Olivia's into screaming now. When she doesn't get what she wants, she launches into this ear-splitting supersonic scream. So we have been sitting her down and explaining in stern voices that we DO NOT SCREAM at Mommy.
So today, while I had my hands full in the kitchen, Olivia attempted to get on the computer. I said in my stern voice "No! We don't play with Mommy's computer." When she continued to disobey, I repeated myself louder (also known as yelling). Olivia turned calmly to me and said, "We do NOT scream, Mommy!"