Reliability and validity of the Dutch Anxiety, Depression And Mood Scale in adults aged

Pauline C. M. Hamers*, Jans S. van Ool, Dederieke A. M. Festen, Jos G. M. Hendriksen, Patrick J. E. Bindels, Heidi Hermans

*Corresponding author for this work

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Background Reliable and valid screening instruments for depression and anxiety are needed for adults with intellectual disabilities. Methods Internal consistency (n = 198), inter-rater reliability (n = 41), test-retest reliability (n = 37) and criterion validity (n = 43) were studied in adults aged between 18 and 49 years. Internal consistency was also studied in a sample with epilepsy (n = 98). Results Internal consistencies of the Dutch ADAMS total scale and subscales were satisfactory to good (alpha = 0.76-0.92), as well as in the subgroup with epilepsy (alpha = 0.74-0.88). Inter-rater reliability and test-retest reliability were fair to excellent for the total scale (ICC's: 0.57-0.84) and subscales (ICC's: 0.43-0.86). The criterion validity of the Dutch ADAMS Depressive Mood subscale was good with a sensitivity of 88% (95% CI: 53%-98%) and a specificity of 80% (95% CI: 64%-90%). Conclusions Our study shows that the Dutch ADAMS is a reliable and valid instrument for adults aged between 18 and 49 years with intellectual disabilities (and comorbid epilepsy).

Original languageEnglish
Pages (from-to)568-574
Number of pages7
JournalJournal of Applied Research in Intellectual Disabilities
Issue number3
Publication statusPublished - May 2019


  • anxiety
  • depression
  • intellectual disabilities
  • reliability
  • validity

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