The linguistic and cultural aspects of neuropsychological assessment in people with dementia
Objectives: Given the public health crisis that Alzheimer's disease (AD) has become (Naylor et al., 2012),neuropsychological assessment tools that provide timely and accurate identification of cognitive decline in older adults have gained increasing focus in the scientific literature. Accurate...
Gespeichert in:
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| Dokumenttyp: | Buch/Monographie Hochschulschrift |
| Sprache: | Englisch |
| Veröffentlicht: |
Heidelberg
04 Sep. 2023
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| DOI: | 10.11588/heidok.00033722 |
| Schlagworte: | |
| Online-Zugang: | Resolving-System, kostenfrei: https://nbn-resolving.de/urn:nbn:de:bsz:16-heidok-337222 Resolving-System, kostenfrei: http://dx.doi.org/10.11588/heidok.00033722 Verlag, kostenfrei, Volltext: http://www.ub.uni-heidelberg.de/archiv/33722 Resolving-System, kostenfrei: https://nbn-resolving.org/urn:nbn:de:bsz:16-heidok-337222 Langzeitarchivierung Nationalbibliothek, kostenfrei: https://d-nb.info/1300970960/34 
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| Verfasserangaben: | presented by Simge Celik ; advisor: Prof. Dr. Dr. h.c. Andreas Kruse |
MARC
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| 245 | 1 | 4 | |a The linguistic and cultural aspects of neuropsychological assessment in people with dementia |c presented by Simge Celik ; advisor: Prof. Dr. Dr. h.c. Andreas Kruse |
| 264 | 1 | |a Heidelberg |c 04 Sep. 2023 | |
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| 502 | |b Dissertation |c Heidelberg University |d 2023 | ||
| 520 | |a Objectives: Given the public health crisis that Alzheimer's disease (AD) has become (Naylor et al., 2012),neuropsychological assessment tools that provide timely and accurate identification of cognitive decline in older adults have gained increasing focus in the scientific literature. Accurate evaluation of cognitive function and early identification of cognitive changes are paramount to understanding the disease course of AD and improving effective treatments and patients' quality of life. To this end, language offers a cognitive neuropsychological approach to identifying cognitive decline in the early stages of AD. Moreover, it represents a multi-dimensional variable that may influence the neuropsychological test performance of older adults due to its potential contribution to cognitive reserve. Therefore, the present thesis aims at combining two aspects of language to explore its potential in the early detection of AD and its association with neuropsychological test performance in older adults and cross-cultural neuropsychology. Study 1 assessed the currently available studies to explore whether discourse processing, particularly macro-structural discourse comprehension, offers a novel approach to neuropsychological testing in distinguishing normal cognitive aging from AD pathology-related decline. Study 2 evaluated the results of the studies that examined the impact of bilingualism on neuropsychological test performance in monolingual and bilingual older adults to inform the neuropsychological evaluation of these groups in clinical practice. Study 3 investigated the influence of bilingualism and its associated factors, namely, cultural background and acculturation, on cognitive screening tests in three clinically diagnosed AD patient groups to identify a cross-culturally/linguistically appropriate measure of cognition. Method: Data of Study 1 and Study 2 were based on the original research studies published in English investigating discourse comprehension and bilingualism in healthy older adults, individuals with mild cognitive impairment (MCI), and AD. A literature search focusing on these topics with participant groups aged 60 years and over was conducted in PubMed, Web of Science, and PsycINFO databases. Study 1 included eight articles consisting of studies only with cross sectional designs. Study 2 was comprised of twenty-seven articles, of which sixteen articles had cross-sectional designs. On the other hand, Study 3 was original research based on a cross sectional design targeting culturally/linguistically diverse patients diagnosed with AD. Specifically, the study sample consisted of Turkish immigrant (n=21) and monolingual, non-immigrant German (n=20) and Turkish (n=24) patients with AD. All participants were administered the Mini-Mental State Examination (MMSE), Rowland Universal Dementia Assessment Scale (RUDAS), a dementia severity rating scale, and a self-report measure of depression. Additionally, self-report measures of bilingualism and acculturation were conducted with Turkish-immigrant participants with AD. Results: Study 1 revealed that people with AD and MCI have significant deficits in discourse comprehension, which are not observed in cognitively normal older adults of any age. On five of six discourse comprehension measures, groups with AD were significantly worse than healthy older adults, with one measure yielding mixed findings. Furthermore, compared to the cognitively healthy groups, individuals with MCI showed significant performance deficits in discourse comprehension measures similar to those with AD. Study 2 indicated better performance for bilingual older adults on executive function tests when compared to their monolingual counterparts. On the other hand, bilinguals were found to perform poorer than monolinguals on tests assessing the language domain. However, these findings did not remain robust when the impact of bilingualism on test performance was investigated longitudinally. Lastly, Study 3 provided further evidence on the linguistic and educational bias of the MMSE when employed in culturally and linguistically diverse individuals with AD. Bilingualism was linked to better performance on the MMSE in the Turkish immigrant group. German patients with AD obtained higher scores on this test than the other two groups. Furthermore, RUDAS was shown to be a better alternative for assessing global cognition in German and Turkish individuals with AD. Conclusion: The macro-structural discourse comprehension assessment paradigm has shown promising results in identifying the preclinical stages of AD. Further research on this paradigm may help develop a diagnostic tool with a clinical value that can be utilized for differential diagnosis, predicting conversion from MCI to dementia in research and clinical settings. On the other hand, another aspect of linguistic skills, namely, the evaluation of research on the link between bilingualism and neuropsychological test performance, did not provide definitive answers to the question of bilingual advantages and disadvantages addressed in the second study due to methodological challenges in the field. However, it identified a comprehensive and critical list of clinically and empirically relevant bilingualism-associated variables which may guide future research and neuropsychological practice. In light of the Study 2 findings, Study 3 filled an important gap in the literature by exploring cultural, demographic, and immigration related factors that may influence neuropsychological testing experiences in Germany. The study findings may help the field of cross-cultural neuropsychology serve culturally and linguistically diverse populations more efficiently. Overall, the present thesis contributed to the literature by highlighting the importance and potential of linguistic abilities in the clinical diagnosis and neuropsychological evaluation of individuals with dementia. | ||
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