Neurocognitive substrates of naming facilitation in aphasia. This research directly addresses the national research priority goal of ageing well, ageing productively, by providing foundational knowledge for improved outcomes in the growing population of individuals in Australia with language impairments from age-related disease. Outcomes of the proposed research will include (1) development of a new theory of word production which can improve treatment of language impairment, (2) an enhanced und ....Neurocognitive substrates of naming facilitation in aphasia. This research directly addresses the national research priority goal of ageing well, ageing productively, by providing foundational knowledge for improved outcomes in the growing population of individuals in Australia with language impairments from age-related disease. Outcomes of the proposed research will include (1) development of a new theory of word production which can improve treatment of language impairment, (2) an enhanced understanding of the cognitive and brain mechanisms involved in word production and its treatment after stroke, and (3) postgraduate training in state-of-the-art cognitive neuroimaging and language neuroscience research. Read moreRead less
How Strict is the Mother Tongue? Using Dialects to Probe Early Speech Perception and Word Recognition. This project will 1)advance knowledge of toddler word representations and their developmental precursors; 2) contribute to theories of phonological vs phonetic properties of spoken language; 3) explain how experience with the ambient language shapes children's phonological and lexical development. Moreover, the findings will 4) offer crucial new insights into sources of developmental disorders ....How Strict is the Mother Tongue? Using Dialects to Probe Early Speech Perception and Word Recognition. This project will 1)advance knowledge of toddler word representations and their developmental precursors; 2) contribute to theories of phonological vs phonetic properties of spoken language; 3) explain how experience with the ambient language shapes children's phonological and lexical development. Moreover, the findings will 4) offer crucial new insights into sources of developmental disorders (language delay, dyslexia) leading to improved early diagnosis and treatment; 5) bear on issues of second language learning; and by understanding the process by which young learners handle dialect variability, 6) provide insights into how automatic speech recognition systems can be made more robust to dialectal and foreign accent differences.
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Development of second language phonetic and phonological categories. The majority of the world's population speaks two or more languages, yet we know little about how multiple languages are accommodated within a single speaker. Why do children appear to learn a second language 'like a native' but adults invariably develop a clearly perceptible foreign accent? This project investigates a little-known fact - adult second language speakers also 'hear' with a foreign accent. As Australia becomes inc ....Development of second language phonetic and phonological categories. The majority of the world's population speaks two or more languages, yet we know little about how multiple languages are accommodated within a single speaker. Why do children appear to learn a second language 'like a native' but adults invariably develop a clearly perceptible foreign accent? This project investigates a little-known fact - adult second language speakers also 'hear' with a foreign accent. As Australia becomes increasingly multilingual increasing our understanding of the human capacity for language learning would strengthen Australia's social and economic fabric by leading to improved educational practices, work prospects for migrants and, most importantly, understanding between cultures.Read moreRead less
Captions for the Deaf and Hearing Impaired: Availability versus Accessibility. The availability of educational, informational and recreational services for deaf and hearing-impaired people has been dramatically facilitated by (i) increased television captioning due to the 2001 introduction of the Television Broadcasting Services Act; and (ii) trial introduction of real-time captioning in educational settings. These innovations must be matched by equally innovative ways of increasing the accessib ....Captions for the Deaf and Hearing Impaired: Availability versus Accessibility. The availability of educational, informational and recreational services for deaf and hearing-impaired people has been dramatically facilitated by (i) increased television captioning due to the 2001 introduction of the Television Broadcasting Services Act; and (ii) trial introduction of real-time captioning in educational settings. These innovations must be matched by equally innovative ways of increasing the accessibility of captions, which is currently limited by English literacy, caption speed, and caption reduction techniques. Here, systematic manipulation of these factors in experiments on television captioning with adults and educational captioning with children will determine how resources might best be directed to improving caption accessibility.Read moreRead less
Optimal Training Methods for Lexical Tone Perception by Children with Cochlear Implants: Application of Experimental Psychology Techniques. Cochlear implants (CIs) stimulate the auditory nerve via electrodes in the cochlear to provide auditory information to people who would otherwise be functionally deaf. Cochlear site stimulation is at a constant rate so, despite the genius of the CI, it cannot convey pitch information effectively. Such information is essential for perceiving and speaking ton ....Optimal Training Methods for Lexical Tone Perception by Children with Cochlear Implants: Application of Experimental Psychology Techniques. Cochlear implants (CIs) stimulate the auditory nerve via electrodes in the cochlear to provide auditory information to people who would otherwise be functionally deaf. Cochlear site stimulation is at a constant rate so, despite the genius of the CI, it cannot convey pitch information effectively. Such information is essential for perceiving and speaking tone languages, in which word meaning depends on consonants, vowels, and tones (conveyed mainly by pitch). A training method to improve tone perception will be developed with non-tone language non-CI through to tone language CI children drawing on experimental psychology methods, auditory and visual (lip & face) speech information, exaggerated tone cues, and metalinguistic instruction.Read moreRead less
