Change behavior

2. variable ratio (VR)

3. fixed interval (FI)

4. variable interval (VI)

Note: the examples are randomly ordered, and there are not equal numbers of each schedule of reinforcement.

___ 1. Getting paid $10 for every 20 puzzles solved.

___ 2. Studying for a class that has surprise quizzes.

___ 3. Slot machines are based on this schedule.

___ 4. Speed traps on highways.

___ 5. Selling a product door to door.

___ 6. Getting the clothes out of the dryer once it buzzes.

___ 7. Going up a staircase to reach a landing with a nice view.

___ 8. Doing 20 push-ups to help stay fit.

___ 9. Getting a paycheck at the end of every 2-week pay period.

___ 10. Random drug testing.

___ 11. Getting a strike in bowling.

___ 12. Calling your mechanic to see if your car is fixed.

___ 13. A child screams and cries in the store to get what he wants--sometimes it works.

___ 14. A surfer waiting for the perfect wave to ride in.

___ 15. Angelina gives Brad a kiss after the end of every lap he swims in the pool.