Awareness of goal-oriented behavior during infancy and early childhood, in human- and non-human primates.

We review the literature surrounding the phylogenetic and developmental emergence of goal-oriented behavior, among human and non-human primates. We define goal-oriented awareness as the ability to perceive goals and perceptions in others. We examine empirical literature involving gaze-following, shared attention, distinguishing between actions and intentions, and the ability to generate and understand communicative cues. We conclude that at least a rudimentary awareness of goal-oriented behavior is present from birth in humans, and in adult great apes. The evidence in other primate species shows phylogenetic differences as well as gaps in the empirical literature.
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