
Thanks Jean..
I too have seen great trainers work without using food to lure or reinforce - I can and do do the same with some of my own dogs too - but to categorically state someone does not use food rewards EVER, no matter what the dog or what the situation...
That to me is worrying - I don't know how many times I can say this, I think you don't WANT to hear what I am really saying perhaps. At best they are potentially making the job harder for both them and the dog, at worst, their training may well not work at all, and thats before we even get into the realms of 'are they using other less pleasant methods'.
My main interest and 'job' is behaviour rather than training (though training is fun, interesting and useful and I am perfectly capable of it, its behaviour that really lights my fire).
The use of food rewards in particular is very interesting - it can tell you a LOT about a dog to begin with. A dog who takes food in the house but refuses that same food outside.. that tells me something. A dog who would sell his grandmother for a piece of cheese in the garden, but wouldn't even acknowledge the existance of half a pound of cheddar out on the pavement.. thats useful information.
You can get the same information from other rewards, but starting out with any new dog, food is the obvious first thing to try as most dogs like food, particularly smelly, strong tasting food, I personally think it is extremely foolish to NOT consider using it when it may be the best motivator for that dog.
When I deal with any new dog, I like to see their response to a range of potential rewards, and the stock things to try first are cheese, liver cake, hotdog sausage and roast chicken, and then toys, squeaky toys, tuggy toys, furry toys, balls, and then fuss/praise (though you can usually figure that out in the first half hour anyway without specifically trying).
Since I mainly deal with fearful dogs, and regularly its fearful rescue dogs with unknown backgrounds/histories it is important to find out what floats their boat and how much value that item has in various locations.
Food is a basic need and stress does something interesting to an animals desire to eat/willingness to eat - it inhibits it. Because of this food rewards can be a better indicator than toys as to how stressed a dog is feeling, some dogs WILL play around with a toy when quite highly stressed, because its an outlet for the 'fiddle about' option (of fight, flight, freeze, fiddle about). So it IS important to 'test' a new dogs reactions to food and toys in a variety of situations to get feedback and find out where the problems really lie and what is the highest priority etc.
Talking specifically about behaviour modification, as I was in my original post to the OP, the use of food there is not a reinforcer in the same way it would be if given after the dog complied with a command - its being used to change the dogs response to the trigger for a reaction, classical conditioning in other words. Noise paired with a 'treat' often enough will end up that noise = treat so noise = good thing.
To change an underlying emotional response as with the OPs dog, you HAVE to use the thing the dog finds most rewarding - and that is highly likely to be food (but it might equally be a squeaky ball or a scrap of rabbit fur on a string), if you attempt to do this using something the dog doesn't find rewarding or can take or leave, the process just won't work.
Human responses to the idea of using food rewards are also very telling, and I do ask people why they don't want to use food rewards.
I can practically guarantee that someone refusing point blank to consider their use ever, will also tell me a dog ought to work for me because he respects me/loves me/thinks I am his master (and that would be nice but again we are talking about behaviour modification here, not training a simple new behaviour in a normal, problem free dog in a normal, relatively distraction free environment!). Nine times out of ten I will also be told that if you use food rewards then the dog will always expect food rewards and won't work for you the day you don't have any, which merely demonstrates a lack of understanding as to how to properly use food rewards in training (and again, glosses over entirely the use of food rewards for behaviour mod. work, which the OP in this case needs!)
At its most basic level, a trainer stating they won't use a certain thing as a reward (and it doesnt really matter which of the common rewards they state they won't use!) suggests very strongly to me that this person is NOT going to listen to the dog they are working with all that well, because the DOG is the one who decides what he or she finds most rewarding, not the human.
As JeanSW has said, I really don't have a 'limited view', I have five dogs who are all quite different and none of them are particularly 'easy' to train (and theres not a collie among them), some work for food, some work for toys, some work for praise, some work for the opportunity to do things they like (chasing stuff).
I do clicker work with those who enjoy it and I don't with those who do not (because not all dogs like clicker training!) - I have even worked out how to get a dog who doesn't care about clicker training, to do it... (he doesn't get any sort of kick out of getting things right or figuring stuff out for himself so free shaping for him was a pointless activity, he just goes to sleep) - I could use slices of steak as a reward and he wouldn't consider it...
I had to think outside of the box and this dog LOVES to steal things - it makes his day if he thinks he has gotten something that he probably shouldn't have had (ie, it was out of reach and not in a dog bowl) - so I started pairing a short (1 minute or less) clicker session wtih me 'accidentally' leaving a dish with a couple of treats in it on the side.. and he would pay attention because if he DID I would suddenl y get an urge to wander off and he would have his chance at stealing the rewards...
Now he WILL do some free shaping and we can do up to six minutes worth in one go now, and he actively enjoys it... because he knows he is liable to have the opportunity to steal at the end (and this is fine with me because I get to teach him some new behaviours, and he gets what he wants too!).
If that doesn't demonstrate an ability to think outside of the box and get a dog onside, I dunno what will really (and no he wouldn't work for toys either!)