A brain that can let other thoughts bubble up despite being in pain might help its owner benefit from meditation or other cognitive therapies. iStockphoto.com hide caption

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Student Kahlil Quato fights tears as he speaks at a University of Chicago candlelight vigil in 2007. The service was held in remembrance of Amadou Cisse, a graduate student, who was shot to death at point-blank range. Stacie Freudenberg/AP hide caption

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Therapy Helps Troubled Teens Rethink Crime

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Talk therapy is best for some people; antidepressants are better for others. Scientists say PET scans might help figure out early on what treatment a person needs. iStockphoto.com hide caption

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