>> i should really differentiate psychopathy from criminality. there are a lot of reasons why individuals engage in different criminal activity. it's a very small percentage of prisoners that are just about 15 to 20% depending on security level. those individuals are the ones that present the highest risk for reoffending. those are the ones that we say have the personality disorders, et cetera. actually, there is an amazingly good treatment programs that have been developed especially with youth that can show upwards of a 50% reduction in violent crime in kids with these traits if you put them in the right type of treatment. the state of wisconsin leads the way in this regard, by the way because they have invested heavily in these types of treatment programs. they have showed these dramatic effects. that gives me faiths that other states, california and hopefully others will adopt these very progressive and positive reinforcement model kind of treatment programs. and they have the power to reduce impulsivity and increase a little bit of empathy t

hopefully, i did giving you a touch of a psychopathy for a nanosecond. how do we study people like him? we can transport him out from the present to the hospital. one of the things my lab does, we built a really nice trailer in new mexico. here is my trailer. i live in a trailer in mexico. [laughter] this trailer has a really nice mri in it. we work with inmates to volunteer force studies and how to make them better. what we have found is that individuals to have those psychopathic traits, only about a third of all inmates will score really high on the straights. they have reduced gray matter density in these areas. this is the same area where that guy had the tumor. these individuals, control and for all the important things, they are all from pretty average environments. extremely different in terms of structure. does this go towards mitigation? how should it be used? how should this information be used to? i use it to dole out treatment. that is how i thought we would kick start this seminar. i am happy to answer any other questions. i did not do this

are so sensitive to individual differences in i.q., in age, in all of these different availables, psychopathy scores, whatever it is, we can develop beautiful pictures of these things. so the question is, how is the legal system going to deal with all of these different, you know, images and other types of things that we can now tell you about your brain and how is that going to change things? so i tend to view, you know, individuals who have brain differences for whatever reason worthy of developing better treatments for them that can help to remediate those problems. as psychologists, we study abnormal behavior. anita shows distribution, most of us in here. you get anybody out here who is externalizing or anyone out here who is internalizing, as a psychologist, we try to bring them back in here so they're more healthy. that's what we study. when you're having problems in your life or any other area, if we can do something, talking to you versus talk therapy or medicine that might help you, what we're trying to do is get everybody back here so we're just kind of more balanced. with respect t

and sigh -- psychopathy. so you've put those three things together and kaboom. the only problem is, this diet pill. how many pills had been distributed in the united states? well, the answer is, hundreds and hundreds and hundreds if not more million of these. what is the evidence that these were a cause of extreme violent behavior? nil. bed-wetting? a green beret, princeton graduate, emergency room physician, never had to deal with bodily fluids? never saw blood? never saw europe? oh, my god. the bed is wet. i think i'll just slaughter my family. the case annoys me. then there was his appearance in the dick cavette show. andle sam shepard and amanda knox seemed complacent. >> don't go on the dick cavette show. >> championed jeffrey's independence for 30 something years which i consider heroic. >> should we take some questions? >> yes, please. >> i was going to ask you a question. i read your book, and i understood at the time they were looking at some further evidence to get him off, jeffrey macdonald off. they were adding -- going to have a hearing -- >> yes. >

. >> we have found a neurological abnormality in the brain that predisposes to violence and psychopathyalso found in boxers. during fetal development as the limb pick regions expand and develop, they compress or fuse the leaflets together. for some people because of mal development, the gap never closes, and gives rise to lack of fear and psychopathic personality who could go and kill, you know, a number of people and maybe not have any sense of shame or remorse or guilt about doing that. >> reporter: another seed of fear is that structure here, the brain of a psychopath. according to his studies, the blue areas shrink in psychopaths and makes the area smaller. this part of the brain is very much involved in fear conditioning. you experience when you are thinking of doing something that's not right and then you get that awful feeling, no, i shouldn't do that. if that's broken, then perhaps an individual is more likely to perpetrate a horrific act like the boston bombings. >> wolf blitzer has more on this story in this interview with dr. san gentleman gupta. >> sanjay is joining us now.

. >> we've found a neurological abnormality in the brain that predisposes to violence and psychopathyso found in boxers. during fetal development as the regions begin to expand and develop they compressor fuse the two leaflets together. for some people the gap never closes. that gives rise to a lack of fear and a psychopathic type personality who could go and ll a number of people and not have any sense of shame or remorse or guilt about doing that. another seat of fear in the brain is this almond shaped stcture called the amygdala. this is the brain of a psychopath and according to his studies the blue areas shrink in psychopaths and it makes the area dramatically smaller. this part of the brain is very much involved in fear conditioning. you experience when you are thinking of doing something that's not rightnd then you get that awful feeling, no, i shouldn't do that. then that individual is more likely to perpetrate a horrific act like boston bombings. >> myriend dr. gupta joins me now. yesterday we reported the arrest of three schoolmates of dzhokhar tsarnaev all three 19 years ol

. >> we've found a neurological abnormality in the brain that predisposes to violence and psychopathyause of maldevelopment of the limbbik system the gap never closes. it gives rise to a lack of fear. a psychopathic-like personality who could go and kill you know a number of people and maybe not have any sense of shame or remorse or guilt about doing that. >> this is the almond shaped structure called the amigdala. this area shrinks in psychopaths and makes this area dramatically smaller. >> this is very much involved in fear conditioning. you experience when you're thinking of doing something, that's not right. and then you get that awful feeling, no i shouldn't do that. if that's broken then perhaps an individual is more likely to perpetrate a horrific act like the boston bombings. >> sanjay's joining us right now. how difficult was it sanjay for the expert to discuss these alleged bombers without actually examining their brains? >> yeah it's -- i mean there is sort of an emerging science quality to this wolf. one thing that raine has looked at a fair amount is serial killers. evide