 Exclusion Criteria: Current drug or alcohol abuse 3 drinksday, past medical history of mental disorders i.e., schizophrenia, bipolar, neural injury i.e., cerebral vascular accident or traumatic brain injury, dementia, Parkinsons, diabetes mellitus, hearing impaired, or any other condition that contraindicates participation. Due to the inconclusive evidence regarding the influence of statin drugs on cognition, statin use will not be exclusionary. 