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Humans can be primed and implicitly trained earlier before they can remember facts or autobiographical events. This is most important in terms of emotional trauma. Adults can generally recall events from 3–4 years old.

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However, some suggest that adults who had traumatic and abusive early childhoods report an offset of childhood amnesia around 5–7 years old. It has been suggested that this is because

stressful experiences can injure memory centers and possibly make it harder to form memories.

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https://blogs.brown.edu/recoveredmemory/scholarly-resources/traumatic-memory/

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