Table 2 lists two-tailed P-values for comparisons between d’ results for the different training groups. The unpaired Student’s T-Test was used because the sample means, standard deviations, and number of participants in each group are known. Also, the Group d’ values used in the calculation of the t statistic were averages of the average d’ values for each participant and could be assumed to follow a normal distribution
according to the Central Limit Theorem. There was not a significant difference in the d’ results between the groups (α=0.10). The p-value corresponds to the probability that a test-statistic would be greater than or equal to the values observed. A p-value closer to 0 would correlate to a significant difference in the samples.
Table 2: Two-tailed p-values of group comparisons for overall d’ results