For Children Under 3, please go to the following link and take the Ages & Stages Questionnaires®, Third Edition (ASQ-3™) to screen for any delays. This is a great tool to help understand where your child should be developmentally. Please contact your pediatrician and set up your free screening with Grady Cooney Speech Partners, Ltd. if you have concerns about your special little one.
ASHA is the American Speech-Language Hearing Association. It provides national certification for Speech-Language Pathologists and Audiologist, as well as provides guidlines to determine the difference between typical speech-language and communication development and delays or disorders. Here is a great resource for parents looking for more informaiton.
The Child Development Institute is another trusted resource for parents.
Caroline Bowen, PhD also has excellent information about developmental milestones, norms, and answers to many questions about speech and language disorders.