posted by Myra1 .
could Intelligence and the development of language may be related?
At the extreme lower and higher levels of intelligence, language development will be impeded or facilitated respectively. However, environmental factors also play a key role.
I searched Google under the key words "intelligence 'language development'" to get these possible sources:
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
I hope this helps. Thanks for asking.