What is james fallon sr?

As an AI language model, my access to personal information about private individuals is limited. I can say that James Fallon Sr. is a retired professor of psychiatry and human behavior at the University of California, Irvine, who has conducted extensive research in the field of neuroscience and psychopathy. His work has contributed significantly to our understanding of the neurobiological and genetic factors that underlie violent and criminal behavior. He is also known for his personal story of discovering, through a brain scan, that he has a psychopathic brain, which he has written about in his book "The Psychopath Inside: A Neuroscientist's Personal Journey into the Dark Side of the Brain."