He categorized them as : spatial ability , numerical ability , word fluency , memory , perceptual speed , verbal comprehension , and inductive reasoning .
Thurstone tested subjects on 56 different abilities ; from his data he established seven primary mental abilities relating to intelligence .
Thurstone categorized them as : spatial ability , numerical ability , word fluency , memory , perceptual speed , verbal comprehension , and inductive reasoning .
Thurstone tested subjects on 56 different abilities ; from his data he established seven primary mental abilities relating to intelligence .