TABLE 4.

Testing Pre- and Posttest Differences for Questions 1–4.

QuestionPretest mean (SD)Posttest mean (SD)tdfp
1 (define interdisciplinary)2.02 (0.97)2.64 (0.84)−4.0363<0.001
2 (interdisciplinary approaches to environment)2.36 (0.86)2.63 (0.85)−1.90630.06
3 (your major and climate change)2.39 (1.00)2.98 (0.78)−4.2461<0.001
4 (describe eutrophication)1.52 (0.71)3.20 (0.84)−12.0063<0.001