Willem retired in 2014 but has full academic status at Flinders University.
Willem has a degree in Dutch language & literature, a master's degree in General Linguistics (cum laude), both from the University of Amsterdam, and a PhD (Psychology) from Flinders. He came to Flinders in 1985.
Willem was a member of the Centre for Neuroscience, the Australian Society for the Study of Brain Impairment, and the International Association of Logopedics and Phoniatrics (IALP). He was an OzReader for the Australian Research Council, on the review board of the Internet Journal of Allied Health Sciences and Practice, a reviewer for international journals in the fields of speech pathology, bilingualism and (neuro)linguistics, and a committee member of the Multicultural Affairs Committee of the IALP.
Willem was a visiting (Erasmus Mundus) Professor in May-June 2012 in the European Masters of Clinical Linguistics at the University of Potsdam, Germany.
Willem has an interest in acquired language disorders (Aphasiology), Psycholinguistics (including bilingualism), and Research Methodology in the BSpPath, the MSSP, and the MAUD. He also supervises a number of graduate and postgraduate research students (PhD) undertaking research in areas such as Auditory Processing Disorder (APD), Dyslexia, Autism, Conversational management strategies and repair in individuals with acquired hearing impairment, and Partner-training in conversational techniques in severe aphasia.
Willem can be consulted for research methods, including research design and data analysis (statistics), and the assessment and diagnosis of (bilingual) aphasia and dementia.
(working title) The feasibility and effectiveness of the Aphasia LIFT-program in a subacute rehab setting.
(co-supervisor Dr Sebastian Doeltgen)
(working title) The role of pupillometry in measuring cognitive effort during auditory perception.
(as adjunct-supervisor; principal supervisor Dr Sarosh Kapadia)
(working title) The role of gesture in interaction involving adults with acquired hearing impairment.
(as adjunct-supervisor; principal supervisor Dr Christopher Lind)
The use of packaged video modelling and video self-modelling techniques to facilitate conversational interactions for adolescents with autism, who use AAC
(co-supervisors Dr Parimala (Pammi) Raghavendra and Dr Julie McMillan)
(PhD awarded 2017)
The effectiveness of auditory training and phonological awareness in children with Auditory Processing Disorder (APD)
(co-supervisors Dr Christopher Lind and Dr Sarosh Kapadia)
(PhD awarded 2014)
Phonological processing in children with Auditory Processing Disorder (APD) and Dyslexia
(co-supervisor Prof Phillip Slee)
(PhD awarded 2012)
Conversational Partner training in severe aphasia
(co-supervisor Dr Ingrid Scholten)
(PhD awarded 2012)
Language and reading abilities in students diagnosed with Auditory Processing Disorder (APD)
(co-supervisor Ass Prof Linnett Sanchez)
(PhD awarded 2011)
Noun and verb processing in Greek-English speaking individuals with and without aphasia
(PhD awarded 2004)
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