Answer :
When you do not know something because you never put the information into LTM, it is called encoding failure
Encoding Failure is the infrequent inability of the brain to associate a memory. Encoding describes the brain's capacity to temporarily or permanently store and recall events and information. The most frequent causes of failure for this faculty are trauma or substance abuse.
The process of storing information in memory is called encoding . A lot of memory research points to the importance of encoding in subsequent retrieval. To put it another way, successful encoding raises the likelihood of successful retrieval. Retrieval is hampered by inadequate encoding.
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