In one state the DMV asked drivers to opt-in to indicate the…
In one state the DMV asked drivers to opt-in to indicate their willingness to donate their organs. In a nearby state, the DMV asked participants to opt-out to indicate their unwillingness to donate their organs. Many fewer people in the first state ended up choosing to be organ donors, despite the fact that the states were quite similar in their demographics and political leanings. This is an example of: