An evaluation of multiple‐choice test images for comprehension assessment in aphasia

Heuer, Sabine; Hallowell, Brooke

doi:10.1080/02687030600695194

Cited by 29 publications

(19 citation statements)

References 25 publications

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“…For example, Dietz et al (2006) found people with aphasia benefitted from viewing high-context images as measured by increased communication of information and AAC system acceptance. Also, Heuer and Hallowell (2007) found that neurologicallyintact adults identified target items appearing in typical contexts more easily than without contexts, although the time spent viewing contextually complex images was greater than that expended viewing no-context images. Cumulatively, these results suggest that people take longer to process information conveyed through contextually-rich images than images with little or no contextual content but, in doing so, they attain greater understanding.…”

Section: Contextualization Of Images and Verbal Promptsmentioning

confidence: 95%

Navigation of a Dynamic Screen AAC Interface by Survivors of Severe Traumatic Brain Injury

Wallace

Hux

Beukelman

2010

Augmentative and Alternative Communication

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The researchers examined the effect of cognitive flexibility, image contextualization, and prompt type on accuracy and speed when adults with severe traumatic brain injury (TBI) navigated dynamic screen augmentative and alternative communication (AAC) interfaces. Eighteen participants formed two groups based on cognitive flexibility status. Given matching informative versus uninformative prompts and three image contextualization conditions, participants located words on 3-level AAC systems. ANOVA computations revealed differences between groups and between prompt types for navigation accuracy; differences occurred among image conditions and between prompt types for navigation speed. Analyses using responses from participants with cognitive flexibility challenges revealed inter-subject variability regarding error types. Overall, findings suggest cognitive flexibility may predict who may and may not need explicit training to master AAC device navigation.

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Section: Contextualization Of Images and Verbal Promptsmentioning

confidence: 95%

Navigation of a Dynamic Screen AAC Interface by Survivors of Severe Traumatic Brain Injury

Wallace

Hux

Beukelman

2010

Augmentative and Alternative Communication

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“…Eye-tracking protocols also have been used to study bottom-up processes of visual attention due to influences of physical stimulus characteristics such as color and complexity, as well as semantic conveyance features, such as concept frequency and concreteness of concepts conveyed, regardless of whether a verbal stimulus is presented (Andrews & Coppola, 1999; Hallowell, Douglas, Wertz & Kim, 2004; Heuer & Hallowell, 2007, 2009). If eye-tracking indices are sensitive to changes in complexity of visual stimulus properties and linguistic stimuli, it is logical that they may be sensitive to changes in processing load over time, while participants are listening to auditory stimuli and simultaneously looking at visual stimuli.…”

Section: Introductionmentioning

confidence: 99%

A novel eye-tracking method to assess attention allocation in individuals with and without aphasia using a dual-task paradigm

Heuer

Hallowell

2015

Journal of Communication Disorders

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Numerous authors report that people with aphasia have greater difficulty allocating attention than people without neurological disorders. Studying how attention deficits contribute to language deficits is important. However, existing methods for indexing attention allocation in people with aphasia pose serious methodological challenges. Eye-tracking methods have great potential to address such challenges. We developed and assessed the validity of a new dual-task method incorporating eye tracking to assess attention allocation. Twenty-six adults with aphasia and 33 control participants completed auditory sentence comprehension and visual search tasks. To test whether the new method validly indexes well-documented patterns in attention allocation, demands were manipulated by varying task complexity in single- and dual-task conditions. Differences in attention allocation were indexed via eye-tracking measures. For all participants significant increases in attention allocation demands were observed from single- to dual-task conditions and from simple to complex stimuli. Individuals with aphasia had greater difficulty allocating attention with greater task demands. Relationships between eye-tracking indices of comprehension during single and dual tasks and standardized testing were examined. Results support the validity of the novel eye-tracking method for assessing attention allocation in people with and without aphasia. Clinical and research implications are discussed.

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“…The verbal stimulus (sentence) corresponded to one of the images (the target) in the multiple-choice arrays while the other three images served as foils. Pictures used in the multiple-choice arrays were grayscale images created by a professional artist with extensive experience in developing visual stimuli specifically designed to minimize the influence of visual image characteristics on allocation of attention (Heuer & Hallowell, 2007, 2009). In the MLS task participants were asked to select the image that best matched the sentence.…”

Section: Methodsmentioning

confidence: 99%

A new modified listening span task to enhance validity of working memory assessment for people with and without aphasia

Ivanova

Hallowell

2014

Journal of Communication Disorders

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Deficits in working memory (WM) are an important subset of cognitive processing deficits associated with aphasia. However, there are serious limitations to research on WM in aphasia largely due to the lack of an established valid measure of WM impairment for this population. The aim of the current study was to address shortcomings of previous measures by developing and empirically evaluating a novel WM task with a sentence-picture matching processing component designed to circumvent confounds inherent in existing measures of WM in aphasia. The novel WM task was presented to persons with (n = 27) and without (n = 33) aphasia. Results demonstrated high concurrent validity of a novel WM task. Individuals with aphasia performed significantly worse on all conditions of the WM task compared to individuals without aphasia. Different patterns of performance across conditions were observed for the two groups. Additionally, WM capacity was significantly related to auditory comprehension abilities in individuals with mild aphasia but not those with moderate aphasia. Strengths of the novel WM task are that it allows for differential control for length versus complexity of verbal stimuli and indexing of the relative influence of each, minimizes metalinguistic requirements, enables control for complexity of processing components, allows participants to respond with simple gestures or verbally, and eliminates reading requirements. Results support the feasibility and validity of using a novel task to assess WM in individuals with and without aphasia.

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An evaluation of multiple‐choice test images for comprehension assessment in aphasia

Cited by 29 publications

References 25 publications

Navigation of a Dynamic Screen AAC Interface by Survivors of Severe Traumatic Brain Injury

Navigation of a Dynamic Screen AAC Interface by Survivors of Severe Traumatic Brain Injury

A novel eye-tracking method to assess attention allocation in individuals with and without aphasia using a dual-task paradigm

A new modified listening span task to enhance validity of working memory assessment for people with and without aphasia

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