Montreal Cognitive Assessment

The Montreal Cognitive Assessment (MoCA) is a short cognitive screening test administered by a clinician. It takes around ten minutes, scores out of 30, and is designed to flag mild cognitive impairment — the borderline state between healthy ageing and dementia — that older instruments often miss.

It was developed by Ziad Nasreddine in 1996 and has become one of the most widely used cognitive screens in clinics and research worldwide.

What it covers

A MoCA includes brief sub-tests for:

• Visuospatial and executive function — copying a cube, drawing a clock
• Naming — identifying line drawings of animals
• Memory — recalling five words after a delay
• Attention — digit span, vigilance task, serial 7s subtraction
• Language — sentence repetition, verbal fluency
• Abstraction — finding similarities between words
• Orientation — date, place

Each section contributes a few points to the 30-point total. A score of 26 or higher is typically considered normal; below 26 suggests further evaluation.

Why it matters

The MoCA has been shown to be more sensitive than the MMSE for picking up mild cognitive impairment — particularly executive dysfunction, which the MMSE largely misses.

Cross-cultural validity

The original MoCA was developed and validated in highly-literate, English-speaking populations. Like the MMSE, it can misclassify cognitive status when used outside that context — performance is influenced by education and cultural familiarity with test items.

Adapted versions exist for many languages and educational backgrounds. Choosing the right instrument for the population being assessed is part of what we mean by locally appropriate cognitive screening.