Sample size (or number of clusters) by treatment arms
The probability that the first opponent is a landlord is 0.5. The probability that the first opponent is a tenant is 0.5.
Therefore in the Memphis sample:
- In altruism game, first opponent is tenant: ~250 individuals
- In altruism game, first opponent is landlord: ~250 individuals
Whereas in the general population sample:
- In altruism game, first opponent is tenant: ~500 individuals
- In altruism game, first opponent is landlord: ~500 individuals
Numbers are approximate because randomization occurs at the beginning of the altruism task, and some participants will not complete the survey.
Similarly, across each altruism elicitation, the choice of the even split of the gift card is observed first in the multiple price list with probability = 0.5. For instance, in the game in which the opponent is a tenant, the participant observes an even split of the gift card first in the multiple price list with probability = 0.5; similarly, in the game in which the opponent is a landlord, the participant observes an even split of the gift card first in the multiple price list with probability = 0.5. This will yield identical approximate sample sizes as above, for each of these sub-treatments.