Which statement has been demonstrated in experiments?
A) Six-month-old infants can recognize their own image in the mirror.
B) Piaget's assertions about the age at which object permanence develops are correct.
C) Three-month-old infants appear surprised if an object vanishes.
D) Object permanence can be acquired earlier with proper training.

Question

Quizplus · Accepted Answer

The statement that three-month-old infants appear surprised if an object vanishes has been demonstrated in experiments, known as the "visual cliff" experiment. This experiment demonstrated that infants as young as three months old have some level of depth perception and understanding of object permanence. The other statements have either been contradicted by later research (A and D) or are theoretical assertions that cannot be definitively proven through experimentation (B).

Which Statement Has Been Demonstrated in Experiments