Facts about Infantile amnesia
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Preverbal experiences stored during infancy appear to persist as implicit procedural memories rather than explicit autobiographical ones, explaining why adults can retain motor skills learned before age 3 despite amnesia for the learning events themselves.
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Children who experience early language delays show prolonged infantile amnesia extending beyond age 4, suggesting linguistic development directly enables the encoding of retrievable autobiographical memories.
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Infantile amnesia typically ends around age 3.5 to 4 years old, coinciding with when children develop language skills and narrative memory abilities that allow encoding of autobiographical experiences.
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Around age 2, children begin forming memories they can verbally recall, but these narratives become increasingly distorted and unreliable compared to events they actually experienced during infantile amnesia.
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The hippocampus, crucial for forming long-term memories, does not fully mature until around age 3 or 4, which neuroscientists identify as a key biological cause of infantile amnesia.
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Most people retain virtually no autobiographical memories from before age 3 or 4, a phenomenon documented extensively by developmental psychologist Alison Gopnik since the 1980s.