Cattell · Raven
FreeCognitive Power Index
IQ proxy across pattern, spatial, verbal, and numerical reasoning.
20 questions~6 minutesScale: IQ Proxy (75–145)
Sample question
What comes next: 2, 6, 12, 20, 30, ?
A40
B42
C36
D45
Framework
Cattell’s Fluid/Crystallised Intelligence Theory; Raven’s Progressive Matrices methodology.
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