Assessing Relative Linguistic Impairment With Model-Based Item Selection.

ABSTRACT:

Purpose

A picture naming test is presented that reveals impairment to specific mechanisms involved in the naming process, using accuracy scores on curated item sets. A series of psychometric validation experiments are reported.

Method

Using a computational model that enables estimation of item difficulty at the lexical and sublexical stages of word retrieval, two complimentary sets of items were constructed that challenge the respective psycholinguistic levels of representation. The difference in accuracy between these item sets yields the relative linguistic impairment (RLI) score. In a cohort of 91 people with chronic left-hemisphere stroke who enrolled in a clinical trial for anomia, we assessed psychometric properties of the RLI score and then used the new scale to make

SUBMITTER: Walker GM 

PROVIDER: S-EPMC11305613 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature