Falck-Ytter, T., Gredebäck, G., & von Hofsten, C. (2006) Infants predict other people's action goals. Nature Neuroscience, 9 (7), 878-879

Do infants come to understand other people's actions through a mirror neuron system that maps an observed action onto motor representations of that action? We demonstrate that a specialized system for action perception guides proactive goal-directed eye movements in 12-month-old but not in 6-month-old infants, providing direct support for this view. The activation of this system requires observing an interaction between the hand of the agent and an object.