Addenbrooke's Cognitive Examination III

Multi-domain cognitive screen with subtype sensitivity.

Overview

A cognitive screening battery assessing attention, memory, fluency, language, and visuospatial function, useful in differentiating dementia subtypes.

Use cases

Memory clinics, neurology outpatient evaluation, frontotemporal dementia research.

Assessment intelligence

Score range
0 – 100
Direction
Higher = better
Scoring method
Sum
Time to score
~20 min
Subscales
  • Attention
    0-18
  • Memory
    0-26
  • Fluency
    0-14
  • Language
    0-26
  • Visuospatial
    0-16
Cutoff thresholds & interpretation
SeverityThresholdInterpretation
Normal≥88No cognitive impairment
Suggestive of dementia<82Likely dementia, refer for further workup

Two cutoffs published: 88 (high sensitivity) and 82 (high specificity).

Editorial notes

High sensitivity for early dementia; supports differentiation of AD vs FTD subtypes.

Available languages

Validation studies (2)

  • Validation of the ACE-III in early dementia
    Hsieh S, Schubert S, et al. · Dementia and Geriatric Cognitive Disorders · 2013
    DOI: 10.1159/000351671
  • ACE-III in differentiation of AD and FTD
    Bruno D, Schurmann B. · International Psychogeriatrics · 2018
    DOI: 10.1017/S1041610218000273

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