Hi there! I am a mom to 20-month twins. I know that different sounds are aquired at different ages and I am pretty familiar with speech and language development because I am a school psychologist. However, one of my twins (K) is very hard to understand. My other two children are pretty clear. My DS, who is 7, was very, very easy to understand. Strangers were even able to understand him when we were out and about. My other twin, S, is really starting to pick up sounds and she is becoming much more clear. K, on the other hand, leaves off most ending sounds. So, ball sounds like /ba/ and up sounds like /uh/. Light is /lie/ (not sure how to make a long a on my keyboard ). Is there anything I can be doing to encourage ending sounds other than repeating what she says and emphasizing those ending sounds? Is this pretty normal for 20-months or should I be seeking an evaluation and some therapy for her?