Figure 5.

Time-course of looking to the rotating item on trials in which the rotating item changed color (Rotation-Change trials; blue line) and trials in which the item did not change (Rotation-Change No-Change trials; red line) during the time-course analysis window (300 ms before the change onset to the end of the trial) for the 4-month-old (top) and 8.5-month-old (bottom) infants in Experiment 1. The lines represent the mean preference for the location of the rotating item at each 16.67 ms time point before and after the test array appears (indicated by the vertical “Change Onset” line); the shading represents the 95% confidence interval for each time point. Clusters of time points in which infants’ preference was significantly greater than chance (.50; horizontal line bisecting the graph) is indicated by the colored lines at the bottom of each plot; a blue line indicates the time points on Rotation-Change trials in which infants’ preferred the rotating item more than expected by chance, and the red line indicates the time points on Rotation-No-Change trials in which infants preferred the rotating item more than expected by chance. Cluster of time points in which 8.5-month-old infants’ rotation preference preference was significantly greater on Rotation-Change than on Rotation-No-Change trials are indicated by the gray shaded area; at no point did the 4-month-old infants’ preference differ in the two types of trials.