MoCA Visuospatial Abilities 2 — Questions and Answers
Question 1: Which two drawing tasks in the MoCA assess visuospatial abilities?
- Clock drawing and Trail Making B
- Cube copy and clock drawing (Correct answer)
- Cube copy and sentence repetition
- Trail Making B and cube copy
Correct answer: Cube copy and clock drawing
The MoCA visuospatial section includes a three-dimensional cube copy task and a clock drawing task, both of which require spatial processing and constructional ability.
Question 2: On the MoCA cube copy task, what features must the copied cube demonstrate to earn 1 point?
- It must be perfectly proportioned to the model
- It must be three-dimensional with parallel lines of approximately equal length (Correct answer)
- It only needs to be closed and box-like
- Any closed three-dimensional shape is acceptable
Correct answer: It must be three-dimensional with parallel lines of approximately equal length
The cube copy earns 1 point if it is three-dimensional, has all parallel lines roughly parallel, and all sides are roughly equal in proportion. A flat two-dimensional square does not receive credit.
Question 3: Which domain does the clock drawing fall under on the MoCA form?
- Memory
- Language
- Visuospatial/Executive (Correct answer)
- Orientation
Correct answer: Visuospatial/Executive
Clock drawing is categorized under the Visuospatial/Executive domain on the MoCA because it requires both spatial construction and executive planning.
Question 4: What does poor performance on the MoCA cube copy task most directly indicate?
- Motor weakness of the dominant hand
- Visuoconstructional impairment, suggesting parietal lobe dysfunction (Correct answer)
- Language processing failure
- Impaired semantic memory
Correct answer: Visuoconstructional impairment, suggesting parietal lobe dysfunction
Difficulty reproducing the three-dimensional cube reflects visuoconstructional impairment, often associated with parietal lobe dysfunction, and is seen in Alzheimer's disease, Lewy body dementia, and cortical posterior disorders.
Question 5: A patient copies the cube but draws it as a flat square with lines attached. This copy earns:
- 1 point — it resembles a cube
- 0 points — the copy is not three-dimensional (Correct answer)
- 0.5 points as partial credit
- 1 point if the lines are straight
Correct answer: 0 points — the copy is not three-dimensional
A flat two-dimensional representation of a cube does not meet the requirement for a three-dimensional copy. It scores 0 on the cube copy task.
Question 6: Why does the MoCA assess visuospatial abilities rather than limiting testing to verbal and memory tasks?
- Because visuospatial tasks are easy to score objectively
- Because verbal and memory tasks are sufficient alone
- Because visuospatial deficits are prominent in several dementia subtypes (Correct answer)
- Because the MoCA is designed for visual artists
Correct answer: Because visuospatial deficits are prominent in several dementia subtypes
Visuospatial deficits are prominent features of Alzheimer's disease, Lewy body dementia, and posterior cortical atrophy. Including visuospatial tasks increases the sensitivity of the MoCA for detecting these specific dementia subtypes.
MoCA Visuospatial Abilities 2
Which two drawing tasks in the MoCA assess visuospatial abilities?