Primary Mental Abilities:Thurstone's theory that intelligence is composed of seven distinct and independent primary mental abilities, including verbal comprehension, numerical ability, spatial visualization, associative memory, perceptual speed, reasoning, and word fluency.
Multifactorial Theory of Intelligence: Thurstone's view that intelligence is not a single, unitary construct, but rather a collection of distinct mental abilities that can be measured and assessed independently.
Factor Analysis:A statistical technique developed by Thurstone to identify and isolate the underlying factors or dimensions that contribute to overall intelligence, allowing for a more nuanced understanding of cognitive abilities.