The Montreal Cognitive Assessment (MOCA) is a test used to detect cognitive impairments. This test is available in different languages including french. A short version (the 5 minutes MOCA) has also been validated through a phone call use that allows to develop some epidemiological approaches. Nevertheless, this short version has not been validated in french.~The main aim of the study is to validate the french translation of the short version of the MOCA as compared the the full french version of the test.~To validate the short version, several groups of subjects will be included : healthy subjects, Alzheimer disease patients, Parkinson or Huntington diseases patients as well as diabetic patients.~The inclusion of both healthy subjects and patients with different types of cognitive impairments will allow to validate the short version of the test.~All subjects and patients will first be submitted to the full version of the MOCA during a face to face procedure. Thirty to forty days later, they will be submitted to the short version of the test through a phone call performed by an independent rater.~Subgroups of healthy subjects and patients will also be used to determine the test-retest and inter-rater reliability of the short version of the MOCA.
The aim of the study is to validate a french version of the 5 minutes version of the Montreal Cognitive Assessment as compared to the french full version of this test.