MoCA — Montreal Cognitive Assessment

About

The Montreal Cognitive Assessment (MoCA) was developed by Dr. Ziad Nasreddine and colleagues in 2005 as a screening tool for mild cognitive impairment (MCI). It is a 30-point test administered in approximately 10 minutes covering eight cognitive domains. The MoCA has demonstrated superior sensitivity for detecting MCI compared to the MMSE (90% vs 18%), making it the preferred screening instrument for early cognitive decline. It is validated in over 50 languages and across diverse clinical settings including memory clinics, primary care, geriatrics, neurology, and post-stroke cognitive assessment. The standard cutoff score of ≤25 indicates possible MCI, with an education-adjusted scoring system for patients with ≤12 years of education (adding 1 point). Domain scores provide valuable insight into specific cognitive profiles — visuospatial/executive (5 points via trail-making, cube copy, clock draw), naming (3 points via low-familiarity animals), memory (5 points via delayed recall after 5-minute delay), attention (6 points via digit span, tapping, serial subtraction), language (3 points via repetition and fluency), abstraction (2 points via verbal similarities), and orientation (6 points via time and place). The MoCA is recommended by the National Institute for Health and Care Excellence (NICE), the American Academy of Neurology (AAN), and the Alzheimer's Association for cognitive screening in at-risk populations.

Formula

Total = Visuospatial/Executive (0-5) + Naming (0-3) + Attention (0-6) + Language (0-3) + Abstraction (0-2) + Delayed Recall (0-5) + Orientation (0-6). Add 1 point if education ≤12 years. Max 30.

The MoCA total score is calculated by summing scores across 7 domains (total possible 30 points): visuospatial/executive (5 points: trail-making, cube copy, clock draw), naming (3 points: lion, rhino, camel), attention (6 points: digit span forward/backward, tapping on letter A, serial 7s subtraction), language (3 points: repetition of 2 complex sentences, verbal fluency >11 F-words in 60s), abstraction (2 points: similarities between word pairs), delayed recall (5 points: recall 5 words after 5-minute delay, with optional category/phonemic cues), and orientation (6 points: date, month, year, day, place, city). For patients with ≤12 years of formal education, 1 point is added to the total score (not exceeding 30). A total score of ≤25 is the standard cutoff for detecting MCI (sensitivity 90%, specificity 87%). Domain-level interpretation is important: isolated memory impairment suggests amnestic MCI (typically Alzheimer's pathology), while multiple domain involvement suggests non-amnestic MCI.

Score Interpretation

The MoCA is the most sensitive widely-used screening tool for MCI, detecting deficits that the MMSE frequently misses. Its multi-domain assessment provides a cognitive profile that can differentiate between amnestic MCI (typically Alzheimer's pathology) and non-amnestic MCI (associated with vascular dementia, Lewy body dementia, or frontotemporal dementia). The inclusion of executive function and language tasks makes it particularly valuable for detecting frontal-subcortical pathology. The education-adjusted scoring ensures fair assessment across diverse populations. The MoCA is recommended by NICE, AAN, and Alzheimer's Association guidelines for cognitive screening.

Reference Ranges