is commonly observed or experienced in a specific context.
  • In the context of a littered environment, the descriptive norm would be that littering is a common behavior that is frequently observed.
  • The injunctive norm is weakened, because in a littered environment people are more likely to litter, which makes it acceptable.


intervention: clean the streets.

What is the effect of litter on the street?

The higher the number of litter on the street, the more likely others will litter too. However, 1 piece of litter highlights that there is no litter in the environment and thus the majority of people does not litter. Because of the social norms you won't litter either.

What is the difference between social proof and social norms?

Social proof refers to the psychological phenomenon where people rely on the actions or opinions of others to determine their own behavior. It is the idea that if a lot of people are doing or believing something, it must be the right thing to do or believe.
Social norms are the unwritten rules or expectations that guide behavior in a particular society or group. They are the accepted standards of behavior that reflect what is considered normal or appropriate.
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How can you reduce littering in a littered environment?

By making the injunctive norm salient (noticeable). In a littered environment, the injunctive norm is not visible (salient) and therefore de descriptive norm is more salient, which makes people care less about littering themselves. By sweeping the litter on a pile or letting someone clean the litter, the injunctive norm becomes more salient, which will help decrease people littering the environment.

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