The role of context in "over-imitation": Evidence of movement-based goal inference in young children

Abstract

Children, and adults, often imitate causally unnecessary actions. Three experiments investigated whether such “over-imitation” occurs because these actions are interpreted as performed for the movement’s sake (i.e., having a “movement-based” goal). Experiment 1 (N = 30, 2- to 5-year-olds) replicated previous findings: children imitated actions with no goal more precisely than actions with external goals. Experiment 2 (N = 58, 2- to 5-year-olds) confirmed that the difference between these conditions was not due to the absence/presence of external goals but was also found when actions brought about external goals in a clearly inefficient way. Experiment 3 (N = 36, 3- to 5-year-olds) controlled for the possibility that imitation fidelity was affected by the number of actions and objects present during the demonstration and confirmed that identical actions were imitated more precisely when they appeared more inefficient towards an external goal. Our findings suggest that movement-based goal inference encourages over-imitation.