Adaptation of the Mini-Mental State Examination (MMSE) for the Reunion Island Population

Inclusion criteria: * For the healthy population : aged 60 to 89 years, residing in Reunion for more than 5 years, able to understand the test instructions, available for a one-hour interview, affiliated with a social security scheme, with informed consent. * For the sick population : aged 60 to 89 years, residing in Reunion for more than 5 years, presenting probable or possible Alzheimer's disease and/or probable vascular cognitive disorder, able to understand the test instructions, available for a one-hour interview, affiliated with a social security scheme, with informed consent. Exclusion criteria: * For the healthy populationhistory of neurological pathology, neurodegenerative pathology with cognitive expression, refusing to participate in the study, under legal protection. * For the sick population: acute unresolved medical decompensation or acute psychic decompensation, refusing to participate in the study, under legal protection.