Wow! I love the entire Signing Times series! My daughter is 13 months old now and can sign for most of her needs already. We've had tremendous success with potty training because she can sign for potty when she has to go and it has helped her alert me even though she can't talk yet. A potty trained 13 month old!

She also had really bad bouts of screaming when she couldn't get her way or communicate her needs to us before. She threw tantrums on a daily basis. Since Signing Times she's seems to be much calmer and I can gently remind her to use a sign when she's frustrated instead of screaming. That...