Fig 1.
Illustration of the three demonstration types.
a) Joint Observation. Experimenter and Confederate demonstrate tune in synchrony; b) Joint Action. Experimenter plays one part of the tune and scaffolds the child playing the other part in synchrony; c) Bimanual Observation. (Baseline) Experimenter demonstrates tune bimanually.
Fig 2.
Proportion of children pressing two keys in synchrony on their first key press on Trial 1 for each Demonstration Type.
Fig 3.
Mean proportion of Two Key presses out of total presses for each Demonstration Type.