I don’t have any experience with this program, but I’ve used the 1 2 3 Magic system to great effect with our toddler (it was recommended to us by our pediatrician). In a nutshell, you simply start counting when something bad is happening, and do it without anger. When you get to three, there is a consequence (typically a timeout, or whatever you deem is appropriate). So:
Son (screaming): NO. I don’t want to turn off the TV!
Me: Ok, that’s 1. Please turn off the TV.
Son (screaming): NO.
Me: Ok, that’s 2.
Son (screaming): NOOOOOO.
Me: OK. That’s 3. Time out…..
It is very simple, and in our house has worked really well. We don’t use it all the time (in fact, we hardly use it) because now even the threat of being “counted” is enough to disabuse my 3 year old son of his bad behavior. The important thing is that all caregivers (parents, grandparents, nannies, etc.) need to be on the same page, and sometimes to share in the “counting”. Also, this needs to be applied consistently and with discipline (i.e. no backing down), especially in the beginning. But, as I mentioned above, after a while it really is like “magic” in that either the threat or simply the initiation of counting “that’s 1” is enough to stop bad behavior.