Within-subject analysis of each infant’s choice of the helper (black bar) or the hinderer (grey bar) puppet on each of the five trials separated by age group. NighborTyler KohnCarolynn NormandMatthew SchlingerHenry 2017 <p>Each bar segment represents an individual infant’s choice for a single trial. Along the x-axis, participants are ordered chronologically by age, beginning with the youngest participant on the far left.</p>