The Aphasiology Archive
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Discourse Characteristics of Closed Head Injured and Non-Brain Injured Adults
Misclassified by Discriminant Function Analyses

Youse, Kathleen M. and Coelho, Carl A. and Mozeiko, Jennifer L.
Discourse Characteristics of Closed Head Injured and Non-Brain Injured Adults
Misclassified by Discriminant Function Analyses.
In Clinical Aphasiology Conference: Clinical Aphasiology Conference (2004 : 34th : Park City, UT : May 2004) / : (2004).

Abstract

In a previous study, discriminate function analyses (DFA) were employed to determine
the accuracy of various story narrative and conversational discourse measures in
classifying adults with closed head injury (CHI) and non-brain injured (NBI) individuals
(Coelho, Youse, Le, and Feinn, 2003). These analyses correctly predicted group
membership with 70-81% accuracy. The present study re-examined the performance of
the CHI and NBI participants who were incorrectly classified in an effort to determine
what aspects of their discourse performance contributed to the misclassifications. Results
indicate that for some of the discourse measures there appears to be a broad range of
performance that overlapped the participant groups making a simple CHI versus NBI
distinction difficult. Delineation of subgroups or patterns of performance, as well as
stylistic variation, will increase the sensitivity of discourse measures.

EPrint Type:Clinical Aphasiology Abstract
Subjects:UNSPECIFIED
ID Code:1649
Conference:Clinical Aphasiology Conference: Clinical Aphasiology Conference (2004 : 34th : Park City, UT : May 2004)
Additional Information:ABSTRACT ONLY. No full text available.