Tuesday, February 23, 2010

Ability to recognize faces is genetic

Yup. The ability to recognize faces has a high heritability.
The study consisted of 164 identical twins ... and 125 non-identical same-sex twins ... All the participants took the Cambridge Face Memory Test*, which measures ability to learn six faces and then recognise them in novel poses and lighting.
... The correlation for identical twin pairs was 0.70, whereas the correlation for non-identical twins was less than half that, at 0.29.  ...
* An online version of the Cambridge Face Memory Test is available for members of the public to test themselves: http://www.faceblind.org/facetests/index.php
Not surprising. One more thing to add to the list of biologically determined behaviors. (And they also tested general recognition and found it was only weakly related to facial recognition.)

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