Renee Baillargeon XXXXXXXXXXhabituated 3.5- and 4.5-month-old infants to a screen that rotated 180 degrees. She then placed a wooden box directly in the path of the screen, and rotated the screen...

Renee Baillargeon (1987) habituated 3.5- and 4.5-month-old infants to a screen that rotated 180 degrees. She then placed a wooden box directly in the path of the screen, and rotated the screen either until it made contact with the box (a "possible event") or until it passed through the box (an "impossible event"). On the basis of what evidence did Baillargeon conclude the 4.5-month-olds possessed some notion of object permanence?