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On the left hand of time
1Department of Psychology, University of Central Florida, Orlando, FL 32816, USA. phancock@mail.ucf.edu
The American Journal of Psychology
|August 13, 2011
Summary
This study found that both sex and handedness influence how people perceive brief time intervals. The way participants used their preferred or non-preferred hand to respond differed between males and females, suggesting sex differences in brain lateralization for timing.
Area of Science:
- Cognitive Neuroscience
- Human Psychology
Background:
- Interval timing is crucial for various cognitive functions.
- Understanding factors influencing time perception, such as sex and handedness, is important.
Purpose of the Study:
- To investigate the effects of sex and handedness on the perception of brief time intervals (up to 20 seconds).
- To explore potential sex differences in hemispheric specialization for interval timing control.
Main Methods:
- Screened 1,276 individuals to recruit 16 men and 16 women with high handedness scores.
- Participants estimated four distinct time intervals (1, 3, 7, 20 seconds) using both preferred and non-preferred hands in an empty production task.
- Response presentation order was randomized and yoked across sexes within handedness subgroups.
Main Results:
- Significant effects of handedness and the hand used for response were observed.
- The interaction between handedness and response hand differed between male and female participants.
- These interactive effects suggest distinct patterns of hemispheric involvement in time perception based on sex and handedness.
Conclusions:
- Sex and handedness interact to influence brief interval timing perception.
- Observed differences support a hemispheric account of interval timing control.
- Results indicate potential sex differences in hemispheric specialization for temporal processing.
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