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Serotonin and Violence
01:00

Serotonin and Violence

Dean Hamer, Director of the Gene Structure and Regulation Unit at the National Cancer Institute, continues his comments about serotonin. Dr. Hamer
Subject: serotonin
Transcript: Serotonin makes the brain feel bad. For some people, this makes them depressed. They feel bad about themselves. For other people, they may feel

Serotonin
00:43

Serotonin

Dean Hamer, Director of the Gene Structure and Regulation Unit at the National Cancer Institute, talks about the chemical serotonin and the role it
Subject: serotonin
Transcript: It turns out that harm avoidance is controlled by a different Brain chemical called serotonin. And serotonin is like the brain's punishment chemical

Breaking Addictions
02:06

Breaking Addictions

Dean Hamer, Director of the Gene Structure and Regulation Unit at the National Cancer Institute, talks about efforts to determine, "...whether or not there is a genetic basis for why some people find it easy to stop smoking, and other people find it...
Subject: serotonin
Transcript: the brain. The other gene that we found involved is the serotonin Transporter gene which is involved in personality Traits like depression and

Violence and Genetics
01:58

Violence and Genetics

Dean Hamer, Director of the Gene Structure and Regulation Unit at the National Cancer Institute, talks about a family in Holland that included multiple individuals who were violent criminals. This behavior prompted scientists to explore possible gen...
Subject: serotonin
Transcript: Scientists had long suspected that chemicals like serotonin Were important for violence because there was this Connection between brain levels of the