FIGURE 2.

Spine plots of behavioral responses during the three phases of the ball-rolling task. The majority of children in HR and LR groups demonstrated context appropriate looking behavior by (A) looking immediately at the ball and/or examiner during the Ready phase (just prior to the examiner releasing the ball) and by (B) visually tracking the trajectory of the ball as it slowly rolled across the table toward them during the Set phase. However, the larger light purple area for the HR group in (C) indicates that HR infants were less likely to show a context appropriate motor response; they were more likely to fail to move in anticipation of catching the ball before the ball hit their bodies compared to LR infants.