Including response delays in language tasks yields variable results for people with aphasia. Some improve relative to immediate response conditions, others perform more
poorly, and others show no significant change. The effect of response delays on
performance accuracy varies within individuals depending on the language task. The
mechanism that drives this heterogeneity is unknown. In these studies, we investigated
factors contributing to differences in performance accuracy in naming and repetition
following a response delay. In Experiment 1, we explored the contribution of stimulus
duration to accuracy in delay conditions by manipulating picture exposure time in
naming. We hypothesized that shorter picture exposure times would lead to lower
accuracy in delayed naming conditions, similar to an established trend in delayed
repetition (Sayers et al. 2023c). Shorter picture exposure time was associated with lower
accuracy and greater variety of temporal impairments (i.e., improved or poorer
performance) than naming with longer exposure times. Shortening picture exposure time
may reduce contributions of visual semantics, increasing reliance on the language system.
In Experiment 2, we compared the measures of the timeliness of semantic and
phonological activation transmission with performance in immediate and delayed naming
and repetition. Slower semantic activation transmission was associated with relatively
improved performance in delayed naming but poorer performance in delayed repetition.
We attribute this to the order of access to linguistic representations. In naming, semantic
activation initiates the retrieval process, while in repetition, it supports phonological
activation, making it more enduring in the face of decay in delayed response conditions. / Communication Sciences
| Identifer | oai:union.ndltd.org:TEMPLE/oai:scholarshare.temple.edu:20.500.12613/10206 |
| Date | 05 1900 |
| Creators | Sayers, Matthew, 0000-0003-1088-6792 |
| Contributors | Martin, Nadine, Reich, Jodi, Reilly, Jamie, Giovanetti, Tania, Hunting Pompon, Rebecca |
| Publisher | Temple University. Libraries |
| Source Sets | Temple University |
| Language | English |
| Detected Language | English |
| Type | Thesis/Dissertation, Text |
| Format | 121 pages |
| Rights | IN COPYRIGHT- This Rights Statement can be used for an Item that is in copyright. Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available., http://rightsstatements.org/vocab/InC/1.0/ |
| Relation | http://dx.doi.org/10.34944/dspace/10168, Theses and Dissertations |
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