Development and Validation of the Alzheimer's Questionnaire (AQ).

The Alzheimer's Questionnaire (AQ) was developed to be brief and accurate informant-based assessment for primary care and geriatric physicians to use in screening for cognitive impairment. To date, several studies have been carried out and published establishing the diagnostic accuracy and psychometric validity of the AQ. This paper will provide a review of the studies that have been carried out to establish the AQ as a valid and accurate informant-based assessment of cognitive function.