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Abstract

Dementia assessment in adults with intellectual disabilities (ID) is a challenging task, but past work by clinicians and researchers has improved diagnostic accuracy. Diagnostic criteria were outlined [1] and found to be feasible and useful [2–4]. Gradations from mild to major neurocognitive disorders were identified and found to affect dementia prevalence figures [5–7]. A battery of tests was proposed to identify significant declines [8, 9]. Ongoing investigations examined the sensitivity and specificity of tests from the proposed battery and additional alternative batteries [2, 3, 6, 10–25]. The purpose of this chapter is to outline and discuss general issues and factors that can affect dementia assessment either directly or indirectly [3, 11, 26]. Such issues are important to consider when evaluating tests for clinical and research purposes. As indicated in Table 2.1, a discussion of general theoretical issues will be followed by a more specific discussion of methodological issues.

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Notes

  1. 1.

    The term mild neurocognitive disorder will be used in this chapter to be consistent with DSM V terminology and to avoid selection of one of many terms used in research literature (e.g., mild cognitive impairment (MCI), possible dementia, probable dementia). The term dementia will be used instead of major neurocognitive disorder as it has been consistently used in the literature.

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Burt, D.B. (2018). Issues in Dementia Assessment Methods. In: Prasher, V. (eds) Neuropsychological Assessments of Dementia in Down Syndrome and Intellectual Disabilities. Springer, Cham. https://doi.org/10.1007/978-3-319-61720-6_2

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