Resources

http://www.livestrong.com/article/267089-disadvantages-of-baby-sign-language/

http://www.livestrong.com/article/179812-sign-language-its-effects-on-language-development-in-infants-toddlers/

http://www.babysignlanguage.com/basics/faqs/

https://www.babysigns.com/index.cfm?id=64

http://www.uwo.ca/fhs/csd/ebp/reviews/2006-07/Paling.pdf