Information representation in aac systems for people with chronic aphasia l.jpg
Advertisement
This presentation is the property of its rightful owner.
1 / 1

Information Representation in AAC Systems for People with Chronic Aphasia PowerPoint PPT Presentation

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

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Information representation in aac systems for people with chronic aphasia l.jpg

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/


  • Login