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Field
Sample size (or number of clusters) by treatment arms
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Before
500 for non-lender-aligned, 500 for lender-aligned for main arm. Same numbers for a variant of the main arm where race-gender descriptors for borrowers are replaced by odd/even number birth-day/month.
250 for non-lender-aligned, 250 for lender-aligned for an arm similar to main arm except that participants also have a choice to see the predicted default risk generated by AI or not. Same numbers for a variant of the main arm where race-gender descriptors for borrowers are replaced by odd/even number birth-day/month.
3000 in total.
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After
Evenly for non-lender-aligned and for lender-aligned for main arm. Same shares for a variant of the main arm where race-gender descriptors for borrowers are replaced by odd/even number birth-day/month. Main arm, in particular active choice of whether to see explanation will be 3X sampled relative to other arms in this group.
1/3 as much as above, but within this even between non-lender-aligned and lender-aligned for an arm similar to main arm except that participants also have a choice to see the predicted default risk generated by AI or not. Same numbers for a variant of the main arm where race-gender descriptors for borrowers are replaced by odd/even number birth-day/month.
3000 in total.
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