Table 4:

Grouped and Paired Pre-Post changes in communication about NL Topics with Members of Social Network. After the module was over students completed an online retrospective pre-post survey to determine whether participation caused them to share more NL information with members of their social network. Communication increased in every case as measured with the Wilcoxon matched pairs signed rank test. Effect size was determined with Hedge’s g (large effect size is >1).

	Retrospective Pre-mean	(SD)	Retrospective Post-mean	(SD)	Effect size (Hedges’ G)	n
(a) Aggregate data	8.3	3.5	14.2***	5.6	1.5	77
Family	1.7	1	2.6***	1.4
Friends	1.5	1	2.4***	1.2
Students in class	1.4	0.8	3.2***	1.6
Students in grade	1.3	0.7	2.3***	1.1
Other adults	1.3	0.7	2.0***	1.3
Other	1.3	0.7	1.8***	1.2

SD, standard deviation;

^***P<0.0001 Wilcoxon matched pairs signed rank test