Wednesday, January 12, 2011

Social before Birth: Twins First Interact with Each Other as Fetuses: Scientific American

Social before Birth: Twins First Interact with Each Other as Fetuses: Scientific American:

Peas and Carrots Blake and Amelia Dancing

Researchers at the University of Turin and the University of Parma in Italy used ultrasonography, a technique for imaging internal body structures, to track the motion of five pairs of twin fetuses in daily 20-minute sessions. As published in the October PLoS ONE, the scientists found that fetuses begin reaching toward their neighbors by the 14th week of gestation. Over the following weeks they reduced the num­ber of movements toward themselves and instead reached more frequently toward their counterparts. By the 18th week they spent more time contacting their partners than themselves or the walls of the uterus. Almost 30 percent of their movements were directed toward their prenatal companions. These movements, such as stroking the head or back, lasted longer and were more accurate than self-directed actions, such as touching their own eyes or mouth.
Related: my 4-year-old daughter told us the other night that she loves her twin brother and that she is lucky because she will always have "my Blakey" so she'll never be alone.

Let's see how this dynamic persists into through the teen years ...

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