Quoting Squid Kid:" Took DD for her 18m checkup last week. She doesn't talk (She can kinda say "thank you" as "Dah-koo" and ... [snip!] ... for her. ugh.. I don't know what to do, she communicates fine with sign and understands them, why wouldn't they count sign?"
Well Teagan got therapy at 18 months and it's done wonders for her. The reason they won't use signs is because it isn't speech. As in, signs are GREAT for showing they don't have certain issues (autism) but there still is a reason they aren't actually speaking you know?
I wouldn't worry though, Logan is saying less then that. He says Hi, and SOMETIMES it sounds like Mama or Dada, but those are really iffy. No signs at all. However, at the end of the day therapy is really fun for the kids and doesn't hurt at all. It's just like a bit of play.
ETA: The point about speaking I was making was that there are a lot of muscles used for actual verbal speech. There are a ton of reasons a kid might not be speaking, including weak muscles, sensory, coordination, or even issues in learning that cause them trouble with converting thoughts into verbal language. Teagan managed quite a few signs by around 20-24 months and her language took off after those. We did need to make sure that she could learn to put those signs into verbal form or it could have signified problems. I added this because after reading the thread I figured I shoudl explain better what I meant, lol