N.K.
Hi L.,
You have probably read this on every other web page, but each child is going to develop at their own pace. Some two year olds can say 20 words, others are speaking hundreds and hundreds of words. When you say a two year old "doesn't talk" is he or she trying to make or form words and you are simply not understanding them? If there is no vocal activity at all, yes, it would be best to get them checked out. Set up an appointment with your pediatrician, and he/she will probably refer you to a specialist if they feel there is a problem. No matter what, you will have peace of mind if you get your 2 year old checked out (or whomever's child you are talking about if he/she is not your own), and if by chance there is a problem, early detection can help tremendously. Always better to be safe and a check up will ensure there aren't any hearing problems or any early signs leading to autism. Here is a good article on a 2-3 year olds vocabulary: http://parentcenter.babycenter.com/0_developmental-milest...