Psychology I / Psychometric Theories of Intelligence
Practice question · Sort into groups

Sort each ability-plus-age pattern by which intelligence it fits.

Groups: Fluid intelligence (Gf) · Crystallized intelligence (Gc)

Hints
  1. Novel problem-solving that fades with age is fluid; stored knowledge that persists is crystallized.
  2. The key giveaway is whether the ability declines or holds/rises with age.
Show the answer

Fluid intelligence (Gf): Solving an abstract, unfamiliar reasoning puzzle - tends to decline with age, Quickly grasping the rule behind a brand-new pattern

Crystallized intelligence (Gc): A large vocabulary that keeps growing into old age, Rich general knowledge accumulated over decades

Why

Novel, knowledge-independent reasoning that declines with age is fluid; accumulated vocabulary and knowledge that holds or rises is crystallized. The opposite aging trajectories are the sharpest way to tell them apart.

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