What was invented during the late middle ages

regarding theories of intelligence, which of the following statements is false? a. gardner rejects the view that there is a single entity called “intelligence.” b. thurstone felt that a general factor of intelligence is sufficient to assess intelligence. c. spearman believed that intelligence consisted of a general factor and other specific abilities. d. thurstone and his wife, thelma, developed the primary mental abilities test. e. most standard iq tests were developed to measure “g.”