Do you find yourself in the middle of a row with your child, or even an adult, getting louder and louder? You start off calm discussing something with your child and the child answers you, only he/she is speaking louder and so you respond by speaking even louder. Before long you are shouting at each other and no one is really listening, the conversation is getting heated and there seems to be no way out.
The next time that happens try this. When you find yourself getting louder and louder, start by gradually speaking softer and when you child responds, reply in an even softer voice and keep this going until you are whispering. It totally diffuses the situation and you have an excellent chance your child will be more co-operative.