If EAs are reporting actual numbers they’ve looked up and non-EAs are reporting their vague estimates of how much they might have given, I would expect non-EAs’ figures to be worse overestimates than EAs’.
As Caplan would say, social desirability bias seems like an issue here. One would not expect people to penalize themselves in such a self-report rather than nudge estimates upwards and make themselves look better in their own mind.
If EAs are reporting actual numbers they’ve looked up and non-EAs are reporting their vague estimates of how much they might have given, I would expect non-EAs’ figures to be worse overestimates than EAs’.
As Caplan would say, social desirability bias seems like an issue here. One would not expect people to penalize themselves in such a self-report rather than nudge estimates upwards and make themselves look better in their own mind.