Physiological psychology is, therefore, first of all psychology.
I've always loved science, as far back as I can remember. I was very, very curious about how everything worked: the world, the physical universe, chemistry, law. So it was only natural to be curious about how our mind works.
Most intellectuals today have a phobia of any explanation of the mind that invokes genetics.
From spending my decades thinking about behavior and the biological influences on it, I'm convinced by now free will is what we call the biology that hasn't been discovered yet. It's just another way of stating that we're biological organisms determined by the physical laws of the universe.
Why do people believe that there are dangerous implications of the idea that the mind is a product of the brain, that the brain is organized in part by the genome, and that the genome was shaped by natural selection?
A lot of the differences between people have biologic underpinnings. Now, we have a dogma of egalitarianism. Everyone's the same.
Physiological psychology, on the other hand, is competent to investigate the relations that hold between the processes of the physical and those of the mental life.