MoCA Cube Copying (Three-Dimensional Copy) Flashcards

A clinician notices a patient draws the cube piecemeal, with correct details but lost overall shape. Which hemisphere is most associated with this pattern?

Answer: Right hemisphere

Right-hemisphere lesions tend to disrupt the overall gestalt, producing fragmented drawings.

Left-hemisphere lesions affecting constructional ability typically produce which kind of cube drawing?

Answer: Simplified drawings with preserved overall shape but missing details

Left-sided damage tends to simplify drawings while keeping the global outline.

A patient scores 25 on the MoCA, failing only the cube, and has 16 years of education. How is the total interpreted using the standard cutoff?

Answer: Below the 26 normal cutoff; no education point is added

The education point is only for 12 years or less, so 25 stays below the 26 cutoff.

Why is a cube used rather than a simple square in the MoCA copy task?

Answer: It requires reproducing three-dimensional depth and spatial relations

Copying a cube demands depth perception and spatial planning beyond a flat shape.

A patient draws a correct 3D cube but adds shading to one face. How should the examiner score it?

Answer: Likely 0, because extra lines are not allowed

Shading adds lines not in the model, violating the no-extra-lines rule.

A patient states, 'I can't draw' and refuses to attempt the cube. What is the score?

Answer: 0 points

No drawing means the criteria cannot be met, so the item scores 0.

Which MoCA element is the cube copy most similar to in other cognitive tests?

Answer: The intersecting pentagons copy in the MMSE

Both are figure-copy tasks measuring visuoconstructional ability.