@Duke:
I agree it is a consequence, but not punishment b/c he has learned the consequence. IMO, the word punishment has a negative connotation, not the same as the word consequence. However, we teach our children and fur kids that for every good or bad action, there is a consequence - good or bad.
For my dogs own safety and enjoyment to run freely and fast as they can on my 1/2 acre lot, the underground fence is a solution. Otherwise, they'd be forever restricted on a leash. I am very happy for all who have a nice tall secure fence and don't have to depend on electrical fencing. It would be my preference.
FYI - With the underground fencing, the electrical frequency is calibrated with distance. If dog doesn't move away from the line, there is shock - Duhhh? I wouldn't know about the shock collar for training purposes.
I just want to reiterate…I am NOT against underground fencing. I have lots of clients that use it successfully, and are very happy with it. I most likely wouldn't use it with my dogs, unless in conjunction with an existing fence.. but not because I think it doesn't work, or is cruel. I think it is the only real option for a lot of people. Remote shock collars and shock fences are very different things in the way that they operate. There is no room for human or operator error with a fence…dog gets too close..zap. No subjectivity, no flexibiltiy, no decision being made by the fence about how close is too close...the consequence is exactly the same every time.
Anyhow...we are just arguing semantics. In learning theory anything that you add to a learning situation which decreases the likelyhood of the behavior occuring again IS called a punishment. So when the dog ignores the beep, and shock is added, and the behavior of ignore the beep decreases....voila, punishment, consequence, whatever.