Baby Alec continues to fuss for over 5 minutes when his brother takes away a toy that he enjoys playing with. This can be used as evidence that Alec has developed
A) disequilibrium.
B) equilibrium.
C) adaptation.
D) object permanence.

Question

Quizplus · Accepted Answer

Alec's fussing over the toy being taken away indicates he understands the toy still exists even though he can no longer see it, which is a sign of object permanence. This is a cognitive development milestone where infants recognize that objects continue to exist even when they are out of sight.

Baby Alec Continues to Fuss for Over 5 Minutes When