States rethink 'adult time for adult crime' - the Youth Advocacy Division

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What Makes Teens Tick; A flood of hormones, sure. But also a host of struct...plain the behaviors that make adolescence so exciting--and so exasperating CORPUS CALLOSUM PREFRONTAL CORTEX BASAL GANGLIA AMYGDALA CEREBELLUM Thought to be involved in problem solving and creativity, this bundle of nerve fibers connects the left and right hemispheres of the brain. During adolescence, the nerve fibers thicken and process information more and more efficiently The CEO of the brain, also called the area of sober second thought, is the last part of the brain to mature-which may be why teens get into so much trouble. Located just behind the forehead, the prefrontal cortex grows during the preteen years and then shrinks as neural connections are pruned during adolescence Larger in females than in males, this part of the brain acts like a secretary to the prefrontal cortex by helping it prioritize information. The basal ganglia and prefrontal cortex are tightly connected: at nearly the same time, they grow neuron connections and then prune them. This area of the brain is also active in small and large motor movements, so it may be important to expose preteens to music and sports while it is growing This is the emotional center of the brain, home to such primal feelings as fear and rage. In processing emotional information, teens tend to rely more heavily on the amygdala. Adults depend more on the rational prefrontal cortex, a part of the brain that is underdeveloped in teens. That may explain why adolescents often react more impulsively than adults Long thought to play a role in physical coordination, this area may also regulate certain thought processes. More sensitive to environment than to heredity, the cerebellum supports activities of higher learning like mathematics, music and advanced social skills. New research shows that it changes dramatically during adolescence, increasing the number of neurons and the complexity of their connections. The cerebellum is the only part of the brain that continues growing well into the early 20s file:///L|/JDN/Brain%20Resources/Brain%20Developmen...iling%20Packet/8.%20What%20Makes%20Teens%20Tick.htm (7 of 8)8/16/2006 4:44:18 PM
What Makes Teens Tick; A flood of hormones, sure. But also a host of struct...plain the behaviors that make adolescence so exciting--and so exasperating NERVE PROLIFERATION... By age 11 for girls and 12 1/2 for boys, the neurons in the front of the brain have formed thousands of new connections. Over the next few years, most of these links will be pruned ... AND PRUNING Those that are used and reinforcedthe pathways involved in language, for example-will be strengthened, while the ones that aren't used will die out Sources: Dr. Jay Giedd, chief of brain imaging, child psychiatry branch, NIMH; Paul Thompson, Andrew Lee, Kiralee Hayashi and Arthur Toga, UCLA Lab of Neuro Imaging; Nitin Gogtay and Judy Rapoport, child psychiatry branch, NIMH Text by Kristina Dell Home | About DPIC | Privacy Policy ©2006 Death Penalty Information Center file:///L|/JDN/Brain%20Resources/Brain%20Developmen...iling%20Packet/8.%20What%20Makes%20Teens%20Tick.htm (8 of 8)8/16/2006 4:44:18 PM
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Page 5 and 6: New York Times March 11, 2007 The B
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Page 21 and 22: concentration camp or Guantánamo,
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Page 25 and 26: Brain science offers insight to tee
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Page 31 and 32: make us uniquely human are the late
Page 33 and 34: New research shows stark difference
Page 35 and 36: New research shows stark difference
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Page 45 and 46: Teen Brains on Trial: Science News

States rethink 'adult time for adult crime' - the Youth Advocacy Division

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