RecruitingBehavioural interventionConcussion Treatment in Older AdultsThe purpose of this study is to conduct the first randomized control trial for targeted treatments for concussion in adults 50 years or older. Participants will be enrolled at their first concussion clinical visit (V1) and their second study visit will occur after (up to 7 days) or concurrently with the participant's second concussion clinical visit, typically (but not limited to) between 21-31 days from V1.