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Loss of memory for events that a person experienced prior to some traumatic injury to the brain is called :

  • A.Proactive interference
  • B.Retractive interference
  • C.Anterograde amnesia
  • D.Retrograde amnesia

Answer: D

Loss of memory for events before a brain injury is retrograde amnesia.

Retrograde amnesia affects memories formed before the injury, often most severely those from the period just before it, as when a person cannot remember the accident or the days leading up to it.

Anterograde amnesia is the inability to form new memories after the injury, as in the case of H.M. Proactive interference is old learning disrupting new learning, which is ordinary forgetting rather than amnesia. 'Retractive interference' is not a term in use; the related concept is retroactive interference, where new learning disrupts old.

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