The origins of joint visual attention in infants.
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TL;DR
Joint visual attention does not reliably appear prior to 10 months of age, a gaze-following response can be learned, and simple learning is not sufficient as the mechanism through which joint attention cues acquire their signal value.
Abstract
Two experiments examined the origins of joint visual attention with a training procedure. In Experiment 1, infants aged 6-11 months were tested for a gaze-following (joint visual attention) response under feedback and no feedback conditions. In Experiment 2, infants 8-9 months received feedback for either following the experimenter's gaze (natural group) or looking to the opposite side (unnatural group). Results of the 2 experiments indicate that (a) joint visual attention does not reliably appear prior to 10 months of age, (b) from about 8 months of age, a gaze-following response can be learned, and (c) simple learning is not sufficient as the mechanism through which joint attention cues acquire their signal value.