Visual information can hinder working memory processing of speech
2013•ASHA
Purpose The purpose of the present study was to evaluate the new Cognitive Spare
Capacity Test (CSCT), which measures aspects of working memory capacity for heard
speech in the audiovisual and auditory-only modalities of presentation. Method In
Experiment 1, 20 young adults with normal hearing performed the CSCT and an
independent battery of cognitive tests. In the CSCT, they listened to and recalled 2-digit
numbers according to instructions inducing executive processing at 2 different memory …
Capacity Test (CSCT), which measures aspects of working memory capacity for heard
speech in the audiovisual and auditory-only modalities of presentation. Method In
Experiment 1, 20 young adults with normal hearing performed the CSCT and an
independent battery of cognitive tests. In the CSCT, they listened to and recalled 2-digit
numbers according to instructions inducing executive processing at 2 different memory …
Abstract
Purpose
The purpose of the present study was to evaluate the new Cognitive Spare Capacity Test (CSCT), which measures aspects of working memory capacity for heard speech in the audiovisual and auditory-only modalities of presentation.
Method
In Experiment 1, 20 young adults with normal hearing performed the CSCT and an independent battery of cognitive tests. In the CSCT, they listened to and recalled 2-digit numbers according to instructions inducing executive processing at 2 different memory loads. In Experiment 2, 10 participants performed a less executively demanding free recall task using the same stimuli.
Results
CSCT performance demonstrated an effect of memory load and was associated with independent measures of executive function and inference making but not with general working memory capacity. Audiovisual presentation was associated with lower CSCT scores but higher free recall performance scores.
Conclusions
CSCT is an executively challenging test of the ability to process heard speech. It captures cognitive aspects of listening related to sentence comprehension that are quantitatively and qualitatively different from working memory capacity. Visual information provided in the audiovisual modality of presentation can hinder executive processing in working memory of nondegraded speech material.
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