Table 3.

Results of the nonparametric Wilcoxon ranks test between presenter pre- and postsurveys in Atlanta Neuroscience Expositions

Survey questions	Expositions
	Atlanta I	Atlanta II	Atlanta III
1. Your skills in presenting neuroscience knowledge to these children	Z = −1.85	Z = −2.44	Z = −0.96
	p = 0.065	p = 0.015a	p = 0.338
2. The interest level of these children in neuroscience	Z = −1.73	Z = −0.526	Z = −0.42
	p = 0.083	p = 0.599	p = 0.674
3. The interest level of these children in your presentation	Z = −0.50	Z = −1.20	Z = −0.65
	p = 0.617	p = 0.231	p = 0.518
4. How difficult was it for you to present your project to these children?	Z = −1.60	Z = −0.45	Z = −1.10
	p = 0.109	p = 0.309	p = 0.273
5. How successful do you think your project was?	Z = −2.32	Z = −1.84	Z = −0.28
	p = 0.02a	p = 0.655	p = 0.782
Summed scores of presenters' presentation skills	Z = −2.67	Z = −1.84	Z = −0.573
	p = 0.008a	p = 0.066	p = 0.567
Summed scores of children's interest in neuroscience	Z = −1.66	Z = −0.664	Z = −0.70
	p = 0.096	p = 0.507	p = 0.482

The exact Z value and p value of the Wilcoxon ranks test are displayed.

^a Indicates that the difference reached a significant level (p < 0.05).