Wilbar
Your question (being unsure if the sensation is motivational enough to change a behaviour) is very common, in fact it was my first reaction to researching into e collars.
My experience is the sensation works because it's consitent and doesn't come from anywhere but the dogs actions.
So to use a cesar milan example if I tsst whenever the dog looked he would realise that was coming from me and view it as unimportant to scary (depending on his association with tsst) Yes he would learn though repitition that I tsst whenever he looked at sheep and would learn to associate that with his behaviour, but he would know that it was me tssting, with the e collar approach he would learn that only looking at sheep gets the sensation and because that sensation just occurs (he looks = sensation) he would look at it as contingent on his own behaviour (I've mis spelled that I bet lol).
The same with training in commands with the e collar, the sensation happens or stops happening in conjunction with his behaviour.
However the real advantage of this approach is it puts the dog in ultimate control, within a very short time he learns he can control the sensation by his actions, even though the sensation is very mild (it's still an aversive but only just) the fact that he can control it means he is more motivated by it than by an equal motivator (treats) whose delivery he can't control because in the caseof treats there coming from you so he knows you ultimatly have control of them. This engages the dog with training very quickly.
Wilbar
The reason it works for sheep chasing is because were not teaching the dog not to chase (I never want that to happen in a session, sheep are too stressy anyway) were teaching the dog not to look at the sheep, this predatory look is the thing that always occurs just before a chase (sometimes for a split second) if you stop this you stop the chase.
It's the same princple as using rewards to deal with a fear issue, You don't plonk a scared dog in the middle of a thunderstorm and offer treats, you play thunder very quietly and offer treats. When dealing with any behaviopur problem you should always be working the dog at a stimulus level that is just below the problem level.
Emma
Abstract
Behavioural effects of the use of a shock collar during guard dog training of German shepherd
dogs were studied. Direct reactions of 32 dogs to 107 shocks showed reactions (
lowering of body
posture, high pitched yelps, barks and squeals, avoidance, redirection aggression, tongue flicking)
that suggest stress or fear and pain. Most of these immediate reactions lasted only a fraction of a
second. The behaviour of 16 dogs that had received shocks in the recent past (S-dogs) was compared
with the behaviour of 15 control dogs that had received similar training but never had received shocks
(C-dogs) in order to investigate possible effects of a longer duration. Only training sessions were used
in which no shocks were delivered and the behaviour of the dogs (position of body, tail and ears,
and stress-, pain- and aggression-related behaviours) was recorded in a way that enabled comparison
between the groups. During free walking on the training grounds S-dogs showed a lower ear posture
and more stress-related behaviours than C-dogs. During obedience training and during manwork (i.e.
excercises with a would-be criminal) the same differences were found. Even a comparison between
the behaviour of C-dogs with that of S-dogs during free walking and obedience exercises in a park
showed similar differences. Differences between the two groups of dogs existed in spite of the fact
that C-dogs also were trained in a fairly harsh way. A comparison between the behaviour during free
walking with that during obedience exercises and manwork, showed that during training more stress
signals were shown and ear positions were lower. The conclusions, therefore are, that being trained
is stressful, that receiving shocks is a painful experience to dogs, and that the S-dogs evidently have
learned that the presence of their owner (or his commands) announces reception of shocks, even
outside of the normal training context. This suggests that the welfare of these shocked dogs is at stake,
at least in the presence of their owner.
My red highlight
These reactions indicate the shock level was too high (see below) no dog during any type of training (e or otherwise) should show thoses reactions as in indicates the dog is experiencing an aversive at more than the level he first percieves it. This in my opinion is crap training.
A. Because that degree of aversive is unneeded and thus unacceptable
B. From a strictly results based approach a high level of any stimulus (nice or nasty) interfers with learning by causing the dog to focuse too much on the stimulus.
CAD
Thanks for correcting the spelling (you couldn't do this post as well? could you)
The dog reacts to the sensation by flicking it's ears and looking at the ground the 1st time.
As soon as it reacts you've found it's level and don't use the sensation again until you train.
Even when finding the level stopping the sensation when the dog reacts show it he can control the sensation.
The guiding comes from the lead (initial training) the collars work by press and hold so the dog feels the sensation while you hold the button. The sequence is
1. Dog looks at sheep
2. Immediatly press and hold button
3. Walk backwards away from sheep or pull backwards on the line.
4. This physically makes the dog step away and break the look.
5. Immediatly release the button.
All this takes 2/3 secs to happen. The look is just that slight predatory glance the dog gives. I'm at the end of watever lead the dog is on so as it glances I press and step back the physical action of the lead causes the head to turn (remember we're at a distance so the dogs just looking not really focused) I release the button.
So if a car goes past the dog won`t experience aversion, but if a sheep does the dog will. Why is this?
Because of the mild sensation the dog isn't spooked or scared, to create a one trial fear association you need a big scary stimulus (this could be a high level shock of course but it isn't). Preferably with something the animal has no previouse associations with (so never seen a car before) If I was to give the dog it's first feel of the collar as a car went by (highly unlikely) I would stop the sensation when the dog looked at the ground and flicked it's ears not if it showed a reaction to the car. When they feel the first sensation of the collar they will generally look at the gropund so won't focuse on anything else.
Quick point. They don't actually look at the ground this is just how it appears. They look down because of the position of the collar on their neck and were they feel the sensation.
BTW I don't like using it as a reference point for a dog just feels a bit disrespectful, but I occasionally fall into it because of the way the language is presented.
Adam