The primary purpose of this study is to investigate the effectiveness of a brief
mindfulness-based intervention for targeting chronic physiological underarousal and
post-concussive symptoms following a mild head injury (MHI), as self-reported by
undergraduate university students. For the purposes of this study, MHI is defined (and
identified) through our demographic questionnaire as a traumatic-based injury to the head -
"Have you ever hit your head with a force sufficient to alter your state of consciousness"
(consistent with the Kay et al., 1993 criteria/definition; American Congress of
Rehabilitation Medicine - ACRM). The investigators exclude congenital or genetic injuries.