Follow-up research on infant cognitive development suggests that mastery of object permanence __________.

Question

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Further research suggests that mastery of object permanence is a gradual process that becomes increasingly complex with age, rather than a sudden development at a specific age or stage. Piaget's Substage 4 (which occurs between 8 and 12 months) is typically associated with more advanced understanding of object permanence, but it is not a clear-cut milestone that all infants reach at the same time. Therefore, options A and B are incorrect. Option D is also incorrect because recent research suggests that even very young infants are capable of understanding simple object permanence tasks, although their abilities become more sophisticated over time.

Follow-Up Research on Infant Cognitive Development Suggests That Mastery of Object