Development of the New Zealand Stimuli for the University of Canterbury Adaptive Speech Test-Filtered Words (UCAST-FW) (2012)

Type of Content
Theses / DissertationsThesis Discipline
AudiologyDegree Name
Master of AudiologyPublisher
University of Canterbury. Communication DisordersCollections
Abstract
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 assessment of APD typically involves a test battery consisting of tests designed to examine the integrity of various auditory processes of the central auditory nervous system. Individuals with APD have difficulty recognising speech when parts of the signal are missing. One category of tests used to assess the extent to which this deficit is associated with reduced performance on the task is the low-pass filtered speech test. The University of Canterbury Adaptive Speech Test-Filtered Words (UCAST-FW) is a computer-based adaptive low-pass filtered speech test developed for the assessment of auditory processing skills in adults and children. Earlier studies with the UCAST-FW (McGaffin, 2007; Sincock, 2008; Heidtke, 2010; Abu-Hijleh, 2011) have produced encouraging results. However, there appear to be a number of confounding factors. The UCAST-FW is testing New Zealand listeners using an Australian recording of American test material. The purpose of the current study was to develop a new four-alternative forced choice test to replace the Northwestern University Children’s Perception of Speech (NU-CHIPS) stimuli the UCAST-FW currently utilises. The new test consists of 98 sets of four test items, (one target item and three foil alternatives) designed to be used in a four-alternative forced choice picture-pointing procedure. Phonemic analysis of the new word list and the NU-CHIPS word lists revealed a similar distribution of phonemes for target words of both word lists. The development of the new word list is described and the clinical applicability is explored.
Keywords
UCAST; auditory processing disorder; adaptive speech testing; low-pass filtered speech; four-alternative forced choice formatRights
Copyright Sarah Louise MurrayRelated items
Showing items related by title, author, creator and subject.
-
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 ... -
Effects of high frequency hearing loss on the University of Canterbury Adaptive Speech Test - Filtered Words (UCAST-FW)
Abu-Hijleh, Ali (University of Canterbury. Communication Disorders, 2011)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). ... -
Development of an adaptive low-pass filtered speech test for the identification of auditory processing disorders
O'Beirne, Greg A.; McGaffin, A.J.; Rickard, N.A. (University of Canterbury. Communication Disorders, 2012)Objective: One type of test commonly used to examine auditory processing disorders (APD) is the low-pass filtered speech test (LPFST), of which there are various versions. In LPFSTs, a monaural, low-redundancy speech sample ...