Sample size
Preliminary tests were performed to find approximate values for power analysis. Eight undergraduate classmates were asked to test the survey: three of which were in a somewhat stressful environment and five of which were in a relaxed, quiet environment. From the results of this preliminary test, two hypotheses were generated: the null hypothesis, which stated that on average there is no difference in the number of questions answered correctly between the control group and intervention group, and the alternative hypothesis, which stated that on average, the intervention group would answer one fewer question correctly. The alternative hypothesis was developed from the preliminary testing, which showed that those who took the survey in a stressful environment answered 3.67 questions correctly, whereas those who took the survey in a calm environment answered 4.40 questions correctly. The effect size of 0.73 was rounded up to 1 whole question for the alternative hypothesis.A priori power analysis was performed to estimate the sample size [After three days of outdoor data collection, a sufficient sample size for the intervention group (