schedules of reinforcement 
Answer all questions in the worksheet.
Schedules of Reinforcement
Remember…
If the organism in the scenario KNOWS exactly when a reinforcer is available, the schedule is FIXED.
If the organism in the scenario ISN’T sure when a reinforcer is available (words like: on average, around, in general, etc.) the schedule is VARIABLE.
INTERVAL schedules are based on time
RATIO schedules are based on behavior
Gambit receives a dog treat each time he does his business outside.
Steps to handle this question:
a. Does the subject know for SURE when the reinforcer is available?
Yes/no (circle one) This means the schedule is FIXED / VARIABLE (circle one) 
b. Is the reinforcer available depending on:

a period of time / a certain number of behaviors (circle one) This means the schedule is INTERVAL / RATIO (circle one)
  This schedule is: ______ 
Melody periodically looks at her watch (I mean cell phone) to see how much more time till the end of class which ends at exactly 2:00PM. When the bell rings, she leaves the classroom.
Steps to handle this question:

–Does the subject know for SURE when the reinforcer is available?

Yes/no (circle one) This means the schedule is FIXED / VARIABLE (circle one)

–Is the reinforcer available depending on:
a period of time / a certain number of behaviors (circle one) This means the schedule is INTERVAL / RATIO (circle one)
–This schedule is: _____
In the above scenario, what would you expect to observe of Melody’s time checking behavior as it gets closer to 2:00pm?
Explain your answer to