This link is a poster about philosophers’ brains that I presented at the Towards a Science of Consciousness Conference in Tuscon. Use the link to see a full-size PDF that will allow you to zoom ad nauseum without the blurriness—vector graphics are so cool!
We should not be surprised if some of the differences between philosophers views correlate with differences between philosophers’ brains. I list a handful of neurobiological differences that already correlate with philosophical differences among non-philosophers. It’s not obvious what we should glean from the possibility that philosophers’ brains could differ as a function of their views. After all, it might be that studying certain views changes our brain. That would not be surprising or concerning, really. But if it were the other way around — e.g., that structural/functional differences in brains predisposed us towards some views and away from other views — then that might be concerning. What if academic philosophy is just an exercise of post hoc rationalization of the views that philosophers’ brains are predisposed toward? Of course, it’s entirely possible that causation works in both directions. But even that could be concerning because that is compatible with self-reinforcing feedback loops. For instance, perhaps we are neurally predisposed to certain views, so we study those views which further predisposes us toward that view (and away from its alternatives). But these questions are getting ahead of the evidence. Hopefully, the neuroscience of philosophy will provide some answers. Until then, check out the poster to see what questions the research has already answered.