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Testing & Diagnosis

Cognitive testing

Quick answer

Cognitive testing measures specific abilities so change can be tracked objectively over time.

Author:
Illinois Dementia Guide editorial team
Medically reviewed by:
Amarish Dave, DO, Board Certified Neurologist
Published:
August 2026
Last medically reviewed:
August 2026
Geographic relevance:
Illinois, United States

Overview

Testing samples memory, attention, language, visual-spatial ability, and executive function. Results are interpreted alongside education, language, hearing, mood, and daily function.

What the results show

  • Which cognitive domains are affected
  • Severity relative to expected performance
  • A baseline for comparison at future visits

What scores do not show

  • A score alone does not identify the disease causing the change
  • Anxiety, hearing loss, fatigue, and depression can lower scores
  • Highly educated people may score in the normal range despite real decline

Medically reviewed. Last reviewed August 2026. This page is educational information, not individualized medical advice.

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