When to get concerned?

Ruby- I would not be worried about Maxim right now, keep an eye on him, but really I would not worry. Have you done any signing with him? Some kids pick up on that faster. My friends little girl had very few words at 18 months, but over 100 signs or something. I have another friend who's little boy is just really starting to talk now, and he's almost 2.5. He has started to talk though, so it's not like he's not capable or anything. I have a few neighbors raising bilingual kids, and all of them seem to be developing language a little slower. I would wait till he's two to worry about it, I bet you'll be surprised by how much he changes by then.

As far as one on one time with your kids goes, I totally could have written what you wrote Adrienne. I rarely spend tons of time just "playing" with James and he is very verbal. He speaks in complete sentences with pretty good grammar, and he's not even 2.5 yet. I think all kids are just so different, and there's not a whole lot you can do that will effect these early milestones. Some kids learn from TV, some don't, some crave lots of one on one play, some are better at playing on their own, as long as what you're doing is within reason, I don't think you need to stress over whether or not you spend hours each day working on their language development. David started walking at 8 months, but it's not like I was making him practice for hours every day and that's why he did it, that was just when he hit that particular milestone.

Also, Ruby, I never really worked with James very much on his body, and he still somehow managed to figure them all out :-)

Ruby- I agree with the others, and Honestly I wouldn't be concerned yet.

Fede is 5 months older than Maxim and he still doesn't "talk", and he sin't even bilingual!!. He only has between 5 and 10 words!! I'm mildly worried about it, but on the other had, he has tons of sounds for things (for example, he makes a clearly different, and extremely accurate sound for the lawnmower and the trimmer), points at all the correct body parts when we name them, he obviously understands EVERYTHING we say to him, etc... So I'm taking it easy for now.