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 psychology
Developmental psychology is the scientific study of how and why human beings change over the course of their life. Originally concerned with infants and children, the field has expanded to include adolescence, adult development, aging, and the entire lifespan. Developmental psychologists aim to explain how thinking, feeling, and behaviors change throughout life. This field examines change across three major dimensions: physical development, cognitive development, and socioemotional development. Within these three dimensions are a broad range of topics including motor skills, executive functions,
your senses.’ The child's expression of emotions and the intellectual development of the child, it's all so organic and it's all basic to Gestalt therapy. So to me, how could it not be? Even with adults, it begins in childhood. You don't suddenly block your ability to express emotions as an adult. It starts way back. So, it seems to me that it is very essential and organic and obvious that the development of the child is much akin to Gestalt therapy.”