alleryBaillargeon's studies of 3-month-olds challenged Piaget by showing:
ALearning only by reflex
BEarly object knowledge
CA fixed order of stages
DLanguage before thought
Answer & Solution
Correct answer: B. Early object knowledge
1. Renee Baillargeon showed 3-month-olds a board that seemed to pass through a hidden ball.
2. The infants were surprised, as if they expected the ball to still exist and block the board.
3. Piaget had placed such object understanding much later in infancy.
4. The finding suggests infants have early object knowledge, some core knowledge earlier than Piaget proposed.
**Why not the others:** The finding is about early object knowledge; it says nothing about language coming first.
_Source: Wikipedia, "Piaget's theory of cognitive development", section "Challenges to Piagetian stage theory" (revision 1379038101)_
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