Researchers have found that breastfed children end up performing better at IQ tests by the age of six as compared to those that were fed with formula milk.
However, the point need to be tempered down a little as the researchers were not able to find whether the better score at IQ tests is a result of the breast milk or from the bonding from breastfeeding.
The research was done in Belarus and nearly 14,000 kids were tested. The researchers found that children who were breastfed exclusively for the first three months scored an average of 5.9 points higher on the IQ tests. In addition, teachers also commented that the breastfed children were rated academically higher in both reading and writing.
Other studies have shown that breastfeeding aids the development of the child. The fatty acids in breast milk are believed to boost intelligence. In addition, the physical and emotional aspects of breastfeeding can aid brain development. The bond between the mother and child is also strengthen and this aids development as well.
For Matthew, my wife breastfed him for the first three months until she had to go back to work. But in the evenings, he was still breastfed til he was about 8 months old. So, we are strong proponents of breastfeeding and would encourage everyone to breastfeed their child if they are able to.
As for whether he is more intelligent, then I’m not able to tell. But he can definitely speak his mind and sometimes even use words that seems to be beyond the vocabulary of a two-year-old. He can also make up his own stories during story time and come up with his own version of songs. However, his motor skills, in terms of holding a pencil to write and colour, is still a little underdeveloped. But he can definitely use a mouse and click on stuff on the computer screen and he’s quite good with the camera as well. 
I guess all children develop in their own way and time.
