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IV. Activities
An outreach letter to farmers, designed to promote awareness of a loan pro-
gram, produced a 22 percent increase in the proportion of farmers who ultimately
obtained loans.
A new signature box on an online form, requiring vendors to confirm the
accuracy of self-reported sales, produced an additional $1.59 million in fees
collected by the government in just one quarter, apparently because the box
increased honest reporting.
Notwithstanding the success stories, official use of behavioral science raises
two legitimate concerns.
For example, behavioral scientists have found that the default rule, establish-
ing what happens if people do nothing, has surprisingly big effects.
If employersautomatically enrollnew employees in savings programs, they
can produce significant increases in participation—inone study, an increase
of more than 30 percentage points. And more controversially, if utility compa-
niesautomatically enrolledpeople in green energy, there would inevitably be
reductions in greenhouse gas emissions, even with the right to opt out.
The best safeguard against manipulation is accountability. Official uses of
behavioral science should never be hidden, and they should always be undertaken
within the limits of law and for legitimate ends, such as promoting retirement
security, lowering barriers to college, increasing employment and saving taxpayers
money.
If the law requires people to obtain licenses or permits, to pay taxes, or to
apply for benefits or training, the government must select some method of com-
munication. Public officials need to experiment if they want to know the effects