The purpose of this research study is to investigate different types of task training to determine if training improves thinking processes following traumatic brain injury.

Inclusion Criteria:

• If you have had a Traumatic Brain Injury (TBI)or no history of neurological disease/damage.
• If you are between the ages of 19 and 65.

Exclusion Criteria:

For participants with Traumatic Brain Injury:

• If you have a history of prior neurological disorders (e.g., stroke, seizures, or brain tumor).
• If your Brain injury is less than 6 months ago.

For healthy participants:

-If you have a history of prior neurological disorders (e.g., head injury, stroke, seizures, or brain tumor).

For All participants:

• If you have significant psychiatric history (such as schizophrenia or bipolar disorder.)
• If you have a alcohol or drug abuse history.
• If you are currently taking certain types of medications, which the study doctor will review.
• If you do not have a working knowledge of the English Language.