According to Piaget, at what age does an infant develop object permanence?

Ida is playing on her play mat one day when she accidentally rolls onto a toy that squeaks. She loves the sound so much that she keeps rolling so the sound continues. Which stage would Piaget say she was in?

a. Coordination of secondary schemes b. Simple reflexes c. Secondary circular reactions d. Primary circular reactions

If an infant has a __________ habituation time, it means he or she will have ________ efficient information-processing abilities and will probably have __________IQ scores later in development, compared to other infants

a. shorter; less; higher b. longer; more; higher c. longer; less; higher d. shorter; more; higher