amnesia occurs when an individual has a memory for some material but cannot recall where he or she encountered it.

Source amnesia occurs when an individual has a memory for some material but cannot recall where he or she encountered it.

Explanation:

Source amnesia is a memory disorder associated with the malfunctioning of explicit memory. This disorder consists of a person being able to recall factual knowledge, but unable to recall contextual elements. In other words, the when, where, or how that knowledge was obtained ends up distorted or completely forgotten.

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she recieved a treatment not thought to be specifically effective in treating her disorder.