Older people's capacity to understand the meaning of words does not decline as much as their capacity to engage in abstract reasoning. This best illustrates the stability of

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Crystallized intelligence refers to accumulated knowledge and verbal skills, which tend to increase with age and experience. It is a stable factor that is not highly dependent on abstract reasoning abilities. Therefore, older people's capacity to understand the meaning of words does not decline as much as their capacity to engage in abstract reasoning, supporting the idea of stability in crystallized intelligence.

Older People's Capacity to Understand the Meaning of Words Does