Saturday, March 19, 2016

Still Trying to Shape Penelope...

It has been over a week of shaping Penelope, and frustration is setting in. I feel like I have tried everything that I could think of, and she isn't making very many improvements. She has pressed the bar on accident a couple of times, and it has been the highlight of my time. I thought I had a breakthrough one day when she pressed the bar 14 times. I was ecstatic. However, disappointment returned the next day when she was no longer interested in the bar or the food pellets.

I began reinforcing her any time she was away from the typical corner that she liked to chill in. I think this only confused her, but she did stay away from that corner for a few days. I think she is equally frustrated with me. On a bright note, every time I take her out of the operant box, she climbs up and sits on my shoulder. I then bend over, and she jumps from my shoulder into her cage. If all else fails, I think I have taught my rat how to do a cannonball into her cage. Pretty cool to me.

Here is a list of the schedule she was on and how many reinforcements/bar presses Penelope had in the course of her time training.


Day 1
2/22/16
Shaping 1 Lever
28.40 minutes
2 bar presses
45 reinforcements
Day 2
2/23/16
Shaping 1 Lever
29 minutes
0 bar presses
49 reinforcements
Day 3
2/24/16
Shaping 1 Lever
27.30 minutes
0 bar presses
39 reinforcements
Day 4
2/25/16
Shaping 1 Lever
30 minutes
1 bar press
47 reinforcements
Day 5
2/26/16
Shaping 1 Lever
30 minutes
3 bar presses
40 reinforcements
Day 6
2/29/16
Shaping 1 Lever
30 minutes
0 bar presses
46 reinforcements
Day 7
3/1/16
Shaping 1 Lever
30 minutes
0 bar presses
38 reinforcements
Day 8
3/2/16
Shaping 1 Lever
30 minutes
1 bar press
34 reinforcements
Day 9
3/3/16
Shaping 1 Lever
30 minutes
3 bar presses
43 reinforcements
Day 10
3/4/16
Shaping 1 Lever
30 minutes
0 bar presses
42 reinforcements
Day 11
3/7/16
Shaping 1 Lever
30 minutes
0 bar presses
47 reinforcements
Day 12
3/8/16
Shaping 1 Lever
30 minutes
0 bar presses
55 reinforcements
Day 13
3/9/16
Shaping 1 Lever
30 minutes
4 bar presses
52 reinforcements
Day 14
3/10/16
Shaping 1 Lever
30 minutes
14 bar presses
33 reinforcements
Day 15
3/11/16
Shaping 1 Lever
30 minutes
2 bar presses
36 reinforcements


As you can see, Penelope pressed the bar a total of 30 times in 15 training sessions. I believe that about half of those were accidents in which she had no idea that she was being rewarded for pressing the bar. For this reason, I did not put Penelope through extinction. I did not believe that this was necessary because there was not a learned behavior to extinct. I also do not have any cumulative records because for the most part, there was nothing to record. 

Here is a video of Penelope's typical activities in the operant box.



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