severe in both frontal lobes and may have contributed to his behavioral abnormalities. joining me is dr. ann mckee at boston university where the most important work in this country on this issue is being done. doctor, thank you so much for being with us. first of all, what does stage two cte mean? >> so stage two cte is when the pathology is primarily in the cortex of the brain. this major part of the brain that controls our ability to think clearly, make sound judgments. but it also affects our ability to control our impulses. and when you have frontal lobe pathology, you may have rage behaviors, violent tendencies, depression, impulsivity, all sorts of things. and i think that's what we saw in phillip adams. . >> so with stage two cte, there