Of course, the last bit, about having brains the size of walnuts is not true. As this article points out immediately,
"Stegosaurus is often said to have had a brain the size of a walnut. This is grossly unfair – it was probably the size of a lime." So, dinos still had pretty small brains, but then, as I've pointed out before, bigger doesn't always mean better (at least not when you're talking about brains).
I am currently a postdoctoral research fellow in Memphis, TN. Though the blog tends to cover a lot of popular psychology, my areas of research include, or have included:brain injury, auditory neurobiology, neuroendocrinology, and developmental neurobiology.