— 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.

What long-term memory actually means

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

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

Relationship to IQ

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

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

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.