Project

Sentence Completion Generation in TBI

Goal: Goals: 1) explore executive dysfunction in chronic-phase traumatic brain injury (TBI) using the Hayling Sentence Completion Test (Burgess & Shallice, 1996, 1997) and 2) improve how errors are scored by applying Latent Semantic Analysis (LSA; Landauer, Foltz, & Laham, 1998) and lexical estimates (e.g., word frequency) to characterize the quality of word generations.

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Matthew J. Kmiecik
added 2 research items
Clinical investigations of individuals with chronic stage traumatic brain injury (TBI) showing mild-to-moderate levels of residual impairment largely use standardized neuropsychological assessments to measure executive functioning. The Hayling Sentence Completion Test (HSCT) relies upon several executive functions but detects cognitive impairments across studies inconsistently. We sought to (a) further characterize sentence completions on the HSCT by quantifying their semantic and lexical properties and (b) investigate cognitive components important for HSCT performance. A sample of 108 mild-to-moderate participants with TBI underwent a comprehensive neuropsychological assessment that evaluated verbal ability, working memory, processing speed, task switching, and inhibitory control. Multiple regression analyses suggest that these 5 cognitive components differentially contribute to describing HSCT performance and measures of semantic and lexical properties of unconnected sentence completions. Across all 3 measures, verbal ability was most predictive of performance, while inhibitory control was the least predictive. Working memory capacity also predicted HSCT performance, while processing speed and task switching ability predicted lexical measures. We present a method for quantitatively measuring the semantic and lexical properties of generated words on the HSCT and how these additional measures relate to executive functions. © 2017, American Psychological Association. This paper is not the copy of record and may not exactly replicate the final, authoritative version of the article. Please do not copy or cite without authors permission. The final article will be available, upon publication, via its DOI: 10.1037/pas0000510
Matthew J. Kmiecik
added a project goal
Goals: 1) explore executive dysfunction in chronic-phase traumatic brain injury (TBI) using the Hayling Sentence Completion Test (Burgess & Shallice, 1996, 1997) and 2) improve how errors are scored by applying Latent Semantic Analysis (LSA; Landauer, Foltz, & Laham, 1998) and lexical estimates (e.g., word frequency) to characterize the quality of word generations.