Anonymous wrote:What's a reasonable age to expect your child to say "please" when asking for something, instead of "I want X!" Same question for "thank you."
I think a reasonable time to expect please is when your kid can put two words (e.g. up please) together. If they can say "I want X" then they're there.
As far as "thank you", I think that very young kids (e.g. under 2) often take a little time to figure out exactly which actions require a "thank you", so I would expect to remind them or cue them a little longer than for please. I think it's reasonable to expect "thanks" or "thank you" before 2 when prompted, but not spontaneously.