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"Scientists who scanned the brains of men convicted of murder, rape and violent assaults have found the strongest evidence yet that psychopaths have structural abnormalities in their brains. The researchers, based at King's College London's Institute of Psychiatry, said the differences in psychopaths' brains mark them out even from other violent criminals with anti-social personality disorders (ASPD), and from healthy non-offenders. Nigel Blackwood, who led the study, said the ability to use brain scans to identify and diagnose this sub-group of violent criminals has important implications for treatment. The study showed that psychopaths , who are characterised by a lack of empathy, had less grey matter in the areas of the brain important for understanding other peoples' emotions. While cognitive and behavourial treatments may benefit people with anti-social personality disorders, the same approach may not work for psychopaths with brain damage, Blackwood said. "To get a clear idea of which treatments are working, you've got to clearly define what people are like going into the treatment programmes," he said in a telephone interview. Essi Viding a professor in the psychology and language sciences department of University College London, who was not involved in Blackwood's study, said it provided "weighty new evidence" about the importance of distinguishing psychopathic from non-psychopathic people rather than grouping them together. The findings also have implications for the justice system, because linking psychopathy to brain function raises the prospect of arguing a defence of insanity. Interest in what goes on inside the heads of violent criminals has been sharpened by the trial of Anders Behring Breivik, the Norwegian who massacred 77 people last July. Two court-appointed psychiatric teams who examined Breivik came to opposite conclusions about his mental health. The killer himself has railed being called insane."

We humans are such complex beasts. Why is it that we can be so wonderful and yet so awful, eccentric and prosaic, enigmatic and obvious, witty and dull, and all of these at once? All in the Mind, presented by Natasha Mitchell, is Radio National's weekly foray into all things mental - a program about the mind, brain and behaviour. From dreaming to depression, addiction to artificial intelligence, consciousness to coma, psychoanalysis to psychopathy, free will to forgetting - All in the Mind explores the human condition through the mind's eye. Our mental machinery remains one of the greatest mysteries of this or any other age, performing for us the most incredible feats of perception, cognition and coordination. Scientists, theologians, philosophers and armchair psychologists alike have long debated its form and function. And yet, the mind, in all its madness and brilliance, continues to elude us. All in the Mind brings together unexpected voices, themes and ideas and engages with both leading thinkers and personal stories. Psychology and human behaviour are only part of the equation. The program's scope is considerably broader and explores themes in science, religion, health, philosophy, education, history and pop culture, with the mind as the key focus.

"Psychopathic killers are the basis for some must-watch TV, but what really makes them tick? Neuroscientist Jim Fallon talks about brain scans and genetic analysis that may uncover the rotten wiring in the nature (and nurture) of murderers. In a too-strange-for-fiction twist, he shares a fascinating family history that makes his work chillingly personal."