Glen Doman Flash Cards

I want to know whether flash cards of glen doman really work for all the children?

I don’t know who “Glen Doman” is but any stressor that causes a preschool age child to get his/her electrical neurons working causes the brain to learn. And the younger the child the more the neurons advance.

Soham (age : 2 years and 5 months) can read a few english and telugu words