Fig 4. Plot of participant reported pore areas (A) and reported porosity (B) before and after training.

Grey symbols are the individual responses while diamonds are mean with standard deviation (10 ≤ n ≤ 11). The star indicates that variance in pore area responses for the Pre-Test vs. Post-Test was statistically different (Levene's Test, P < 0.05). Dollar sign indicates means were statistically different between the Pre-Test and Post-Test (Wilcoxon Signed Rank Test, P<0.05).