My 3 year old loves to say "I see a _____" and you can fill in the blank with car, plane, rainbow, etc. Sometimes he will point with his whole arm (not his finger), sometimes he wont point at all, and very rarely he will point with his finger. If I ask him where it is, he will reply "There it is!" and continue to either point with his whole arm or not at all. Is this considered Joint Attention?
Also, If we are reading a book and I ask him to point to certain things, and he does (with his finger), is that also considered Joint Attention? What about when I am reading to him and he interrupts me to point to something and call it's name? Or is he just immitating me?