Thesis
Long-term retention of skilled visual search following severe closed-head injury
Washington State University
Master of Science (MS), Washington State University
2005
Handle:
https://hdl.handle.net/2376/308
Abstract
Seventeen closed-head injured (CHI) and 10 control participants who had earlier received extensive consistent-mapping (CM) training (i.e., 3600 trials) in a semantic category visual search task (Schmitter-Edgecombe & Beglinger, 2001), received follow-up testing following a long-term (5 or 10 month) retention interval. In a CM training situation, individuals always respond in the same way to a specific class of stimuli (e.g., the category exemplar "arm" always requires the same response). Following initial CM training, both the CHI and control groups demonstrated dramatic performance improvements and the development of an automatic attention response (AAR), indicating both task-specific and stimulus-specific learning. In this study, retention for task-specific and stimulus-specific aspects of skilled visual search was assessed using new CM stimuli and the originally trained CM stimuli, respectively. No significant group differences were found in the level of retention for either skill type, indicating that individuals with a CHI were able to retain task-specific and stimulus-specific skills over a long-term retention interval without practice at a level comparable to normal controls. Exploratory analyses also revealed that the CHI participants that returned for the 5-month retention interval showed greater skill retention that those that returned at the 10-month interval.
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Details
- Title
- Long-term retention of skilled visual search following severe closed-head injury
- Creators
- Shital Prabodh Pavawalla
- Contributors
- Maureen Schmitter-Edgecombe (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Psychology, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Identifiers
- 99900525183201842
- Language
- English
- Resource Type
- Thesis