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    Effects of high frequency hearing loss on the University of Canterbury Adaptive Speech Test - Filtered Words (UCAST-FW) (2011)

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    Type of Content
    Theses / Dissertations
    UC Permalink
    http://hdl.handle.net/10092/6112
    http://dx.doi.org/10.26021/5893
    
    Thesis Discipline
    Audiology
    Degree Name
    Master of Audiology
    Publisher
    University of Canterbury. Communication Disorders
    Collections
    • Science: Theses and Dissertations [4486]
    Authors
    Abu-Hijleh, Ali
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    Abstract

    Objective: The primary purpose of this study was to determine the influence of high frequency peripheral hearing loss on test performance on the University of Canterbury Adaptive Speech Test – Filtered Words (UCAST-FW). We also aimed to investigate (1) if there is an ear advantage in performing the UCAST-FW; (2) whether there is any correlation between the UCAST-FW score and age; (3) the effectiveness of a binaural practice run in reducing the learning effect; and (4) the average time required for older adults to complete the UCAST-FW. Method: A total of 18 participants with normal hearing (≤ 25 dB Hearing Level (HL) at octave intervals of 250 through 4000 Hz in both ears) and 19 participants with varying degrees of high frequency sensorineural hearing loss (>25 dB HL at frequencies above 1000 Hz) were included in this study. All participants were native New Zealand English speakers, aged between 55-71 years, with normal low frequency hearing (≤25 dB at 250, 500 and 1000 Hz), had speech scores consistent with their audiogram, normal cognition and judged by the examiner to be capable of completing test protocols in terms of sufficient eyesight, alertness and motor control. Participants underwent a full diagnostic hearing test, the Montreal Cognitive Assessment, the Dichotic Digits Test, the Random Gap Detection Test and the UCAST-FW. Results: Findings indicated that the presence of a high frequency peripheral hearing loss had no significant influence on the UCAST-FW score. Findings also showed no significant ear advantage, or any trend between the participant’s UCAST-FW score and their age. A binaural practice run comprised of 5 initial and 15 working reversals was effective in reducing any learning effect. The UCAST-FW took an average of 15 minutes to complete, and the results showed no correlation between the test completion time and the participant’s age. Conclusion: Findings suggested that the listener’s high frequency peripheral hearing sensitivity had no significant influence on their UCAST-FW score and thus the UCAST-FW can potentially be an effective test for assessing Auditory Processing Disorder (APD) in older adults and the elderly regardless of their high frequency peripheral hearing sensitivity. The development of test material in New Zealand English, as well as the investigation of the validity of the UCAST-FW in assessing APD in older adults and the influence of cognitive functioning on test performance is necessary before the UCAST-FW can be implemented in New Zealand clinical Audiology settings.

    Keywords
    audiology; hearing loss; auditory processing; aging
    Rights
    Copyright Ali Abu-Hijleh
    https://canterbury.libguides.com/rights/theses

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    • Development of the New Zealand Stimuli for the University of Canterbury Adaptive Speech Test-Filtered Words (UCAST-FW) 

      Murray, Sarah Louise (University of Canterbury. Communication Disorders, 2012)
      Auditory processing disorder (APD) is a label that describes a variable set of symptoms that share a common feature of difficulty listening to sounds in the absence of an actual audiological deficit (Moore, 2006). Clinical ...
    • The development of a new technique for the normalisation of the University of Canterbury adaptive speech test- filtered words (UCAST-FW). 

      Gibbins, J. M. (University of Canterbury, 2017)
      Low-pass filtered word tests, in which a speech sample is degraded using a low-pass filter (LPF), are one class of low-redundancy test commonly used in the diagnosis of auditory processing disorder (APD). Due to the high ...
    • Assessment of auditory processing disorder in children using an adaptive filtered speech test 

      Rickard N.A.; Heidtke U.J.; O'Beirne, Greg A. (INFORMA HEALTHCARE, 2013)
      Objective: One type of test commonly used to assess auditory processing disorder (APD) is the 'filtered words test' (FWT), in which a monaural, low-redundancy speech sample is distorted by using filtering to modify its ...
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