I very intersting read Kerry!
I don't think its saying bttl fed babies are dumb (sorry to take your excuse away

) rather saying that BF can increase whatever your childs natural ability is....at least that the way i can take it.
And it could be attributed to a million different things.....the bonding with mother making them feel secure and comfortable therefore more confident within themselves. of the DHA in the milk who knows......but very interetsing read thanks for sharing again