In operant conditioning, reinforcing successive approximations of a desired behavior is a procedure called ________

Jeff has recently gotten a divorce. He is having trouble adjusting to his new-found bachelorhood at home, but finds that his performance at work has not changed. In Jeff's case, his performance on the job has NOT been affected by his ______

a. emotions c. need for achievement b. motivation d. primary drives

The rising or lowering of pitch in a child's speech that allows adults to distinguish between questions and statements is called ______

a. cooing c. vocalization b. perseveration d. intonation