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2.5 Storing Memories

Syllabus
2025
Topic
2.5
Level
—

Learning objectives

2.5A—Explain how memory storage processes retain information in memoryExplain how memory storage processes retain information in memory.• Sensory memory, short-term memory, working memory, and long-term memory are processes that differ in storage duration, capacity, and content.• Storage may be prolonged by rehearsing information over time (maintenance rehearsal). Rehearsing information over time in ways that promote meaning (elaborative rehearsal) helps with memory retention.• Some people demonstrate highly superior autobiographical memory which may indicate that there are biological processes for superior memory storage. Autobiographical memory may also explain why memories connected to our own lives or selves are more memorable.• Storage processes may be negatively affected by physical impairment and developmental limitations, such as amnesia (retrograde and anterograde), Alzheimer’s disease, and infantile amnesia.

What Keeps a Memory Available

Storage retains encoded information over time. Sensory memory, short-term memory, working memory, and long-term memory differ in duration, capacity, and the kind of content they hold or process. The CED requires comparing these dimensions rather than assuming every memory system stores information in the same way.

Rehearsal process What the learner does Storage relationship
Maintenance rehearsal Repeats information over time Prolongs availability through continued rehearsal
Elaborative rehearsal Rehearses by adding meaning and connections Promotes stronger retention

Highly superior autobiographical memory may indicate biological processes that support unusually strong storage. More generally, autobiographical memory helps explain why information connected with one’s own life or self can be especially memorable: self-relevance supplies an organized network of meaning.

Limitation or impairment Storage-related distinction
Retrograde amnesia Loss involving memories from before the impairment
Anterograde amnesia Difficulty forming or storing new memories after the impairment
Alzheimer’s disease Physical impairment that can negatively affect memory storage
Infantile amnesia Developmental limitation involving early-life memories

Repeated exposure is not automatically elaboration. Maintenance rehearsal repeats; elaborative rehearsal connects information with meaning. Also, exceptional autobiographical memory is evidence of possible biological storage processes, not proof that all autobiographical memories are perfectly accurate.