I posted this link to this website/chart in another thread but thought I'd post it here too. I know we all have questions about our LO's speech development. Is it normal that my two year old says "tat" for "cat"? My 5 year old still calls it a "wabbit", is that ok?

When kids learn speech, they develop phonological processes, which are just simplifications of adult speech patterns. These processes, such as using a "t" sound for a "k" sound, or dropping sounds from ends of words, are a normal part of development. Speech therapy comes into play when these processes don't disappear by a certain age. So while it's normal for a 4 year old to still call a "lamp" a "wamp", I'd be working on this with a 6/7 year old to try and fix it.

This is a chart from the website Mommy Speech Therapy that shows all the processes that can be apparent in a young child's speech.

http://mommyspeechtherapy.com/wp-content/downloads/forms/phonological_processes.pdf

At any rare, I hope this is helpful to some of you!