When it's more than the 'terrible twos'

We all know how infants can act up during their terrible twos, but when these behaviors are accompanied by developmental setbacks, they could point to something more serious.

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<p><a href="http://www.physorg.com/news148050675.html">When it's more than the 'terrible twos'</a></p> <p>We all know how infants can act up during their terrible twos, but when these behaviors are accompanied by developmental setbacks, they could point to something more serious.</p>