How a parent stimulate cognitive development?

How can a parent stimulate cognitive development? Are there elements in our environment which reduce cognitive development and may initiate a disorder? Babies are equipped to learn at birth. When does imitation begin?

https://www.youtube.com/watch?v=qSRFvE0Z8Wg

Follow the following TED lecture closely and discuss the research findings

https://www.youtube.com/watch?v=BoT7qH_uVNo