Individual group contrasts of PTSD versus GAD or HC separately were then performed to substantiate the PTSD versus controls difference. As summarized in Table 3, concerning α power, these contrasts revealed essentially identical results as reported above. Moreover, the effect sizes were comparable (ds = 0.74–1.04) and survived correction for multiple comparisons. In addition, HC and GAD did not differ on any of these contrasts (ps > 0.39).
