Before revision: According to Robert Saweikis (2004), If the experimenter moves the mobile showing the infant the movements, as soon as the infant is reconnected to the mobile with a ribbon, the infant will start kicking energetically.
After revision: According to Professor Robert V. Kail and Professor Meghan Saweikis (2004), if the experimenter moves the mobile showing the infant the movements, as soon as the infant is reconnected to the mobile with a ribbon, the infant will start kicking energetically.