justine green by HC120622165917

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									     Accent on Aphasia

•   Justine Green
•   SLT Bucks Hospital Trust
•   University College London BSc Speech Sciences 2010
•   British Aphasiology Society project prize 2009-2010
                  Background
                    Picture
•unfamiliar accents affect speech processing in healthy
adults(1).

• deficits are greater for non-native-accented speech(2).

• the effects of accent are more pronounced with
adults with aphasia(3;4).
              Participants

• 19 adults with chronic aphasia (varying
  severity following stroke).

• 19 adults without aphasia.
  Stimuli – Story Recall Task

• eight stories

• four stories were presented in a familiar
  accent (Southern Standard British English)

• four stories were presented in an unfamiliar
  non-native accent (Bengali).
                 Story Recall
• mimics the demands of everyday conversations.

• assesses greater linguistic complexity than single
  sentences.

• less demanding than spontaneous narrative.

• provides propositional content as well as lexical
  choices and syntactic structures.
               Procedure
• over two sessions, two weeks apart
  participants listened to recordings of each
  story and were asked to recall what they had
  heard.

• responses were scored for number of
  information units.
                                   Results
• all participants recalled                            12
                                                                                                                      Familiar
  stories more accurately                              11
                                                                                                                      Unfamiliar
  in the familiar accent                               10
  (F(1,36) = 76.347, p< 0.001)                         9



                                   Mean recall score
                                                       8

                                                       7
•    individuals with aphasia
                                                       6
    performed significantly
    worse than controls.                               5

    (F(1,36) = 6.601, p< 0.001).                       4

                                                       3

                                                       2

                                                       1
                                                            Participants with aphasia           Participants without aphasia
                                                                                   Accent condition
          Adults with Aphasia
  In the familiar condition:      In the unfamiliar condition:

“a man had an appointment
                                  “the police I think she had
   with his nurse and when he
   was going he heard a noise      an appointment or
   and when he realised the        something and she stopped
   chain from his bicycle snap,    to make a call I think to her
   someone helped him and I        dentist and I think the
   think he fix, this person       police stopped her”
   help him fix the puncture
   and he phoned the nurse
   to let her know and then
   he went to see her after
   that”
                       Effect of Age
                                                       8
• age only had an effect on                                                                          Familiar
   individuals with aphasia:                           7                                             Unfamiliar

   older participants scored
                                                       6
   significantly lower in the



                                   Mean recall score
   unfamiliar condition than                           5

   younger participants
                                                       4
  (F(1, 17) = 9.463, p = 0.007).
                                                       3


                                                       2
• no age effect was found
  for controls.                                        1


                                                       0
                                                           under 70s                      over 70s
                                                                       Accent condition
      Effect of Type of Aphasia
• no effect of type of aphasia in the                          7
  familiar condition.                                                                                         Anomic
                                                                                                              Conduction
  (F(1,8) = 0.588, p = 0.465).
                                                               6



•    significant interaction




                                         Mean Accuracy Score
                                                               5
     between the type of aphasia
     and accent.
    (F(1,8) = 12.730, p = 0.007).                              4




• significantly greater difficulty for                         3

  people with conduction aphasia
  when recalling the unfamiliar
                                                               2
  accent.                                                          Familiar                      Unfamiliar

                                                                              Accent Condition
                Summary

• Non-native accented speech is more difficult.

• Older people with aphasia have greater
  difficulty.

• People with conduction aphasia appear to
  have more difficulty than those with anomic
  aphasia.
       Practical Implications
• Increase awareness of accent on assessment
  performance and participation.

• Are people with aphasia able to adapt
  spontaneously?

• If not does auditory training help?

• If that is not possible the what modifications in
  the environment are needed?
              Thankyou

• Clients from UCL Communication Clinic

• Carolyn Bruce

• Caroline Newton
                             References
①   Adank, P., Evans, B., Stuart-Smith, J. & Scott, S. K. (2009). Comprehension of familiar and
    unfamiliar native accents under adverse listening conditions. Journal of Experimental
    Psychology: Human Perception and Performance 35, 520-529.
②   Munro, M. J. &Derwing, T. M. (1995). Processing time, accent and comprehensibility in the
    perception of native and foreign-accented speech. Language and Speech 38, 289-306.
③   Dunton, J., Bruce, C. & Newton, C. (in press). Investigating the impact of unfamiliar speaker
    accent on auditory comprehension in adults with aphasia. International Journal of Language &
    Communication Disorders.
④   To, C. (2009). Investigating the impact of unfamiliar regional and unfamiliar foreign accent in
    adults with aphasia: Unpublished BSc Thesis: University College London.
⑤   Mahendra, N., Bayles, K. A. & Harris, F. P. (2005). Effect of presentation modality on immediate
    and delayed recall in individuals with Alzheimer’s Disease. American Journal of Speech-Language
    Pathology 14, 144-155.
⑥   Bayles, K.A. &Tomoeda, C. K. (1993). The Arizona battery for Communication Disorders of
    Dementia. Tucson, AZ: Canyonlands.
⑦   Wilson, B. A., Cockburn, J &Baddeley, A. (2003). The RivermeadBehavioural Memory Test (RBMT-
    II). Reading: England: Thames Valley Test.
⑧   Adank, P. & Devlin, J. (2010). On-line plasticity in spoken sentence comprehension. Adapting to
    time compressed speech. Neuroimage 491124-1132.

								
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