120 subjects more than 80y old (non-institutionalized) grouped in 4 age categories (80-84, 85-89, 90-94, 95 or more) will be evaluated through 18 neuropsychological tests (usually considered at Memory Clinics).~Subjects will be recruited from 5 Primary Care Centers by a random selection method (stratified by age group).~Normal limits will be defined by the percentiles of test punctuations. Previously, punctuations will be adjusted by age and education level by lineal regression.
Neuropsychological tests currently considered to evaluate the cognitive performance of the oldest-old population (more than 80 years) are not adapted to this group population. This trial aims to determine the normal limits for this group population of a set of 18 neuropsychological test. Results may improve the diagnostic cognitive evaluation of this population.