Specific impairments are focal deficits which have limited impact on the brain's global ability to function. Adjusting and accounting for such specific impairments is important as these can artificially reduce the person's performance. The testing procedures in the ACLS-6 have attempted to screen out some of these specific impairments with questions and assessment tasks aimed at testing the person's eyesight and hand function. Clinicians will need to ensure adaptive equipment such as glasses and hearing aids are used when cognitive disabilities are accompanied by additional impairments.