Adult persistence of head-turning asymmetry
Tuesday, January 23rd, 2007Nature 2003 Feb 13;421(6924):711
A preference in humans for turning the head to the right, rather than to the left, during the final weeks of gestation and for the first six months after birth constitutes one of the earliest examples of behavioural asymmetry and is thought to influence the subsequent development of perceptual and motor preferences by increasing visual orientation to the right side. Here I show that twice as many adults turn their heads to the right as to the left when kissing, indicating that this head-motor bias persists into adulthood.
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I observed kissing couples in public places (international airports, large railway stations, beaches and parks) in the United States, Germany and Turkey. The headturning behaviour of each couple was recorded for a single kiss, with only the first being counted in instances of multiple kissing.
I like this study. It’s creepy, yet decidedly elegant.





