A mild traumatic brain injury results from a change in brain functioning due to physical trauma with possible permanent sequelae. There are open head injuries, when the skull is penetrated, and closed head injuries, when the skull is not penetrated. After one head injury, the risk of a second injury is tripled; and after a second head injury, the risk of a third injury is eight times greater (Brain Injury Association, 1995). The severity of brain injury is deter¬ mined through the utilization of a number of standardized scales. The most commonly used scale is the 15-point Glasgow Coma Scale (GCS), which evaluates the stimulus required for the child to induce eye opening, motor response, and verbal response. A mild injury is classified as a score of 13 or more. A second means of measuring brain injury severity is the length of posttraumatic amnesia, which is the time between the injury and the return of ongoing memory. A mild injury involves amnesia of 1 hr or less.