Symptom-Targeted Approach to Rehabilitation for Concussion (STAR-C)

Inclusion Criteria: * mTBI defined per the VA/DoD Clinical Practice Guideline for the Management of Concussion-Mild Traumatic Brain Injury sustained in any context (deployment related or non-deployment-related) and at any time longer than 3 months previously. * a score of 2, 3, or 4 on any of the four Cognitive items on the NSI, to include participants who have cognitive complaints. * a score on the Word Reading Subtest of the Wide Range Achievement Test of a sixth-grade reading level or higher, to ensure participants can read study materials. Exclusion Criteria: * History of a moderate, severe, or penetrating TBI as defined by DoD/VA guidelines. * Lifetime diagnosis of schizophrenia or other psychotic/thought disorder. * Current participation in intensive behavioral health treatment (≥3 appointments /encounters per week) for any psychiatric or substance use disorder. * Current participation in other treatments that target cognition within the last two weeks (i.e., healthcare provider-prescribed cognitive rehabilitation in a group or individual format of any time duration or involving digital/game-based format of more than 4 hours per week). * History of a neurological disease affecting cognitive function, other than mild TBI, such as multiple sclerosis, stroke, brain tumor, or Parkinson Disease. * Current, active suicidal or homicidal ideation. * Daily use of narcotic pain medications. * Lack of access to technology or internet/cell phone service that supports telemedicine. * Current participation in other therapy targeting cognition (Note: This is not the same as Cognitive Behavioral Therapy/CBT which addresses psychological issues and may continue during participation in this research project).