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Hand preference in simultaneous unimanual tasks: a preliminary examination.
1Department of Kinesiology and Physical Education, Wilfrid Laurier University, Waterloo, Ontario, Canada. pbryden@wlu.ca
Brain and Cognition
|May 28, 2002
Summary
People adjust hand use when performing multiple tasks. The non-preferred hand plays a key role in simultaneous unimanual activities, contrary to previous research focusing on preferred hand function.
Area of Science:
- Motor control
- Human factors
- Neuroscience
Background:
- Research on hand dominance often overlooks the non-preferred hand's role.
- Simultaneous unimanual tasks are common in daily life but underexplored.
Purpose of the Study:
- To investigate hand use patterns during concurrent unimanual tasks.
- To determine the influence of task demands on preferred and non-preferred hand utilization.
Main Methods:
- Two experiments were conducted involving a catching task with a secondary writing task.
- A support and reach task requiring bimanual coordination was also examined.
Main Results:
- Preferred hand catching decreased when the preferred hand was occupied.
- Participants used their non-preferred hand for support and preferred hand for reaching, with spatial variations.
- A distinct pattern of hand use emerged for right and left hemispace tasks.
Conclusions:
- Hand use patterns are adaptable based on task demands and hand availability.
- The non-preferred hand has a significant, yet underappreciated, role in complex motor tasks.
- Findings challenge the traditional focus on preferred hand dominance in motor control research.