No subject area
The Ponzo Illusion affects movement characteristics in memory guided target aiming movements (with Matthew Isaac), 15th International Graphonomics Society Conference (2011)
When performing aiming movements we are typically accurate even when features of a target or...
A comparison between phonological and semantic similarity: when SMELL helps BELL and ODOUR (with F J. Hunt), 25th Annual British Psychological Society Cognitive Section Conference (2008)
Category order effects: synonym and category members in mixed lists using backward and forward recall (with F J. Hunt), 25th Annual British Psychological Society Cognitive Section Conference (2008)
Spiral drawing performance as an indicator of fine motor function in people with multiple sclerosis (with Richard A. Heath), Human Movement Science (2006)
This study investigated spiral drawing performance as an indicator of fine motor function, as well...
Movement precues in planning and execution of aiming movements in Parkinson's disease (with Berta C. Leis, Miya K. Rand, Arend WA Van Gemmert, Jau S. Lou, and George E. Stelmach), Experimental Neurology (2005)
Two experiments tested how changing a planned movement affects movement initiation and execution in idiopathic...
Spiral drawing as an indicator of fine motor function in patients with Multiple Sclerosis (with Richard A. Heath), Proceedings of the 12th Biennial Conference of the International Graphonomics Society (2005)
Differential effects of target features such as height and width on the performance of goal directed movements (with Michael J. Bohan and George E. Stelmach), Proceedings of the Motor Control: Trends and Perspectives Symposium (2004)
The motor control of handwriting and its breakdown in neurological disorders such as Parkinsons disease and Multiple Sclerosis, Proceedings of the Autumn Conference of the Forensic Science Society (2004)
Differential effects of target height and width on 2D pointing movement duration and kinematics (with Michael J. Bohan, Arend WA Van Gemmert, Miya K. Rand, and George E. Stelmach), Motor Control (2003)
This study examined the impact of target geometry on the trajectories of rapid pointing movements....
Discrete and dynamic scaling of the size of continuous graphic movements of parkinsonian patients and elderly controls (with Padma R. Mahant, Mark A. Stacy, Arend WA Van Gemmert, Berta C. Leis, and George E. Stelmach), Journal of Neurology Neurosurgery and Psychiatry (2003)
Objectives: To systematically investigate the ability of Parkinson's disease patients to discretely and dynamically scale...
The influence of motor system degradation on the control of handwriting movements: a dynamical systems analysis (with Richard A. Heath), Human Movement Science (2003)
The complex dynamics of the human hand/arm system need to be precisely controlled to produce...
Prior knowledge and exemplar similarity in category learning: further evidence for their integration (with Brett K. Hayes and John E. Taplin), European Journal of Cognitive Psychology (2002)
Two experiments sought to test the theory that the effects of prior knowledge on category...
Continuously scaling a continuous movement: Parkinsonian patients choose a smaller scaling ratio and produce more variable movements compared to elderly controls (with Padma R. Mahant, Mark A. Stacy, Arend WA Gemmert, Berta C. Leis, and George E. Stelmach), Proceedings of the 10th Biennial Conference of the International Graphonomics Society (2001)
Discretely scaling a continuous movement: Parkinsons disease patients have more variable movement trajectories (with Padma R. Mahant, Mark A. Stacy, Arend WA Van Gemmert, Berta C. Leis, and George E. Stelmach), Society for Neuroscience Abstracts (2001)
Research suggests that Parkinson's Disease (PD) patients have difficulty scaling the magnitude of their movements....
Movement precues in planning and execution of arm movement in Parkinson's disease (with Berta C. Leis, Arend WA Van Gemmert, Miya K. Rand, Padma R. Mahant, H L. Teulings, and George E. Stelmach), Society for Neuroscience Abstracts (2001)
The restructuring of planning processes during movement initiation and execution in 7 persons with Parkinson's...
Response-time dynamics: evidence for linear and low-dimensional nonlinear structure in human choice sequences (with Alice A. Kelly, Andrew Heathcote, and Richard A. Heath), Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology (2001)
Response time (RT) is a commonly used measure of cognitive performance, which is usually characterized...
The effects of target shape on movement duration and kinematics for younger and older adults (with Michael J. Bohan, Arend WA Van Gemmert, Miya K. Rand, and George E. Stelmach), Proceedings of the 6th Annual International Conference on Industrial Engineering Theory, Applications, and Practice (2001)
A theoretical and empirical investigation of the performance and clinical diagnostic value of handwriting and other graphic skills, PhD thesis, University of Newcastle, Newcastle, NSW (2000)
Detecting nonlinearity in psychological data: techniques and applications (with Richard A. Heath and Alice A. Kelly), Behavior Research Methods, Instruments and Computers (2000)
Modem graphical and computational techniques for detecting nonlinearity in psychological data sets are presented. These...
The influence of tremor on handwriting performance under conditions of low and intermediate physical stress (with Richard A. Heath), Journal of Forensic Document Examination (2000)
This study used a temporally sensitive technique (coherency analysis) to examine individual differences in handwriting...
A nonlinear analysis of the temporal characteristics of handwriting (with Richard A. Heath), Human Movement Science (1999)
Motor skills provide us with an almost infinite variety of ways in which we can...
Is handwriting chaotic? A tentative nonlinear dynamic analysis of handwriting (with Richard A. Heath), Dynamical Cognitive Science: Proceedings of the Fourth Australasian Cognitive Science Conference (1999)
Measuring cognitive dynamics using nonlinear systems theory (with Richard A. Heath), Dynamical Cognitive Science: Proceedings of the Fourth Australasian Cognitive Science Conference (1999)
Tremor and its effect on handwriting performance under conditions of low and intermediate physical stress (with Richard A. Heath), Proceedings of the 9th Biennial Conference of the International Graphonomics Society (1999)
Individual differences in the graphic skills of people with and without Multiple Sclerosis: empirical results and potential clinical applications, Proceedings of the Faculty of Science and Mathematics Postgraduate Students Conference (1998)
A theoretical and empirical investigation of the development, use and clinical diagnostic value of psychomotor skills, Proceedings of the Faculty of Science and Mathematics Postgraduate Students Conference (1997)
Space-time invariance in adult handwriting (1997) (with Richard A. Heath), Acta Psychologica (1997)
Handwriting quality is commonly evaluated off-line using either subjective or pattern recognition techniques based on...
Contextual effects on prior knowledge use in category learning: the effects of simultaneous and sequential presentation (with Brett K. Hayes and John E. Taplin), Australian Journal of Psychology (1996)
Space-time invariance in adult handwriting (with Richard A. Heath), Australian Journal of Psychology (1995)
Space-time invariance in adult handwriting (Thesis), Honours thesis, University of Newcastle, Newcastle, NSW (1994)