My son Benjamin is now 17.5 months old and transitioning into a full-on toddler. He has words on his lips, stocky legs for running and climbing, and a mouth full of teeth. It doesn't seem that long ago though that he was a squishy chunk of a boy who could do nothing but drool and babble.
My husband and I knew sign language was something we wanted to do with Ben, and we started when he was around five months old. We all know that babies absorb and understand so much more information than we realize. Sometimes (okay, a lot of the time) we felt really silly signing to him while he gazed back with a blank expression. But I knew it was sinking in somewhere and his brain was making the connections long before he had the motor skills to reciprocate the signs. Sign language is such a fabulous and expressive way of communicating before oral language and the ability to articulate speech patterns are developed.
I'm not certain of the conclusive data on the relationship between sign language and increased abilities, but as a former school teacher I truly do believe the word associations and visual connections help with language development far before babies speak their first words. Some studies do suggest that infants and toddlers who use sign language perform higher on IQ tests when they become children. Whether that is true or not, it's still an excellent stepping stone to speech. As with everything, consistency and repetition are key components to success! Ben didn't really starting signing back to us until he was closer to 10-11 months, but some babies do it sooner! We thought for sure we were wasting our time, but the day he signed "more" (directed as his blueberries of course) was so exciting for us. Sign language is obviously a really fun bonding experience for the baby and the parents. Babies love learning everything about their environment!
It's also been really interesting to see the variation of the signs he does. The sign "please" requires taking your hand across your chest in a circular motion, but Ben takes his hand and wipes it across his shirt, with the most hopeful little expression on his face! It doesn't really matter what the official sign actually is, as long as you understand the meaning of the sign your child has adapted.
Sign language can be a lot of work in the beginning, but the investment really pays off as your child gets older.
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