Measuring Public Information Campaigns
Many public information campaigns rely on social norms, but the behavioural impact of these advertisements are not always tested. This sometimes means that we don’t know if the messages are having a positive result. It might also lead to unintended outcomes.
Social science can ensure messages are effective. We can target the most relevant social norm to the desired behaviour, and then measure behavioural change.
An environmental study shows that injunctive norms can stop people from doing the wrong thing, but only when the bad behaviour is described negatively. In this case, telling visitors “don’t take the wood” reduced stealing from a national park. Telling visitors that many people have stolen wood in the past and caused damage to the park led to more theft. This made it seem as if stealing was normal
This study shows it’s important to test communications. Reminding people about what is commonplace can backfire, even when the behaviour is bad. If everyone else is stealing, why shouldn’t I?
A health study shows that injunctive norms impact binge drinking. Young people who personally approve of excessive drinking, and who believe their friends and parents would approve, are more likely to drink heavily. They were not influenced by other students or others of the same gender.
This study shows that understanding the most influential people of specific groups requires testing. Many advertisements target parents as role models, and same-age peers, but the focus of these campaigns may not always be persuasive if the individual believes those closest to them are supportive of their behaviour.
Social science can help advertisers, policy-makers, and businesses to choose the correct social norm, and track behaviour change, using scientific theories and methods.
Read more on Social Science Insights.














