1 / 1

Information Representation in AAC Systems for People with Chronic Aphasia

Information Representation in AAC Systems for People with Chronic Aphasia . Funded in part by: AAC-RERC, NIDRR, USDE. PURPOSE. Results. Stimulus Sets. Response Time-Picture Type. Task I-Preference.

dianne
Download Presentation

Information Representation in AAC Systems for People with Chronic Aphasia

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Information Representation in AAC Systems for People with Chronic Aphasia Funded in part by: AAC-RERC, NIDRR, USDE PURPOSE Results Stimulus Sets Response Time-Picture Type Task I-Preference • To determine whether people with severe aphasia preferred and identified with greater accuracy and speed: (a) personally-relevant, contextualized pictures; (b) non-personally-relevant, contextualized pictures; or (c) iconic images. • To determine whether people with severe aphasia Identified pictured information corresponding to episodes, nouns, or verbs with greater accuracy and speed when images were (a) personally-relevant, contextualized; (b) non-personally-relevant, contextualized; or (c) iconic. • 16 pictures • Personally-relevant, contextualized • Non-personally-relevant, contextualized pictures • Iconic images • 3 target words assigned to 3 picture stimulus sets • Picture and word sets were judged for similarity in visual context • 3 judge panel using 3-point rating scale • Each picture and word pair had to receive rating of 2 or higher PROCEDURES • Contextually-Rich Visual Images • Pictures, photographs, or images that represent situations, places, or experiences by depicting people or objects in relation to one another, the natural environment, and the central action of a scene (McKelvey, Dietz, Hux, Weissling, Beukelman, 2007). • Experimental Design: Repeated Measures • Session I • Western Aphasia Battery • Vision screening • Gathering of photographs • Picture verification • Session II • Task I - preference • Task II – picture identification Response Time-Word Type Accuracy Picture Type METHODS Miechelle McKelvey, Karen Hux, David Beukelman, and Aimee R. Dietz Participants • 8 Adults with severe aphasia • 5 Women • 3 Men • Age • Mean = 61 years • Range = 25 to 86 years • Time Post Onset • Mean = 4 years 8 months • Range = .25 to 19.5 years • Aphasia Quotient • Mean = 25.34 • Range = 5.86 to 58.30 Examples of Tasks Stimuli Task I Task II Target:Baby shower • Informants • 4 spouses • 3 daughters • 1 mother • Presents (noun) • Opening (verb) • Baby shower (episode) Accuracy for Word Type Variables • Independent • Stimulus Picture Type • Personally-relevant, contextualized • Non-personally–relevant, contextualized pictures • Iconic images • Stimulus Word Type • Noun, Verb, Episode • Dependent • Preferred Picture Type • Accuracy • Speed of Accurate Response Summary of Results • Participants had a clear preference for personally-relevant, contextualized pictures. • Participants identified personally-relevant, contextualized pictures with greatest level of accuracy. • Participants showed a trend for identifying personally-relevant, contextualized pictures and non-personally-relevant, contextualized pictures faster than iconic images. http://aac.unl.edu/

More Related