Bicycle accidents account for about ____ of all cases of traumatic brain injury

Surveys find that about ________ of prime-time shows contain sexual scenes

Fill in the blank with the appropriate word.

In short-circuiting the contingencies you arrange a reinforcer for desirable behaviors. However, when you fail to engage in the desirable behavior, you:

a. reinforce the undesirable behavior b. allow yourself to have the reinforcer anyway c. withhold the reinforcer until you engage in the desirable behavior d. A and B