title: Comparison of the psychometric properties of four dementia knowledge measures: Which test should be used with dementia care staff?
abstract: OBJECTIVE
  To compare the psychometric properties of four measures of dementia institutional knowledge.
  
  
  METHODS
  Fifty-eight dementia care staff completed the Dementia Knowledge Assessment Tool Version Two (DKAT2), Alzheimer's Disease Knowledge Test (ADKT), Alzheimer's Disease Knowledge Scale (ADKS) and Dementia Knowledge Twenty (DK-20). The convergent validity and reliability of each measure were examined.
  
  
  RESULTS
  The level of dementia knowledge in this sample was similar to that reported in comparable surveys. The ADKT, DKAT-2 and DK-20 had marginal to acceptable internal consistency (α ≥ 0.67), and the ADKT, DK-20 and ADKS were positively correlated with each other (r's = 0.45-0.60), demonstrating convergent validity. The DKAT2 had lower intercorrelations with the other measures (r's = 0.32-0.45). The ADKS had poor internal consistency (α = 0.29).
  
  
  CONCLUSIONS
  As the first head-to-head comparison of these tests in a single sample, this study should assist clinicians and researchers to select a dementia knowledge test.
authors.affiliation: Clinical Neuropsychology Research Group, School of Psychology and Counselling, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia.
authors.forename: Karen A
authors.initials: KA
authors.lastname: Sullivan
authors.affiliation: Clinical Neuropsychology Research Group, School of Psychology and Counselling, Queensland University of Technology, Brisbane, Queensland, Australia.
authors.forename: Margaret A
authors.initials: MA
authors.lastname: Mullan
mesh_terms: D003704:Dementia / Q000175:diagnosis / Q000523:psychology / Q000628:therapy*; D007722:Health Knowledge, Attitudes, Practice; D006282:Health Personnel / Q000523:psychology*; D006707:Homes for the Aged; D006801:Humans; D009735:Nursing Homes; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
keywords: Alzheimer's; dementia; knowledge; reliability; validity