N.G.
I read a book when my son was 18 mos (he is now 2)that blew my mind away. It is called- The Happiest Toddler on the Block: The New Way to Stop the Daily Battle of Wills and Raise a Secure and Well-Behaved One- to Four-Year-Old
by Harvey Karp (Author), Paula Spencer (Author)
It has some really neat ideas about why the way you are attempting to communicate with your youngsters it not working. I don't live by the practice, but I use it when I am really desperate and it really works. The premise is that toddlers are like little cave people that speak in short to the point repetitive phrases. If you picture it you can kinda see it. Anyway, I was out to eat with some friends that don't have children. They were visiting from out of the country, so our lunch had gone on a bit long and my little one was getting bored. He started really belting it out when I whispered into his ear in neanderthal language that I understood why he was upset and offered him something else to do. (You can only make the offer of something else after they acknowledge that they know you understand why they are upset to begin with. To make a long story short he went from screaming to coloring in about 30 seconds and my friends were amazed. I felt good too, knowing that we both avoided a major stress out session.
I know this is a bit wordy, but this book really helped me. They also have a DVD. This might be more helpful because they stress that facial expression and body language play a major roll in the process.
Hope this helps
N.