🧠ap psychology review

L.L Thurstone

Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated August 2025

Definition

L.L. Thurstone was an American psychologist who challenged Charles Spearman's view of intelligence as a single factor. He proposed the theory of "primary mental abilities," suggesting that intelligence is composed of seven distinct factors.

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