My son is a week away from 12 months and he isn't showing any interest in mocking anything. He doesn't clap, wave or when we ask how big he is, won't put his hands up. We have been trying for over a month and he just doesn't pay attention hardly or try. He can 'clap' with two toys in his hands because he loves to bang them together, but won't bring his hands together if they are free of toys. I know all babies do things at different paces, but is there an age where this might be worrisome? TIA!
Re: 12 months, not clapping, waving, or showing how big he is
Long answer: My son wouldn't do any of that either by 12 months except some very minor waving activity. No words, no sign that he would listen to anything I said, no pointing/clapping, despite constantly showing him how. He just turned 15 months yesterday and wow have things changed. He listens (as much as a toddler can listen), follows minor directions, talking more, waving, clapping, pointing, and eating with a spoon. I believe if they aren't starting to do these things between the 15-18 month mark then it becomes more worrisome but at 12 months I wouldnt (even though I did!). Just keep an eye on it for now and still bring it up to his pediatrician but it's probably 100% normal.
There's no way my LO is anywhere close to showing how big he is if you were to ask him. Did not know that was something there were expected to do this young.