600 scientists oppose UK’s use of behavioral science to fight coronavirus

The UK government’s handling of the novel coronavirus pandemic has come under serious criticism, not just from citizens, but from leaders around the world. One of the reasons for this is because the government is using behavioral science to decide how to coordinate its response to the pandemic.

In fact, more than 600 academics recently signed an open letter “expressing concern” about the UK government’s use of behavioral science in response to the novel coronavirus pandemic. This letter did not reject the use of behavioral science as part of the response, but simply called for the government to release the behavioral evidence it was using to determine policy.

According to the principles of behavioral science, people don’t act rationally. But if we can understand people’s actions, and how they act irrationally, then we can intervene to change behavior. Such interventions are typically called “nudges”. These can be powerful tools for influencing how people behave but with the added benefit of allowing them to make their own choices. Nudges usually offer positive reinforcement or indirect suggestions that aim to influence decision making and behavior in people.

Some example nudges in response to the novel coronavirus include singing happy birthday while washing your hands or using funny alternative “handshakes”. These strategies emphasize the need for good hygiene, and create memorable rules of thumb which encourage people to participate.

If the promises of behavioral science can be believed, the UK government’s use of it would potentially minimize economic disruption while still tackling the crisis. This is because, in theory, behavioral science can achieve desirable behaviors without significantly impacting other day-to-day activities. However, the question is whether in practice behavioral science to help mitigate disaster.


Behavioral science came into prominence in the UK during the 2010-2015 Conservative-Liberal Democrat coalition government, which set up its own behavioral science advisory group called the Behavioral Insights Team (BIT) – sometimes known as the the Nudge Unit.

The establishment of BIT happened after the publication of Nudge, written by Richard Thaler (who would go on to win the 2017 Nobel Prize in Economics) and and Cass Sunstein (who would later serve in the Obama Administration as a “regulation Tsar”).

Nudge argued that behavioral economics research could be used to transform public policy. Nudges would be cheap, effective, and minimally disruptive. These arguments won support from several governments, and nudges have subsequently been used to encourage organ donation, retirement saving, and reduced plastic bag usage.

Nudges, and the behavioral science which inspired them, face a lot of criticism, even when they’re not being used to tackle a global pandemic. But it’s also unfair to say it’s not sometimes effective. For instance, in 2015 UK workplace pensions changed from being opt-in to opt-out. This “nudged” over 9 million UK employees to begin saving for their retirement, according to a 2017 report.

Using some behavioral science to help tackle the coronavirus pandemic may make sense, as Thaler has recently argued. For instance, Danish supermarkets have started using floor signs at check-outs to encourage customers to maintain a safe distance while purchasing groceries. But what has many experts worried is the government’s reliance on the idea of “behavioral fatigue”.