Scientists have studied the movement on five pairs of twins in utero and determined that by the 14th week of gestation, the fetuses aim movements at each other. Science magazine reports on the research:
By the 14 th week of gestation, the fetuses began reaching toward their partners, and just 4 weeks later, they spent more time touching their neighbors than themselves or the walls of the uterus. In all, almost 30% of their movements were directed toward their prenatal companions. These movements, such as stroking the head or back, last longer and are more accurate than self-directed movements, such as touching their own eyes or mouths. The findings suggest that twin fetuses are aware of their counterparts in the womb and prefer to interact with them. Or as the authors put it, they’re “wired to be social.”
(Ht: IC reader, Joe)
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