Probably not: when infants had a pacifier in their mouths while the experimenter stuck their tongue out, they still imitated him after it was taken out a short time later.

• 大概不是：即使实验者吐舌头的时候婴儿含着奶嘴，如果随后取下奶嘴，婴儿也会跟着吐舌头。