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Cognitive Biases

Pluralistic Ignorance

Pluralistic ignorance occurs when individuals collectively misperceive what others think, leading them to support practices they personally dislike. A nudge that reveals true opinions can trigger large-scale social change.

THE IDEA

Pluralistic Ignorance

For those who want to enlist social influences, an important challenge, as well as a real opportunity, is pluralistic ignorance—that is, ignorance, on the part of all or most, about what other people think. We may follow a practice or a tradition not because we like it or even think it defensible, but merely because we think that most other people like it. Many social practices persist for this reason, which means a small shock, or nudge, can dislodge them.21 A dramatic example is Communism in the former Soviet bloc, which lasted in part because people were unaware of how large a share of the population despised the regime. As people became aware of what others actually thought, they were emboldened to say what they believed, and to act accordingly.

There is a clue here to understanding how large-scale social change comes about. Often people are authorized or nudged to speak and act in accordance with their actual views. Think of the wonderful Hans Christian Andersen story “The Emperor’s New Clothes.” The nudge is emphatically social; it often turns out to be a kind of permission slip. If a child says out loud that the emperor is naked, the people in a crowd might suddenly feel licensed to say so too. Dramatic changes, rejecting long-standing practices, are often produced by a nudge that starts a kind of cascade or bandwagon effect, because it gives people a sense of what others actually think, and thus authorizes them to say what they actually think too. Consider, for example, the rise of gay marriage, #MeToo, and #BlackLivesMatter. All of these movements were fueled by visible actions, including vigorous social media campaigns, that permitted or encouraged people to reveal long-silenced anger and outrage. People who had shut themselves up, or suffered or grieved or raged in silence, suddenly saw a kind of green light.

A vivid example comes from an experiment in Saudi Arabia. The study describes a setting governed by “guardianship,” in which husbands had the final word on whether their wives worked outside the home. Asking a large group of young married men in private whether they are in favor of female labor force participation, economist Leonardo Bursztyn and his colleagues learned that the overwhelming majority answer yes.22 At the same time, they found that those men are profoundly mistaken about the social norm; they wrongly think that other, similar men, even those in their local community, do not want their wives to join the labor force.

Bursztyn and his colleagues randomly corrected the beliefs of half of those young men about what other young men believed. As a result, they became far more willing to authorize their wives to work (recall the custom of guardianship)—and there was a significant impact on what women actually did. Four months after the intervention, the wives of men in the experiment who had received the information about others’ beliefs were more likely to have applied and interviewed for a job. Here’s the broader lesson: if people wrongly think that most people are committed to a long-standing social norm, a small nudge correcting that misperception can inaugurate large-scale change.

When to use it

  • Identifying why inefficient or unpopular practices persist in organizations despite widespread private dissatisfaction.

  • Designing public health campaigns that correct misperceptions about social norms (e.g., smoking, vaccination).

  • Understanding the dynamics of political revolutions and social movements where hidden grievances surface.

  • Improving workplace diversity by revealing hidden support for inclusive policies among employees.

FROM THEORY TO EVERYDAY LIFE

In practice

01

Communism in the Soviet Bloc

Communism in the former Soviet bloc persisted in part because people were unaware of how large a share of the population despised the regime. When people became aware of others' actual views, they were emboldened to speak and act accordingly, contributing to the regime's collapse.

02

The Emperor's New Clothes

In the Hans Christian Andersen story, a child's exclamation that the emperor is naked authorizes others to voice what they already believed but were afraid to say, illustrating how a small nudge can reveal pluralistic ignorance.

03

Saudi Arabia Female Labor Force Experiment

Economist Leonardo Bursztyn and colleagues found that young married men in Saudi Arabia privately favored female labor force participation but mistakenly thought other men opposed it. Correcting this misperception made them more willing to allow their wives to work, leading to real job applications and interviews.

✳

A MOMENT TO REFLECT

Put it to work.

  1. Think of a social norm you follow but privately disagree with. How might pluralistic ignorance be at play in this situation?

  2. How can leaders in an organization use small nudges to reveal the true opinions of team members?

  3. What current social movements might be driven by correcting misperceptions about public opinion?

Connected ideas

Another lens can bring the same problem into focus.

References

  1. Experiment on Guardianship and Female Labor Force Participation — Leonardo Bursztyn et al.

CONTINUE THE CONVERSATION

Source texts

  • Nudge The Final Edition (Richard H. Thaler Cass R. Sunstein)
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