. >> adrian raine is author of "the anatomy of violence." he's studied cold blooded killer and says there are biological reasons for violence. he's convinced brain dysfunction may in part explain the terror unleashed in boston. >> were they normal people who decided one day, you know what, we want to create mayhem? i don't think so. i think it's more complicated than that. >> when you see all the tragedies that have happened recently with dzhokhar tsarnaev or adam lanza, with your background, experience, what you have learned, what do you look for? what would you advise researchers investigating the cases. >> there is no research on terrorists or mass murderers at a biological level. you can always speculate based on what i have learned about violence that, you know, with the bombings in boston these perpetrators did not have poor frontal lobe functioning. they were able to plan, regulate and control. if i brain scanned them, i don't think we'd see poor frontal functioning. i think what we would see is an impairment, a volume deduction and p

we talked to adrian raines about that as well.ings to point out quickly there is an area of the brain that is sort of the frontal lobe area that is responsible for judgment. that's relevant, jake, because it really doesn't fully develop until someone is in early to mid 20s. here we' talking about people in their late teens. the judgment area may not be fully developed. also the area responsible for emotion and sometimes rational emotion, that is fully developed. you have ta combination now. fueled emotion with less inhibition and, wonder if that could potentially play a role. >> obviously, none of us are excusing what they did. we're just trying to understand this unmitigated evil. you can imagine that the next step to this sort of science is for defense attorneys to grab on to it. the twinkie defense from decades back, people blaming their brain, genetics for a crime they've committed. is there any potential problem with that? do you see that possibly happening? >> this is an emernling science with regard to what we're talking ab

one thing that adrian rains looked at a fair amount is serial killers.e has evidence on terrorists being able to look into the brains of people who commit mass rampage like this. that's harder data to come by. so he's looking for similarities, for example, between serial killers and people who commit terrorism and seeing if there's some commonalities there. so it's not, you know, ironclad by any means, it is an emerging science, but he's the guy sort of trying to investigate this. >> what about the role of genetics, the two tsarnaev brothers obviously related, is there a connection here, genetics and violence if you will? >> you know, when you ask researchers who look at how much of this is biology, how much is environmental, you get back the answer often it is about 50/50. there's 50% maybe related to genetics. you talk about brothers like this, it becomes a germane question. two ways to look at it, one to look at identical twins who may have raised in different circumstances, what are commonalities between them in terms of personality type, potential a

. >> thank you adrian raine. >>> what do you do for a living if your father is one of the most successful and she did just that. we'll talk with her after the break. ,,,,,,,, [ indistinct conversations ] [ pizza dodging man's mouth ] ♪ ♪ [ camera shutter clicks ] [ male announcer ] fight pepperoni heartburn and pepperoni breath fast with tums freshers. concentrated relief that goes to work in seconds and freshens breath. ♪ tum...tum...tum... tum...tums! ♪ tums freshers. fast heartburn relief and minty fresh breath. of candy and her love of fashion which she probably got from her dad, that would be ralph, to create dylan's candy. it features more than 7,000 treats from around the world. good morning. first, what are you wearing? >> ralph lauren. >> me too. >> ain't it great. >> let's thing about this. you're dylan lauren, ralph's favorite daughter. and people say, of course sheerks going to be successful. she's his daughter. she comes from a wealthy family. but you graduated from duke and it took you a hot minute to figure out what you want dodd. you tried for many things like auditions to

. >> thank you adrian raine. >>> what do you do for a living if your father is one of the most successfulhion which she probably got from her dad, that would be ralph, to create dylan's candy. it features more than 7,000 treats from around the world. good morning. first, what are you wearing? >> ralph lauren. >> me too. >> ain't it great. >> let's thing about this. you're dylan lauren ralph's favorite daughter. and people say, of course sheerks going to be successful. she's his daughter. she comes from a wealthy family. but you graduated from duke and it took you a hot minute to figure out what you want dodd. you tried for many things like auditions to be an mtv veejay. >> i had a lot of passions. i wanted to be a backup dancer for janet jackson and be an artist. the real passion that threaded through was candy. >> so when you went to your dad and said you know what i'd like to do his answer was what? >> my dad and mom are big supporters of us being entrepreneurs. they understand that it wasn't just about candy. it was about art and fashion and pop tull kul tur and when i told my dad i wa

. >>> you can learn a lot more from sanjay and his expert adrian raine, this weekend on "sanjay guptaa vampire. but he's not. ♪ ♪ he's an architect with two kids and a mortgage. luckily, he found someone who gave him a fresh perspective on his portfolio. and with some planning and effort, hopefully bob can retire at a more appropriate age. it's not rocket science. it's just common sense. from td ameritrade. you make a great team. it's been that way since the day you met. but your erectile dysfunction - it could be a question of blood flow. cialis tadalafil for daily use helps you be ready anytime the moment's right. you can be more confident in your ability to be ready. and the same cialis is the only daily ed tablet approved to treat ed and symptoms of bph like needing to go frequently or urgently. tell your doctor about all your medical conditions and medications, and ask if your heart is healthy enough for sexual activity. do not take cialis if you take nitrates for chest pain as this may cause an unsafe drop in blood pressure. do not drink alcohol in excess with cialis. side effec