Objective and Subjective Clustering Methods for Verb Fluency Responses From Individuals With Alzheimer’s Dementia and Cognitively Healthy Older Adults.
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| Title: | Objective and Subjective Clustering Methods for Verb Fluency Responses From Individuals With Alzheimer’s Dementia and Cognitively Healthy Older Adults. |
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| Authors: | Fisher, Madison N.1, Casenhiser, Devin M.1, Eun Jin Paek1 epaek@uthsc.edu |
| Source: | American Journal of Speech-Language Pathology. 2023 Supplement, Vol. 32 Issue 6, p2589-2601. 13p. |
| Subject Terms: | *Alzheimer's disease, *Phonological awareness, *Cognition, *Comparative grammar, *Inter-observer reliability, Reliability (Personality trait), Research evaluation, Confidence intervals, T-test (Statistics), Intraclass correlation, Research funding, Cluster analysis (Statistics) |
| Abstract: | Purpose: The verb fluency task has been researched using a variety of analysis methods and shown its sensitivity to declines in executive functioning and lexical retrieval abilities in various neurogenic populations. Few studies to date, however, have analyzed clusters and switches in the task, and there is a lack of robust analysis methods that preclude subjectivity and potential rater bias. The purpose of this study was to investigate the reliability when using subjective clustering methods and to determine the feasibility of using an objective clustering method to determine verb fluency performance in individuals with Alzheimer’s dementia (IwDs) and cognitively healthy older adults (CHOAs). Method: Responses from a verb fluency task were obtained from IwDs and CHOAs. Group differences were examined using an objective clustering method for multiple variables regarding clustering and switching. We also calculated the intrarater, interrater, and intermethod reliability using intraclass coefficients. Results: Significant group differences were found when utilizing the objective clustering method in all variables except the average cluster size, with IwDs performing poorer than CHOAs. Intrarater reliability was excellent. Interrater reliability between two authors and intermethod reliability between the objective and subjective methods were variable ranging from moderate to good. Conclusions: The results from using the objective clustering method in this study are consistent with the previous literature, making it a viable option for clustering analyses on the verb fluency task, which naturally minimizes subjectivity and rater bias. Alternatively, employing a thoroughly validated and reliable subjective approach can also mitigate potential rater bias and improve replicability across studies. [ABSTRACT FROM AUTHOR] |
| Copyright of American Journal of Speech-Language Pathology is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Education Research Complete |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: ehh DbLabel: Education Research Complete An: 173108086 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Objective and Subjective Clustering Methods for Verb Fluency Responses From Individuals With Alzheimer’s Dementia and Cognitively Healthy Older Adults. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Fisher%2C+Madison+N%2E%22">Fisher, Madison N.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Casenhiser%2C+Devin+M%2E%22">Casenhiser, Devin M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Eun+Jin+Paek%22">Eun Jin Paek</searchLink><relatesTo>1</relatesTo><i> epaek@uthsc.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22American+Journal+of+Speech-Language+Pathology%22">American Journal of Speech-Language Pathology</searchLink>. 2023 Supplement, Vol. 32 Issue 6, p2589-2601. 13p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Alzheimer's+disease%22">Alzheimer's disease</searchLink><br />*<searchLink fieldCode="DE" term="%22Phonological+awareness%22">Phonological awareness</searchLink><br />*<searchLink fieldCode="DE" term="%22Cognition%22">Cognition</searchLink><br />*<searchLink fieldCode="DE" term="%22Comparative+grammar%22">Comparative grammar</searchLink><br />*<searchLink fieldCode="DE" term="%22Inter-observer+reliability%22">Inter-observer reliability</searchLink><br /><searchLink fieldCode="DE" term="%22Reliability+%28Personality+trait%29%22">Reliability (Personality trait)</searchLink><br /><searchLink fieldCode="DE" term="%22Research+evaluation%22">Research evaluation</searchLink><br /><searchLink fieldCode="DE" term="%22Confidence+intervals%22">Confidence intervals</searchLink><br /><searchLink fieldCode="DE" term="%22T-test+%28Statistics%29%22">T-test (Statistics)</searchLink><br /><searchLink fieldCode="DE" term="%22Intraclass+correlation%22">Intraclass correlation</searchLink><br /><searchLink fieldCode="DE" term="%22Research+funding%22">Research funding</searchLink><br /><searchLink fieldCode="DE" term="%22Cluster+analysis+%28Statistics%29%22">Cluster analysis (Statistics)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Purpose: The verb fluency task has been researched using a variety of analysis methods and shown its sensitivity to declines in executive functioning and lexical retrieval abilities in various neurogenic populations. Few studies to date, however, have analyzed clusters and switches in the task, and there is a lack of robust analysis methods that preclude subjectivity and potential rater bias. The purpose of this study was to investigate the reliability when using subjective clustering methods and to determine the feasibility of using an objective clustering method to determine verb fluency performance in individuals with Alzheimer’s dementia (IwDs) and cognitively healthy older adults (CHOAs). Method: Responses from a verb fluency task were obtained from IwDs and CHOAs. Group differences were examined using an objective clustering method for multiple variables regarding clustering and switching. We also calculated the intrarater, interrater, and intermethod reliability using intraclass coefficients. Results: Significant group differences were found when utilizing the objective clustering method in all variables except the average cluster size, with IwDs performing poorer than CHOAs. Intrarater reliability was excellent. Interrater reliability between two authors and intermethod reliability between the objective and subjective methods were variable ranging from moderate to good. Conclusions: The results from using the objective clustering method in this study are consistent with the previous literature, making it a viable option for clustering analyses on the verb fluency task, which naturally minimizes subjectivity and rater bias. Alternatively, employing a thoroughly validated and reliable subjective approach can also mitigate potential rater bias and improve replicability across studies. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of American Journal of Speech-Language Pathology is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1044/2023_AJSLP-22-00290 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 2589 Subjects: – SubjectFull: Alzheimer's disease Type: general – SubjectFull: Phonological awareness Type: general – SubjectFull: Cognition Type: general – SubjectFull: Comparative grammar Type: general – SubjectFull: Inter-observer reliability Type: general – SubjectFull: Reliability (Personality trait) Type: general – SubjectFull: Research evaluation Type: general – SubjectFull: Confidence intervals Type: general – SubjectFull: T-test (Statistics) Type: general – SubjectFull: Intraclass correlation Type: general – SubjectFull: Research funding Type: general – SubjectFull: Cluster analysis (Statistics) Type: general Titles: – TitleFull: Objective and Subjective Clustering Methods for Verb Fluency Responses From Individuals With Alzheimer’s Dementia and Cognitively Healthy Older Adults. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fisher, Madison N. – PersonEntity: Name: NameFull: Casenhiser, Devin M. – PersonEntity: Name: NameFull: Eun Jin Paek IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: 2023 Supplement Type: published Y: 2023 Identifiers: – Type: issn-print Value: 10580360 Numbering: – Type: volume Value: 32 – Type: issue Value: 6 Titles: – TitleFull: American Journal of Speech-Language Pathology Type: main |
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