Allow me to introduce Ralph L. Holloway, Ph.D, physical anthropologist at Columbia University.
Holloway has specialized (among other things) in craniology, producing endocasts of various primate skulls. This turns out to be particularly
interesting when studying skulls of defunct species such as Neanderthals. The endocasts permit Holloway to estimate size, shape, anatomy and to a
certain extent functions of the missing brains.
On the anatomy of the Neanderthal brain in comparison to the modern human brain, (on which Holloway has written and also acted as technical advisor in
a BBC documentary), he states the following:
Measuring the volume of the Neanderthal's brain shows it to be twenty percent bigger than the average for a modern human. First of all it shows
the same kind of cerebral symmetry...The second thing you can tell about it is the shape of the frontal lobe is really absolutely no different than
what you find in the modern homo sapien's. So the prefrontal portions that are supposed to be dealing with very complex cognitive functioning, and so
forth, are thereabout identical between Neanderthals and modern homo sapiens. So this I think should lead to the idea that basically their cognitive
abilities are the same as our own.
www.columbia.edu...
So, a brain just as developed as that of modern human beings, just slightly bigger. As I said earlier in this thread, this does not really prove
anything. But, there is nothing really to contradict this conclusion other than interpretations of 40 000 + years old stone tools.


...you ask for a source to validate my opinion but dont supply a source to back up your own opinion?... 