Neuropsychological Assessment Of The Oldest-Old Population.(NEUROPSIC-GR)

Inclusion Criteria: * 80 or more years old * Residence at Comarca del Garraf * Able to be transfered to study center * Sufficient reading and writing capacity to carry out the neuropsychological tests, at the evaluator's discretion. Exclusion Criteria: * Patient at end-of-life situation or with a very short life expectancy (days-weeks). * Hospital admission in the previous 3 months. * History of relevant mental illness: major depression, psychosis, bipolar disorder, obsessive-compulsive disorder. * Disease of the central nervous system with possible cognitive impairment: Parkinson's disease, multiple sclerosis, brain tumor, stroke with cognitive impairment, epilepsy, severe traumatic brain injury. * History of alcoholism or substance abuse. * Severe sensory deficit that prevents performing neuropsychological tests, at the discretion of the evaluator. * Positive Shortened Spanish Informant Questionnaire for Cognitive Decline in the Elderly questionnaire (SS-IQCODE) or Lobo's Cognitive Mini-examination Test (spanish adaptation of Minimental of Folstein test) with a score \< 23 (20 in people with low schooling or illiteracy). * Dementia criteria according to the Diagnostic and Statistical Manual of Mental Disorders IV.