<h1>&nbsp;</h1> <div class="toc-about clearfix"> <h1><a href="http://many.at/links2tabs" class="header">Psychology - психологія 心理学 psychologie 心理學 ψυχολογία psychologia मनोविज्ञान pszichológia உளவியலாளர்கள் psicologia మానసిక నిపుణులు 심리학 psykologi tâm lý học psikoloji психология psicólogos علم النفس psicología פסיכולוגיה</a></h1><p>References 1 - 4 for Psykologen: Därför biter du på naglarna</p> </div><!-- class="about clearfix" --><h1>&nbsp;</h1> <div id="mysitesnoframes" class="sites_content"><ul> <li><a rel="nofollow" href="http://www.vox.com/2015/4/22/8464365/nail-biting" ><img src="/wp-content/images/icons/32/globe2.png" width="32" height="32" /><strong>[1] Vox</strong>vox.com</a></li> <li><a rel="nofollow" href="http://www.sciencedirect.com/science/article/pii/S0005791614000925" ><img src="/wp-content/images/icons/32/globe3.png" width="32" height="32" /><strong>[2] en kanadensisk studie</strong>sciencedirect.com</a></li> <li><a rel="nofollow" href="http://www.expressen.se/halsoliv/gen-okar-risk-for-tvangssyndrom/" ><img src="/wp-content/images/icons/32/globe4.png" width="32" height="32" /><strong>[3] tvångssyndom</strong>expressen.se</a></li> <li><a rel="nofollow" href="http://www.expressen.se/halsoliv/sa-farligt-lever-du-om-du-ar-en-nagelbitare/" ><img src="/wp-content/images/icons/32/globe5.png" width="32" height="32" /><strong>[4] Så farligt lever du om du är en nagelbitare – läs det här och du kommer...</strong>expressen.se</a></li> </ul></div> Your browser does not handle frames, which are required to view the sites in tabs. Please upgrade to a more modern browser.<br /><br />