Kim_MacMillan
Posted : 1/31/2007 10:51:55 AM
The way I see it, anything that discourages the dog from repeating an action is an aversive.
Not necessarily. We have to be careful to differentiate "aversive" from "punishment", because they are not necessarily one and the same.
Aversive, by itself, is simply something an animal dislikes, and will often (not always) work to avoid. Something can be aversive and not be punishing. Something can be aversive and be reinforcing (the use of a choke chain is a classic example - the dog works to avoid the pain from the chain). Many things that people do to dogs can be aversive - yanking on the leash, smacking, scruff shaking, yelling. That does not make them punishing though, as to be a punisher it HAS to decrease the frequency of a behaviour occurring.
Things can be punishing without necessarily being aversive to the dog. If I turn my back to Gaci when she jumps up, that punishes the behaviour of jumping up, but she does not find that aversive. However, if I use the NRM that I used a long time ago (when I thought it was "best" to use them, I don't use NRM's at all anymore as I've learned I don't need to), she finds that VERY aversive, and for her it's actually a punisher - she shuts down totally. I use body blocks to prevent certain behaviours from occurring (my definition of body block is not to physically use my body to move another dog, but rather to position my body in such a way that the behaviour cannot occur......some people use the term body block to mean that they use their body to physically manipulate the dog), but *most* dogs do not find that aversive. However, for another dog an NRM might simply be the meaning for "not now" or "try something else", and for that dog turning your back on it might be very, very aversive.
Which brings alight another topic, and that is - the
dog is the decision maker as to what is aversive or not. What's aversive for one dog is not necessarily aversive for another dog. It's very easy for the handler to make the assumption that something is or is not aversive, but in the end it's the dog that decides that, and you don't know whether or not something is aversive until your dog tells you otherwise. If Gaci did not find NRM's aversive, I may very well have used it much longer than I did, and if she found body blocks to be aversive I would not have used body blocks as a means of communication with her. So we really have to carefully listen to each of our own dogs, to determine what is or is not aversive to them on a dog-to-dog basis.
And we also have to distinguish the term "aversive" on its own, from "aversive conditioning", in which context the animal learns to avoid or a noxious or punishing stimulus.
What your quote is describing "could" fit the bill, but it's too general. For instance, baby gates prevent dogs from being able to chew up the couch, but most dogs don't find baby gates aversive. Body blocks prevent dogs from doing certain behaviours, most dogs don't find them aversive. Extinction in itself discourages the dog from doing a behaviour (it is neither rewarded nor non-rewarded), and it really depends on the dog, and what the dog wants, as to if it's aversive or not.
For instance, rats have been trained do handle some very aversive things in order to obtain food or sex, such as running across an electrified floor to reach the reward (the food or the female mouse). Running across the floor is most certainly aversive to the animal (and one can witness hesitiation in such studies), as it is most certainly painful and well, electrifying, but the reward at the end outweighs the downfall of the aversive, so the animal will accept the aversive in order to obtain what it wants.
Does that make more sense?
Kim MacMillan