The Alzheimer's Disease Knowledge Scale: development and psychometric properties

Gerontologist. 2009 Apr;49(2):236-47. doi: 10.1093/geront/gnp023. Epub 2009 Mar 25.


Purpose: This study provides preliminary evidence for the acceptability, reliability, and validity of the new Alzheimer's Disease Knowledge Scale (ADKS), a content and psychometric update to the Alzheimer's Disease Knowledge Test.

Design and methods: Traditional scale development methods were used to generate items and evaluate their psychometric properties in a variety of subsamples.

Results: The final 30-item, true/false scale takes approximately 5-10 min to complete and covers risk factors, assessment and diagnosis, symptoms, course, life impact, caregiving, and treatment and management. Preliminary results suggest that the ADKS has adequate reliability (test-retest and internal consistency) and validity (content, predictive, concurrent, and convergent).

Implications: The ADKS is designed for use in both applied and research contexts, capable of assessing knowledge about Alzheimer's disease among laypeople, patients, caregivers, and professionals.

Publication types

  • Research Support, N.I.H., Extramural
  • Validation Study

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Alzheimer Disease*
  • Female
  • Health Knowledge, Attitudes, Practice*
  • Humans
  • Male
  • Middle Aged
  • Psychometrics*
  • Surveys and Questionnaires / standards*
  • Young Adult