1. Iona Novak, BAppSc, MSc(Hons), is Head of Research, Cerebral Palsy Institute, P.O. Box 184, Brookvale NSW 2100 Sydney, Australia; inovak@tscnsw.org.au. At the time of the study, she was a postgraduate research student at the University of Western Sydney, Sydney, New South Wales, where this study was conducted to meet the requirements of a Master of Science (Honours) degree
2. Anne Cusick, BAppSc, Grad Dip Beh Sc, MA(Psych), MA(Interdisc Stud), PhD, is Professor, College of Science and Health, University of Western Sydney, Sydney, New South Wales
3. Kevin Lowe, MBBS, FRACP, FAFRM, is Head of Rehabilitation, Department of Paediatric Rehabilitation, Sydney Children’s Hospital and University of New South Wales, Sydney