Cognitive Impairment

Question 1

What is the primary purpose of the Clock Drawing Test (CDT)?

Answer 1

Screening for cognitive impairment and dementia (especially Alzheimer’s disease)

Question 2

How long does the Clock Drawing Test take to administer?

Answer 2

1–2 minutes

Question 3

Is the Clock Drawing Test a diagnostic or screening tool?

Answer 3

Screening tool (not diagnostic)

Question 4

Impaired performance on the Clock Drawing Test indicates damage to which brain region?

Answer 4

Right parietal lobe

Question 5

The Clock Drawing Test primarily evaluates which hemisphere?

Answer 5

Right hemisphere

Question 6

Inability to correctly complete the Clock Drawing Test suggests dysfunction on which side of the brain?

Answer 6

RIGHT side

Question 7

What cognitive abilities are indirectly assessed by the CDT?

Answer 7

Visuospatial ability, executive functioning, attention, and planning

Question 8

What are the standard instructions given to the patient during the CDT?

Answer 8

Draw a clock, put in all the numbers, and set the time to 10 past 11.”

Question 9

What specific errors suggest cognitive impairment on the CDT?

Answer 9

Incorrect number placement
Missing numbers
Incorrect hand placement
Poor spacing or organization

Question 10

A patient places all numbers on one side of the clock. What does this suggest?

Answer 10

Visuospatial impairment → right parietal lobe dysfunction

Question 11

Which dementia is the Clock Drawing Test particularly sensitive for?

Answer 11

Alzheimer’s disease and other dementias

Question 12

Why is the CDT (clock drawing test) useful in primary care and psychiatric settings?

Answer 12

Fast, easy, requires no equipment, and screens cognition efficiently

Question 13

What does the mnemonic “Dr. Palorhem” help you remember? And what does it stand for?

Answer 13

Brain region involved in CDT impairment
D – Damage
R – Right
Pa – Parietal
Lo – Lobe
Or – OR (where things are assessed)
R – Right (emphasized)
Hem – Hemisphere

Question 14

A patient fails the Clock Drawing Test. Which lobe is MOST likely affected?

Answer 14

Right parietal lobe

Question 15

What distinguishes the CDT from the MMSE or MoCA?

Answer 15

CDT emphasizes visuospatial and right-hemisphere function

Question 16

One-line ANCC rule for the Clock Drawing Test?

Answer 16

Clock drawing failure = RIGHT parietal lobe dysfunction

Question 17

Why is the CDT especially helpful for patients with low education or language barriers?

Answer 17

Minimal language demand; relies on visuospatial skills

Question 18

Does a normal CDT rule out dementia?

Answer 18

No — it is a screening tool, not definitive