Transcriptionless discourse analysis realising the clinicians dream - PowerPoint PPT Presentation

Title: Transcriptionless discourse analysis realising the clinicians dream


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• Transcription-less discourse analysis
  realising the clinicians dream?

M Brady,1 L Armstrong, 1,2 C Mackenzie, 3 J
Norrie 4
1 Nursing Midwifery and Allied Health Professions
Research Unit 2 Speech and Language Therapy, NHS
Tayside 3 Division of Speech and Language
Therapy, University of Strathclyde 4 Centre for
Healthcare Randomised Trials (CHaRT) Health
Services Research Unit, Aberdeen University
Views expressed are those of the authors and not
necessarily those of the Chief Scientist Office
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Background

• Discourse Analysis (DA) is essentially seen as
  clinical research tool rather than a clinical
  tool
• Transcription preceding DA seen as time consuming
• Recent work (turn-taking and gesture use) showed
  potential of transcription-less approach
• Overview of results with full details available
  in a forthcoming Aphasiology paper

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Objective

• To demonstrate the reliability and validity of
  transcription-less DA

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Participants

• 10 individuals living in Tayside (Scotland)
• Right handed
• Mild-moderate post-stroke aphasia
• Current or recently past speech and language
  therapy clients
• Audio- and video-recorded discourse samples

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Discourse samples
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Measures
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... more measures
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still more measures
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Analyses

• Transcription-based
• Two experienced DA raters
• Used transcripts, recordings and forms
• Transcription-less
• Four final year SLT student raters (plus one
  withdrawal)
• Five hours training
• Used recordings and forms only
• Inter-rater and intra-rater reliability
• Criterion validity (trans-based v trans-less
  analyses)

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Results

• Transcription based analysis
• Intra-rater reliability no significant
  differences
• Inter-rater reliability no significant
  differences
• Transcription-less analyses
• Validity measured by comparing two approaches
• Reliability
• Continuous measures - intra-class correlation
  coefficient
• Categorical measures - percentage agreement.

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Validity

• No significant differences between the scores
  from the two methods.

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Reliability

• Inter-rater reliability
• Acceptable in general
• Strongest for gesture totals
• Varied for turn-taking and repair measures
• Categorical measures
• Initiation (topic and conversational)
• Concept Analysis
• Percentage agreement was good

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Results Gesture Use (totals)
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Results Topic Use (totals)
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Results Turn-taking (totals)
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Results Repair
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Conclusions

• Demonstrated potential of transcription-less
  approach
• Valid Approach
• None of the measures overall gave significant
  differences between scores
• Armstrong, L, Brady, M, Mackenzie, C,
  Norrie, J (in press) Transcription-less analysis
  of aphasic discourse a clinicians dream or a
  possibility? Aphasiology.

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Acknowledgements

• Participants
• Forth Valley Speakability
• New and Emerging Applications of Technology,
  Department of Health, UK
• Transcription-less raters
• Claire Higgins, Dorothy Russell, Kirsty
  McLaughlan, Lesley Garret and Sharon Nelson
• Transcription work - Caitriona Hutton

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• Transcription-less discourse analysis
  realising the clinicians dream?

M Brady,1 L Armstrong, 1,2 C Mackenzie, 3 J
Norrie 4
1 Nursing Midwifery and Allied Health Professions
Research Unit 2 Speech and Language Therapy, NHS
Tayside 3 Division of Speech and Language
Therapy, University of Strathclyde 4 Centre for
Healthcare Randomised Trials (CHaRT) Health
Services Research Unit, Aberdeen University
Views expressed are those of the authors and not
necessarily those of the Chief Scientist Office
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still more measures
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Results Gesture Use (totals)
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Topic use validity and reliability measures for
the transcription-less method