Fig. 1.

Example face-to-face interactions in which gaze plays an important role. a Two musicians learning a song for guitar and mandolin together. Notice how the left person can infer the spatial locus of the right person’s visual attention from his gaze direction. b A meeting among co-workers. Gaze direction is often an important regulator of the flow of conversation in such meetings as a key resource for turn allocation. c An infant engaged in play with her parent and a third person. Following a parent’s gaze direction is thought to be an important learning mechanism. Picture a courtesy of Gijs Holleman, pictures b & c courtesy of Ivar Pel and the YOUth study at Utrecht University