Results were analyzed as matched-pair means (t-tests) for each of the 33 survey questions. For each pre-post difference, we also report P-values and Cohen’s measure of practical significance for descriptive purposes. However, in order to control for overall experimental type-I error (because we conducted 33 comparisons), we also indicate which findings are significant if we set the experimental error rate at alpha = .05, using a sequential Holm procedure, so that the largest effect was tested at .05/33 (directional, 1-tailed test), the next effect was tested at .05/32, and so on. Once one test fails to reach significance, testing stops and the remaining contrasts are non-significant.