But that example is probabilities. Here’s how I would redesign the experiment to make the subjects think in frequencies:
Generate a random integer from 0 to the number of countries in the world
Ask subjects whether this number is higher or lower than the number in Africa
Ask subjects to estimate the number of nations that are in Africa
sub treatments: either tell subjects the total number of nations in the world or don’t.
But that example is probabilities. Here’s how I would redesign the experiment to make the subjects think in frequencies:
Generate a random integer from 0 to the number of countries in the world
Ask subjects whether this number is higher or lower than the number in Africa
Ask subjects to estimate the number of nations that are in Africa
sub treatments: either tell subjects the total number of nations in the world or don’t.