Is reading automatic?: Investigating hypnotic elimination of the Stroop effect. Reading in literate people is often characterised as automatic; it cannot be prevented. Recent findings indicate however that hypnotic suggestion may prevent reading. This project: (1) investigates hypnotic elimination/modulation of automatic reading, (2) determines whether these effects arise either because reading does not occur under hypnotic suggestion or because suggestion leads to rapid inhibition of the resul ....Is reading automatic?: Investigating hypnotic elimination of the Stroop effect. Reading in literate people is often characterised as automatic; it cannot be prevented. Recent findings indicate however that hypnotic suggestion may prevent reading. This project: (1) investigates hypnotic elimination/modulation of automatic reading, (2) determines whether these effects arise either because reading does not occur under hypnotic suggestion or because suggestion leads to rapid inhibition of the results of the reading process, and (3) determines which components of the cognitive system can and cannot be affected by hypnotic suggestion. This project provides fresh perspective on how literate people respond to printed stimuli and on the concept of automaticity in cognitive psychology.Read moreRead less
Using written language to probe speech recognition models. Speech recognition models fall into two principal classes, with fundamentally different processing architectures. Feedback models (e.g. TRACE, McClelland & Elman, 1986) allow lexical knowledge to exert top-down control over phonemic analysis. Feedforward models (e.g. Merge, Norris, McQueen & Cutler, 2000) assume that information flow is entirely bottom-up. Our project adopts an innovative approach to testing between these model classe ....Using written language to probe speech recognition models. Speech recognition models fall into two principal classes, with fundamentally different processing architectures. Feedback models (e.g. TRACE, McClelland & Elman, 1986) allow lexical knowledge to exert top-down control over phonemic analysis. Feedforward models (e.g. Merge, Norris, McQueen & Cutler, 2000) assume that information flow is entirely bottom-up. Our project adopts an innovative approach to testing between these model classes, by examining the influence of written-word knowledge on speech perception. To distinguish the models, contrasts must test different processing levels and examine strategy effects. TRACE favors broad effects with limited strategic influence; Merge favors lexical effects that are necessarily sensitive to strategic factorsRead moreRead less
Reconciling perceptual and cognitive accounts of dyslexia: The neural rate deficit hypothesis. The proposed research will form part of a co-ordinated program to understand the causes of dyslexia, a disorder that affects a large number of children and often persists into adulthood. It complements parallel efforts to elucidate the genetic basis of dyslexia, the heterogeneity and subtypes of dyslexia, and the developmental precursors to the disorder. This research will inform early intervention and ....Reconciling perceptual and cognitive accounts of dyslexia: The neural rate deficit hypothesis. The proposed research will form part of a co-ordinated program to understand the causes of dyslexia, a disorder that affects a large number of children and often persists into adulthood. It complements parallel efforts to elucidate the genetic basis of dyslexia, the heterogeneity and subtypes of dyslexia, and the developmental precursors to the disorder. This research will inform early intervention and remediation efforts and will also assist in the understanding of the normal process of reading acquisition in children.Read moreRead less
Language, belief formation and visual cognition: cognitive and neuropsychological investigations. I will direct a programme of research and research training in cognitive science and cognitive neuropsychology at macquarie universtiy, with international collaborative links to the USA, Canada, France, Italy, Spain, Germany & New Zealand. This programme of research and research training will initially focus on
a)how people understand and produce language, and how these capabilities can break down ....Language, belief formation and visual cognition: cognitive and neuropsychological investigations. I will direct a programme of research and research training in cognitive science and cognitive neuropsychology at macquarie universtiy, with international collaborative links to the USA, Canada, France, Italy, Spain, Germany & New Zealand. This programme of research and research training will initially focus on
a)how people understand and produce language, and how these capabilities can break down after brain damage;
b)The relationship between visual memory and reading; and
c)The nature of the delusions seen in schizophrenia and other disorders, and what causes these delusions.Read moreRead less
Longitudinal twin study of literacy, language and attention. The primary practical national benefit will be in the unrivalled picture that emerges about how genetic factors interact with aspects of the familial and educational environment to determine the course of children's development in literacy and language. Policy makers in preschool and school education will be able to use the information to guide curriculum refinement and to develop policies for the early identification of children at d ....Longitudinal twin study of literacy, language and attention. The primary practical national benefit will be in the unrivalled picture that emerges about how genetic factors interact with aspects of the familial and educational environment to determine the course of children's development in literacy and language. Policy makers in preschool and school education will be able to use the information to guide curriculum refinement and to develop policies for the early identification of children at developmental risk in these domains. As an international project, the research will also promote scientific cooperation between Australia, the USA, and Scandinavia in a cutting-edge branch of human psychology, the interaction of genes and environment in psychological development.Read moreRead less