蜜芽传媒

If you've ever stuck your tongue at a young baby and watched it copy you back, you've observed early imitation - a key concept in developmental psychology. But is a new study about to overturn what psychology textbooks have been telling us for years? Psychologist Janine Oostenbroek of York University discusses her results with Claudia Hammond.

First broadcast on All in the Mind, 8 June 2016.