“Free Will” is a tough topic in cognitive science. The neuroscience research that goes into answering questions of agency and free will is complicated and can be interpreted in so many ways.
Surely our behaviors are the results of physical processes in the brain, and thus can, every one, ultimately be linked to a neurological root. However, the shape and architecture of such “roots” is shaped by our world, and in the case of personal responsibility and ownership of actions, they’re shaped by our social world. Gazzaniga believes we’re talking about free will the wrong way – ownership of our actions happens in our interactions with others, and is affected by those interactions. Should be an interesting read.