Wednesday, December 16, 2009

Introduction:

Should include the following:

(a) Introduction of the research done by Pavlov (classical conditioning)
(b) Introduction of the research done by B.F. Skinner (operant conditioning, shaping)
(c) Discussion of your purpose and hypotheses (one hypothesis [if...then...] for each phase of the experiment)

Use the following as references:
B.F. Skinner
Pavlov

Monday, December 14, 2009

HW: By the beginning of class on Tuesday you should have completed the bar press training phase of the experiment and written up the procedure section for this phase.
Shaping Instructions:

1. Open file and use Save As to rename your file to save it as a different version (so you don't lose your magazine training progress if something goes wrong).

2. Display the Operant Associations mind window.

3. Go to Windows, then Cumulative Record, to display the cumulative record, which will graph Sniffy's progress during this portion of the experiment.

4. Select the Design Operant Conditioning Experiment command from the Experiment window.

5. In the dialog box that appears, select Bar Press from the Target Behavior section of the drop-down menu under Reinforcement Action. Click OK to close dialog box.

6. Note that the terms CRF and Bar Pressing appear in the cumulative record. CRF stands for continuous reinforcement, which means the program will automatically reinforce every bar press with a food pellet. The Bar Press notation means that the graph will record bar presses.

7. As your first step in shaping, give Sniffy a pellet of food when he rears up facing the back wall (the wall with the hopper) anywhere in the operant chamber.

8. Once Sniffy has begun rearing toward the back wall more frequently, gradually require him to rear closer and closer to the wall, ultimately only rewarding him when he rears with his front paws touching the wall.

9. Whenever Sniffy rears directly in front of the bar, there is a chance that he may press it. If he does, he will hear the magazine sound, receive a food pellet, and the bar-sound association will begin to develop. You will be watching the bar graph to see when the Bar-Sound and Action Strength bars indicate learning.

10. When the Bar-Sound column reaches 1/4 height, the Lab Assistant will give a message. Note the time at this point in the training.

11. Each time Sniffy presses the bar, watch closely what he does after eating the food pellet. He may press the bar again immediately, which means he is making progress. Allow him to continue pressing the bar as long as he will do so. However, if he rears more than twice without pressing again, continue reinforcing the rearing behavior, as he has not learned the bar press fully.

12. If you are patient, Sniffy will eventually press the bar 8 to 10 times in rapid succession. Note the time here. You may now stop shaping and allow the CRF program to do the work as Sniffy continues to bar press more and more frequently.

13. Sniffy's training is complete when the Lab Assistant indicates as such. Note final time and save the file.

Wednesday, December 9, 2009

HW: If you haven't already, finish the magazine training. Complete the Participants, Materials and Procedure sections of the lab report for Friday.

Tuesday, December 8, 2009

Magazine Training: A classical conditioning procedure to create an association between the sound of the food pellet falling into the hopper and the reinforcing properties of the food itself.

Note: You will need to describe this process in your lab report. Take notes to indicate how long it takes you to reach the 1/4 association, the 1/2 association, and the 3/4 association mark. Jot down any other notes about Sniffy's behavior that you can use in your description later.

1. Start with a new Sniffy file.

2. Use the Save As command in the File menu to save the file under an appropriate name (ex. MagTrain) in the Sniffy Files folder.

3. Display the Operant Associations mind window by selecting it from the Mind Windows section of the Windows menu.

4. Note the Lab Assistant says "If you wish to issue a reinforcement, press the space bar or click on the bar."

5. Wait until Sniffy closely approaches the food hopper. Then deliver a food pellet.

6. To save time at the start, you may want to give Sniffy several pellets in rapid succession before he wanders away from the hopper.

7. After Sniffy has received several pellets, you can let him wander away a short distance before giving him the next pellet.

8. Keep an eye on the Operant Associations mind window. When the height of the sound-food bar reaches about one quarter of the way up the scale, you will receive a message that Sniffy is beginning to develop an association. Follow the Lab Assistant's advice and continue to reinforce Sniffy when he is near the hopper.

9. When the height of the sound-food bar reaches about three quarters of the way up the scale, the Lab Assistant will alert you that the association is strong enough to use as a reinforcer for shaping. Magazine training is now complete.

10. Save the file in order to save Sniffy's progress.

Thursday, December 3, 2009

HW: After watching the Phyllis' Wedding episode, complete the following assignment. Your responses should be written, in sentences, and they will be collected on Monday.

Jim subjects Dwight to an experiment in classical conditioning. Describe what each of the following means in general and then explain how the terms pertain to the experiment.

1. Unconditioned Stimulus
2. Unconditioned Response
3. Neutral Stimulus
4. Conditioned Stimulus
5. Conditioned Response