<p>TBI = Traumatic Brain Injury, FrSBe = Frontal Systems Behavior Scale. <sup>a</sup> Moderate/severe group significantly different to Control group, <sup>b</sup> Moderate/severe group significantly different to Mild group, <sup>c</sup> Control group significantly different to Moderate/severe group and Mild group. All differences were significant at <i>p</i> < 0.05.</p