Faculty Collaboration Database

A Large-Scale Comparison of Main Concept Production Between Persons With Aphasia and Persons Without Brain Injury. Am J Speech Lang Pathol 2019 Mar 11;28(1S):293-320

Date

05/11/2019

Pubmed ID

31072179

Pubmed Central ID

PMC6437704

DOI

10.1044/2018_AJSLP-17-0166

Scopus ID

2-s2.0-85065819208 (requires institutional sign-in at Scopus site)   26 Citations

Abstract

Purpose The purposes of this study are to provide clinicians and researchers with introductory psychometric data for the main concept analysis (MCA), a measure of discourse informativeness, and specifically, to provide descriptive and comparative statistical information about the performance of a large sample of persons not brain injured (PNBIs) and persons with aphasia (PWAs) on AphasiaBank discourse tasks. Method Transcripts of 5 semi-spontaneous discourse tasks were retrieved from the AphasiaBank database and scored according to detailed checklists and scoring procedures. Transcripts from 145 PNBIs and 238 PWAs were scored; descriptive statistics, median tests, and effect sizes are reported. Results PWAs demonstrated overall lower informativeness scores and more frequent production of statements that were inaccurate and/or incomplete. Differences between PNBIs and PWAs were observed for all main concept measures and stories. Comparisons of PNBIs and aphasia subtypes revealed significant differences for all groups, although the pattern of differences and strength of effect sizes varied by group and discourse task. Conclusions These results may improve the investigative and clinical utility of the MCA by providing descriptive and comparative information for PNBIs and PWAs for standardized discourse tasks that can be reliably scored. The results indicate that the MCA is sensitive to differences in discourse as a result of aphasia. Supplemental Material https://doi.org/10.23641/asha.7485647.

Author List

Dalton SGH, Richardson JD

Author

Sarah Grace Dalton PH.D., CCC-SLP Assistant Professor in the Speech Pathology and Audiology department at Marquette University

MESH terms used to index this publication - Major topics in bold

Adult
Aged
Aged, 80 and over
Aphasia
Brain Injuries
Communication
Comprehension
Databases, Factual
Female
Humans
Language Tests
Male
Middle Aged
Psychometrics
Reference Values
Young Adult