Dose haveing a smaller brain mean your not as smart as someone with a big brain?

Dose having a smaller brain mean your not as smart as someone with a big brain?

Study's show from "Yahoo answers"  That it is true that having a smaller brain means your brain is not as advance with someone with a bigger brain. In my opinion I think that Infants may not be as smart as a person that is 20 years old at birth from what Ive read from the website E how.com

At Birth At the time of birth most of the brain's cells are developed and almost all of the neurons the brain will ever have are present. However, these cells and neurons are not fully connected within the brain and require additional time to form their connections. The brain start gain weight By age 2 the child's brain is about 80% of its adult size at approximately 1,120 grams in males. The brain reaches its maximum weight between age 19 and 21 and then begins to gradually lose small amounts of weight after age 50.

Although the brain reaches its full adult weight by the age of 21 it continues to develop for several years. In fact, a study done by the National Institutes of health found that the region of brain that inhibits risky behavior does not fully form until age 25. This is the final stage of brain development. Even though  the brain is fully develop you should still work out your brain & learn all you can.

http://www.ehow.com/facts_6371486_age-human-brain-fully-developed_.html#ixzz2Q4UALagW