I don't know enough about it to say it. What I do believe is that (about 70% of) intelligence is determined by will, thoughts, environment and circumstances. If one is willing to learn he/she will become bright Thanks for your comments 3dassets.

I would not give a figure like %, we become intelligent if we learn and analyse, its a self initiated action and better make it a habit. IQ / EQ changes accordingly and we won't be the same person we are today in the future.

I came across a recent journal article that found that :

"...evidence demonstrates that in intelligence, brain size, and other life history traits, East Asians average higher than do Europeans who average higher do South Asians, African Americans, or sub-Saharan Africans. The group differences are between 50 and 80% heritable..." (Rushton & Jensen, 2010)
(The Open Psychology Journal, 2010, 3, 9-13)

Does it mean that East Asians are more intelligent??

It is still a one person's finding, I wonder why African living in Africa are not as intelligent as those in the US / UK, the proof of environmental effect rather than gene factor. The place make people dump, only two types of utensil used on dining table, these are the places that breed smart people at first and now the environment isn't a factor anymore but education, the essential element is understand the ability to think and analyse.

I was dump and hate school then fail all the way to SPM but I feel so much smarter than people around me now because I continue to learn from the environment and practice skill.

Yeah that's because intelligence is mostly defined by the US/UK researchers. . . "hey this is intelligence and we are the smartest among all races" (just joke). In most races, intelligence is about adopting the environment and using practical skills to survive.