As a parent, the intellectual development of my child is very important to me.
How do you go about improving your child's intellectual development?
The best way is to support them from a physical, emotional, and social standpoint. 
Do genetics have anything to do with intellectual development?
Yep, research shows that developmental changes may be strongly influenced by genetic factors and events during prenatal life!
What are the most critical ages for intellectual development?
Developmental psychologists appear to agree that ages from infancy to around nine years is the most critical time.