Dr. cooke wanted to know if a drug was more effective than a placebo. she gave one group the real drug and measured its effectiveness, and gave the other group the placebo and measured its effectiveness. dr. cooke is doing a(n):

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.”