동아사이언스

왼쪽, 오른쪽

과학동아 1992년 04호

became largely ground-dwellers they used the stronger right hand than to crack open nuts. Even now they tend to groom more with the right hand than the left.To me, the most interesting aspect of the handedness problem is that both humans and great apes hold their babies on their left side. This has been said to be evidence of an early bias toward right-handedness, caused by the fact that if ...