Adaptation in gesture: Converging hands or converging minds?

► We studied the processes underlying adaptation in co-speech hand gestures. ► Iconic gestures are adapted to only if they are congruent with speech. ► Only those features of a gesture that match a conceptualization are adapted to. ► Non-matching features are not copied, but changed to fit the conceptualization. ► Adaptation at the conceptual level may drive adaptation in representational gestures.