Neuropsychological testing is the use of formal tests of mental ability to assess brain functioning including Memory. A neuropsychological assessment can be an important tool in helping your doctor diagnose conditions that impact cognitive (mental) functioning. Neuropsychologists use these tests to help determine if a person is suffering from or experiencing a condition that impacts brain functioning (e.g. a traumatic brain injury, stroke or developmental conditions including learning disabilities). The process works by comparing the performance of an individual on the tests with the performance of large groups of others who have also taken the tests. The neuropsychologist will look at the test results and determine whether the person's performance looks more like the performance of a group with no conditions or more like a group with a known condition. Neuropsychological Assessment can help to diagnose various conditions and can be used to help select the best treatment options.