Figure 1.

Schematic of procedure. A) Children were familiarized with three novel shapes with or without meaningful labels (one familiarization is depicted), and were asked to pick out each novel shape from a pair of novel shapes. B) Children then were then asked to track a moving target shape (i) as it moved on a random path for approximately 10 seconds among distractors (ii), report where it was when it disappeared (iii), and indicate which shape they were supposed to track (iv).