People who are interested in and paying close attention to each other begin to speak more alike, a psychologist says. iStockphoto.com hide caption

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Wounded Warrior Battalions have been set up to help troops returning from combat recover from their injuries. But recent Pentagon reviews have found a pattern of overmedication in such battalions. Here, Marines assigned to Wounded Warrior Battalion East at Walter Reed National Military Medical Center in Bethesda, Md., graduate from a training course in January. Capt. Jill L. Wolf hide caption

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A veteran of the Iraq War with post-traumatic stress disorder talks to physical therapist Nicole Bormann before a session in the VA Medical Center in St. Louis. Chris Hondros/Getty Images hide caption

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Abby Mahoney, 13, has Asperger's syndrome. She says she has memorized nearly everything there is to know about Star Wars. Her enthusiasm for the subject helped make her the target of a bullying boy. Courtesy of the Mahoney family hide caption

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Author Bill Clegg works as a literary agent in New York. Christian Hansen/ hide caption

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A portrait of Spc. Jonathan Nestico, 27, is displayed in his family's home in Woburn, Mass. Becky Lettenberger/Becky Lettenberger/NPR hide caption

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The danger of death by heart attack or suicide is greatest in the first week after a cancer diagnosis. Max Delson Martins Santos/iStockphoto.com hide caption

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In Triggered, Fletcher Wortmann describes his struggles with obsessive-compulsive disorder, also known as the "doubting disorder." Thomas Dunne Books hide caption

itoggle caption Thomas Dunne Books

The U.S. military is trying to improve treatment of post-traumatic stress disorder. But many veterans say they're still under pressure to deny they have problems. Here, military personnel attend a presentation on PTSD at Fort Hamilton Army Garrison in Brooklyn, N.Y., in December 2009. Chris Hondros/Getty Images hide caption

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