Which type of intelligence involves solving problems by manipulating information in the mind?

• A. Crystallized Intelligence
• B. Abstract Reasoning
• C. Working Memory
• D. Fluid Intelligence

Answer: (D)

Fluid intelligence captures the ability to reason and solve problems in new, unfamiliar situations by manipulating information in your mind. When you face a puzzle or a problem you haven’t seen before, you rely on mental operations—holding ideas, testing patterns, and transforming representations—to reach a solution. This contrasts with crystallized intelligence, which is about knowledge and skills you’ve already learned, and with working memory, which is the mental workspace that temporarily stores and handles information as you think. Abstract reasoning is a component within fluid intelligence, but the broader label that describes solving novel problems through mental manipulation is fluid intelligence.