Clock Drawing

The Clock Drawing Test is a reliable screening tool for dementia and other cognitive dysfunctions. It is effective in the early detection of dementia and in monitoring cognitive change. The clock drawing test can be can be one component of a full assessment for dementia or Alzheimer’s.

Administered by

  • Clinicians

Functions Tested

  • Memory
  • Concentration
  • Initiation
  • Energy
  • Mental clarity
  • Indecision
  • Graphical abilities
  • Stimulus-Bound Response
  • Conceptual abilities
  • Spatial abilities
  • Planning abilities
  • Perseveration

Interpreting Results

Six features in this test are important in successfully identifying problems in cognition. They are known as critical clock-drawing errors:

  • Wrong time
  • No hands
  • Missing numbers
  • Number substitutions
  • Repetition
  • Refusal to participate