Newborns come into the world wired to socially interact. Is a propensity to socially oriented action already present before birth? Twin pregnancies provide a unique opportunity to investigate the social pre-wiring hypothesis. Although various types of inter-twins contact have been demonstrated starting from the 11th week of gestation, no study has so far investigated the critical question of whether intra-pair contact is the result of motor planning rather than the accidental outcome of spatial proximity.
We conclude that the performance of movements towards the co-twin is not accidental: already starting from the 14th week of gestation twin fetuses execute movements specifically aimed at the co-twin.
Learning Change 