Answer to Question 1
Answers to the separate parts of the question are as follows:
a. The terminal behavior is an effective tennis swing defined in some concrete, observable fashionfor example, swinging the racket in such a way that it gets the ball over the net and into the opponent's court at least 80 of the time.
b. Assuming that the student is taking tennis lessons voluntarily, an appropriate reinforcer might be praise, feedback, or some other simple stimulus that conveys a job well done. (Any justifiable reinforcer is acceptable here.)
c. Any series of steps that resemble closer and closer approximations to an effective tennis swing is acceptable. A complete response should probably have three steps at a minimum.
d. The teacher should use continuous reinforcement until the terminal behavior has been reached
Answer to Question 2
Answers to the separate parts of the question are as follows:
a. Greg's baseline for completing his assignments without reinforcement is quite low, as he rarely if ever completes them.
b. The desired terminal behavior is doing homework on a regular basis without being prodded.
c. Possible secondary reinforcers include praise, feedback, favorite activities, checkmarks or other tokens that can be traded in for something special, and so on. (Any reasonable secondary reinforcer is acceptable here.)
d. Descriptions of a shaping procedure will vary; the response should describe reinforcing a series of steps that become increasingly more similar to the desired terminal behavior.
e. Extinction can be prevented by continuing to reinforce Greg on an intermittent basis after the terminal behavior has been reached. It can also be prevented by continuing to provide an extrinsic reinforcer until such time as Greg finds studying behavior intrinsically reinforcing.