Children who are promised a payoff for playing with an interesting toy have later been observed to play with the toy less than those who are not promised the reward. this provides enhancement for the role of in operant behavior.

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.”