The benefit of clicker training is it is an positive re-enforcement. If they do what they are told they get rewarded. With a lot of repetition, they will listen to your command even if you don't have the clicker or a treat because they anticipate one.
The other training method has to do with negative re-enforcement. Basically, if you didn't do it right there will be consequences. The training is done with a choke collar. I never tried a choke collar so I don't know how well it works. I been told that is it very effective but I've choose not to go that direction.
You will find different instructors has their preference.
My best advice for you is to ask around and get recommendations. Ask to sit in on a class and see which one you like. Talk to the instructors. Ask them which training method they like and why. Check out the instructor. (Some instructors are better than others.) Are you comfortable with him/her?
Instructions are definitely not cheap and who ever you choose to go with should have a problem answering your questions. And if you don't like the way and instructor teach. Don't go with him/her.
Good luck on finding an instructor. If you have any other question, feel free to ask. If I don't know the answer, I will rack my friends brain. ( Several of my friends are obedience instructors.)
p.s. Sorry, Can't help you with your child. I know how to train dogs, I'm clueless about children.
