Fig. 2From: Comparing the effects of dynamic computer visualization on undergraduate students’ understanding of osmosis with randomized posttest-only control group designThe Wright map of person-item measure of osmosis assessment. Each “#” symbol means a subgroup of five people and a “.” represents less than 5. “M” is the mean, “S” is one standard deviation from the mean, and “T” is two standard deviations from the meanBack to article page