Sample size (or number of clusters) by treatment arms
Number of households approached for each treatment group:
$1, No Social Norm, No Warning: 480
$1, No Social Norm, Warning: 474
$1, No Social Norm, Opt-Out: 473
$1, Low Social Norm, No Warning: 447
$1, Low Social Norm, Warning: 508
$1, Low Social Norm, Opt-Out: 535
$1, High Social Norm, No Warning: 454
$1, High Social Norm, Warning: 469
$1, High Social Norm, Opt-Out: 481
$5, No Social Norm, No Warning: 435
$5, No Social Norm, Warning: 546
$5, No Social Norm, Opt-Out: 501
$5, Low Social Norm, No Warning: 493
$5, Low Social Norm, Warning: 544
$5, Low Social Norm, Opt-Out: 491
$5, High Social Norm, No Warning: 431
$5, High Social Norm, Warning: 511
$5, High Social Norm, Opt-Out: 542