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The experimental arrangement used with 6- to 18-month-old infants. (a) Simultaneous preexposure. Shown here is a 6-month-old sitting in front of the two hand puppets (yellow duck and pink rabbit) on the wooden hat stand during SPC (Phase 1). (b) Sequential preexposure. Shown here is a 6-month-old sitting in front of either S1 (pink rabbit) or S2 (yellow duck) during SPC (Phase 1). The interval between puppet presentations varied as a function of experimental group.
