Once a shy monkey, always a shy monkey? New study shows persistence of anxiety

We all know people who are tense and nervous and can't relax. They may have been wired differently since childhood.

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<p><a href="http://www.physorg.com/news134191489.html">Once a shy monkey, always a shy monkey? New study shows persistence of anxiety</a></p> <p>We all know people who are tense and nervous and can't relax. They may have been wired differently since childhood.</p>