Image via Wikipedia Twin studies are oft used to gauge the role of the genome in behavioral science. A recent report, “Nature versus Nurture in Ventral Visual Cortex: A Functional Magnetic Resonance Imaging Study of Twins” by Polk et al., (DOI) shows that brain activity during early stages of visual processing is more similar in twins vs. unrelated subjects across several object categories such as faces, houses, pseudowords and a control category consisting of -ok- chairs? When the brain activity of identical vs. fraternal twins was examined, the activity associated with faces showed the greatest difference in similarity of activity compared to other categories. Its always fun to speculate about why the genome might weigh-in more heavily when it comes to face processing – certainly an important skill for our primate order.
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Genes 2 Brains 2 Mind 2 Me 
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