— Cognitive science

Long-term Memory

Term

LTM

Domain

Cognitive psychology

First introduced

20th century

IQ relevance

Direct

Long-term Memory (LTM) refers to indefinite storage; multiple subsystems (episodic, semantic, procedural). The concept is central to modern cognitive psychology and psychometrics — particularly to how IQ is theorized, measured, and interpreted.

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What long-term memory actually means

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In cognitive psychology, long-term memory is operationalized as indefinite storage; multiple subsystems (episodic, semantic, procedural). It is distinct from related constructs in that it specifically captures the temporal and capacity dimensions of information retention.

How it's measured

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Measured through standardized testing batteries and laboratory paradigms specific to the construct.

Relationship to IQ

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Long-term Memory is integrated into the broader theory of IQ and cognitive function. It contributes to and is partially measured by composite IQ scores.

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Why this matters

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Understanding long-term memory is foundational for anyone trying to interpret an IQ score meaningfully. The single composite IQ number conceals significant variation across cognitive functions; understanding the components is how you go from "I scored 130" to "I scored 130, with particular strength in [X] and relative weakness in [Y]."

Frequently asked

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What is long-term memory?

Long-term Memory (LTM) refers to indefinite storage; multiple subsystems (episodic, semantic, procedural). It is a central concept in cognitive psychology and IQ measurement.

How is long-term memory different from general IQ?

Composite IQ is a weighted aggregate of multiple cognitive abilities. Long-term Memory is one specific component or property that contributes to but is not identical to the IQ score.

Can long-term memory be improved?

Generally limited room for improvement in trait-level cognitive properties; significant variability in measured performance day-to-day.

Related concepts