Predictors of human rotation.
Summary of "Predictors of human rotation."
Why some humans prefer to rotate clockwise rather than anticlockwise is not well understood. This study aims to identify the predictors of the preferred rotation direction in humans. The variables hypothesised to influence rotation preference include handedness, footedness, sex, brain hemisphere lateralisation, and the Coriolis effect (which results from geospatial location on the Earth). An online questionnaire allowed us to analyse data from 1526 respondents in 97 countries. Factor analysis showed that the direction of rotation should be studied separately for local and global movements. Handedness, footedness, and the item hypothesised to measure brain hemisphere lateralisation are predictors of rotation direction for both global and local movements. Sex is a predictor of the direction of global rotation movements but not local ones, and both sexes tend to rotate clockwise. Geospatial location does not predict the preferred direction of rotation. Our study confirms previous findings concerning the influence of handedness, footedness, and sex on human rotation; our study also provides new insight into the underlying structure of human rotation movements and excludes the Coriolis effect as a predictor of rotation.
Affiliation
a Department of Psychiatry , University of Cambridge , Cambridge , UK.
Journal Details
This article was published in the following journal.
Name: Laterality
ISSN: 1464-0678
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22708777
- DOI: http://dx.doi.org/10.1080/1357650X.2012.662233
Medical and Biotech [MESH] Definitions
Optical Rotation
The rotation of linearly polarized light as it passes through various media.
Torsion Abnormality
An abnormal twisting or rotation of a bodily part or member on its axis.
Rotator Cuff
The musculotendinous sheath formed by the supraspinatus, infraspinatus, subscapularis, and teres minor muscles. These help stabilize the head of the HUMERUS in the glenoid fossa and allow for rotation of the SHOULDER JOINT about its longitudinal axis.
Rotation
Motion of an object in which either one or more points on a line are fixed. It is also the motion of a particle about a fixed point. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Genome, Human
The complete genetic complement contained in the DNA of a set of CHROMOSOMES in a HUMAN. The length of the human genome is about 3 billion base pairs.
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