Caroline Jones

Emotional prosodic processing in auditory hallucinations

Deficits in emotional prosodic processing, the expression of emotions in voice, have been widely reported in patients with schizophrenia, not only in comprehending emotional prosody but also expressing it. Given that prosodic cues are important in memory for voice and speaker identity, Cutting has proposed that prosodic deficits may contribute to the misattribution that appears to occur in auditory hallucinations in psychosis. The present study compared hallucinating patients with schizophrenia, non-hallucinating patients and normal controls on an emotional prosodic processing task. It was hypothesised that hallucinators would demonstrate greater deficits in emotional prosodic processing than non-hallucinators and normal controls. Participants were 67 patients with a diagnosis of schizophrenia or schizoaffective disorder (hallucinating=38, non-hallucinating=29) and 31 normal controls. The prosodic processing task used in this study comprised a series of semantically neutral sentences expressed in happy, sad and neutral voices which were rated on a 7-point Likert scale from sad (-3) through neutral (0) to happy (+3). Significant deficits in the prosodic processing tasks were found in hallucinating patients compared to non-hallucinating patients and normal controls. No significant differences were observed between non-hallucinating patients and normal controls. In the present study, patients experiencing auditory hallucinations were not as successful in recognising and using prosodic cues as the non-hallucinating patients. These results are consistent with Cuttings hypothesis, that prosodic dysfunction may mediate the misattribution of auditory hallucinations.

Synthesized speech intelligibility and persuasion: Speech rate and non-native listeners

This experiment assessed the effect of variation in speech rate on comprehension and persuasiveness of a message presented in text-to-speech (TTS) synthesis to native and non-native listeners. Eighty non-native speakers of English and 80 native speakers of Australian English were randomly assigned to listen to eight banking product descriptions under one of four conditions: normal rate (155 words per minute) with no background noise, normal rate with multi-talker background noise (+6dB SNR), fast-normal (178 words per minute) with no background noise, and fast-normal with multi-talker background noise. Participants completed comprehension tests and rated each products usefulness. A faster rate lowers comprehension for both native and non-native listeners but does not influence the persuasiveness of the message. The findings have implications for the selection of speech rates for persuasive messages delivered to native and non-native listeners using TTS.

Parameters in Television Captioning for Deaf and Hard-of-Hearing Adults: Effects of Caption Rate Versus Text Reduction on Comprehension

Caption rate and text reduction are factors that appear to affect the comprehension of captions by people who are deaf or hard of hearing. These 2 factors are confounded in everyday captioning; rate (in words per minute) is slowed by text reduction. In this study, caption rate and text reduction were manipulated independently in 2 experiments to assess any differential effects and possible benefits for comprehension by deaf and hard-of-hearing adults. Volunteers for the study included adults with a range of reading levels, self-reported hearing status, and different communication and language preferences. Results indicate that caption rate (at 130, 180, 230 words per minute) and text reduction (at 84%, 92%, and 100% original text) have different effects for different adult users, depending on hearing status, age, and reading level. In particular, reading level emerges as a dominant factor: more proficient readers show better comprehension than poor readers and are better able to benefit from caption rate and, to some extent, text reduction modifications.

Toward a construct definition of informed consent comprehension

Variation in how informed consent comprehension tests have been developed may be largely due to the absence of a standardized construct definition. Developing a construct definition would provide a standardized framework for determining how an instrument should be constructed, implemented, interpreted, and applied. Therefore, we utilized the Delphi consensus approach with an international expert panel (N= 19) to gather knowledge, opinions and eventually consensus for a construct definition. Expert consensus was achieved after three revision cycles. While acknowledging that there are limitations to this study, it nonetheless should be considered as a step toward standardization of a construct definition of informed consent comprehension.

Variation in Voice Onset Time in Stops in Gurindji Kriol: Picture Naming and Conversational Speech

Gurindji Kriol is the home language of children and adults under about 40 years of age in the traditionally Gurindji-speaking communities of northern Australia. Nearly all words in Gurindji Kriol are derived from Gurindji or from Kriol, both of which have been described as lacking a stop voicing contrast, at least in basilectal varieties in the case of Kriol. In this study, we describe variation in voice onset time in Gurindji Kriol, in both picture naming and in conversational speech by young Gurindji Kriol speaking women. For picture naming, Australian English comparison data are also reported. The results indicate that in Gurindji Kriol, VOT varies systematically in expected ways by place of articulation, and position in word and utterance, but not according to the phonological voicing category of cognate English words. Initial stops tend to have short-lag VOT of up to 30 ms; values can be longer in English code-switched forms. Medial stops tend to have negative VOT. The present data do not suggest a voicing contrast based on VOT.

Comparing vowels in Gurindji Kriol and Katherine English: citation speech data

Gurindji Kriol is the home language of children and adults under about 40 years of age in traditionally Gurindji speaking communities of northern Australia. For phonetics and phonology, a significant aspect of the mixed language status of Gurindji Kriol is that, in running speech, approximately two-thirds of word tokens are Kriol-derived, and one-third are Gurindji-derived. In this study, we describe vowel pronunciation in the Kriol-derived words relative to their English cognates, by comparing picture-prompted citation speech from five young Gurindji Kriol speaking women and four young Australian English speaking women from Katherine, the nearest town. The results indicate systematic differences in vowel pronunciation and vowel variability between Gurindji Kriol and Katherine English, in monophthongs and diphthongs. We also consider the vowel variation in these tokens in the context of the likely vowel phoneme inventory in Gurindji Kriol, or the extent of permitted within-category variation in the languages.

From principle to practice: community consultation regarding access to Indigenous language material in archival records at the State Library of New South Wales

Abstract In the context of Indigenous languages, archival science in Australia continues to move from a theoretical framework of considering record subjects as third parties to a ‘participants model’. In a participants model framework record subjects are considered co-creators and custodians of the intellectual property of the record. However, the shift from theory to practice is still an under-described challenge currently facing archival professionals. This article reports on an experience of applying guidelines developed by First Languages Australia (FLA) and National and State Libraries of Australasia (NSLA) aimed at enhancing the rights of Indigenous Australians over records that contain Indigenous language material. A team of researchers from the State Library of New South Wales (SLNSW) Indigenous Services branch and Western Sydney University engaged with four Indigenous language groups to evaluate records containing Indigenous language material held at the SLNSW. On viewing the archival records of Indigenous language material members of community groups expressed a diversity of opinions and suggestions. This feedback was grouped by the authors into the following themes: painful remembrance of the provenance of the archival record, evaluations of the value of the documents, custodianship and use of the language material, and access to the SLNSW records. The authors found that participants in the study substantially shaped the process of implementing the protocols.