MoCA Visuospatial Abilities — 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.
Question 7: The MoCA visuospatial/executive domain contributes how many points to the total score?
- 3 points
- 4 points
- 5 points (Correct answer)
- 6 points
Correct answer: 5 points
The Visuospatial/Executive domain includes: 1 point for Trail Making B, 1 point for cube copy, and 3 points for clock drawing (contour, numbers, hands) = 5 points total.
Question 8: Which neurological condition is particularly associated with severely impaired visuospatial performance on the MoCA?
- Frontotemporal dementia
- Vascular dementia
- Lewy body dementia and posterior cortical atrophy (Correct answer)
- Primary progressive aphasia
Correct answer: Lewy body dementia and posterior cortical atrophy
Lewy body dementia and posterior cortical atrophy (a variant of Alzheimer's disease) are strongly associated with prominent visuospatial deficits, often more severe than memory deficits at early stages.
Question 9: On the MoCA, how is the cube copy task scored?
- 0-3 points based on accuracy
- 0-2 points based on proportion and lines
- 0 or 1 point only (Correct answer)
- 1 point for attempt, 2 for accuracy
Correct answer: 0 or 1 point only
The cube copy is scored as 1 point (correct) or 0 points (incorrect) — a single binary score. There is no partial credit for a partially correct three-dimensional representation.
Question 10: What should the examiner do if a patient asks to see the cube model again during copying?
- Remove the model to test memory for the cube
- Allow the patient to see the model as it remains visible throughout (Correct answer)
- Show the model once more then remove it
- Remind the patient they saw the cube already
Correct answer: Allow the patient to see the model as it remains visible throughout
The stimulus cube remains visible throughout the copying task. It is not taken away from the patient. The patient should be encouraged to refer to the model as needed.
Question 11: A patient with right hemisphere parietal damage would MOST likely show difficulties on which MoCA visuospatial tasks?
- Sentence repetition and letter fluency only
- Cube copy and clock drawing, possibly with left-sided neglect features (Correct answer)
- Serial 7 subtraction and digit span only
- Naming and abstract thinking only
Correct answer: Cube copy and clock drawing, possibly with left-sided neglect features
Right parietal lesions typically produce left-sided spatial neglect and visuoconstructional deficits. This would affect the cube copy and clock drawing (particularly left-sided neglect: numbers clustered on the right, left hand incorrect).
Question 12: When administering the MoCA cube copy task, the examiner should provide the patient with:
- A blank sheet of paper and colored pencils
- The MoCA form with the pre-printed cube model and a pencil (Correct answer)
- A ruler for accurate line drawing
- A three-dimensional block to hold and examine
Correct answer: The MoCA form with the pre-printed cube model and a pencil
The examiner provides the printed MoCA form (which has the cube drawing already on it) and a pen or pencil. No additional tools or grids are given. The patient draws directly on the form.
