The most important types of cognitive ability tests (also known as aptitude tests) include verbal/language reasoning, abstract/conceptual reasoning.

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Measures of Crystallized Reasoning (Gc) that examine knowledge of word meanings, grammar and language comprehension.

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Measures working memory and fluid intelligence (Gf). Examines the ability to change or switch between different tasks.

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Examines conceptual, strategic thinking and logical reasoning.

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Measures of mental processing speed (Gs). Examines clerical and perceptual speed and checking ability.

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Examines quantitative problem solving ability and numerical aptitude.

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Measures of fluid intelligence (Gf) that examines sequential and spatial type reasoning skills.

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