Educational Psychology / Unit 3 EDP 0224 short lesson, about 20 seconds
What Infants Know Sooner
Captions available
The idea
Later research found that Piaget underestimated infants: object permanence appears around four months, and deferred imitation by nine months.
In practice
Studies using simpler tasks than Piaget's reveal abilities in infants that his own tasks missed.
Where people slip
The finding revises Piaget's timing more than his sequence, which has largely held up.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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