Quote:
Originally Posted by Chris Noble  From the graphs the mean time for the beep into this "beep" period is ~27 minutes with a standard deviation of 11 minutes. |
My understanding is that it was randomly determined also when the beep periods themselves were going to be.
"These 'beep' times were within a pre-arranged period, between 45 and 90 minutes long. This period commenced 80 minutes to 170 minutes after PS had gone out."
You're making it sound as if the owner came home approximately the same time on every trial, but if you look at the graphs, the beep periods start at quite varying times, at one time 90 minutes into the trial, at another time 140 minutes into the trial, at yet another time 110 minutes into the trial, at another time 160 minutes into the trial, and so on. Almost every time, the peak of Jaytee's waiting behaviour corresponds to the homecoming of the owner, although this waiting behavior rarely lasts more than 5 to 10 minutes.