Oddly Wired
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decision making

You are statistically likely to choose the pre-selected option.

A 2003 study of organ donation found that countries with an opt-out policy had nearly 100% participation compared to 15% in opt-in countries.

People rarely exert the effort to change a default setting provided by an institution. We treat the pre-selected choice as a recommendation rather than a random assignment. This inertia dictates everything from software settings to retirement savings.

The choices you make are often just the paths of least resistance.

Where this comes from

Study
Johnson and Goldstein, 2003, Science
What the check found
The cited percentages reflect the range of data presented in the paper for opt-in vs. opt-out countries, though the results are correlational, not causative.
Confidence
Well replicated

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.