<h1 class="story-header">Harvard researcher rejects Google's 'personal attack'</h1> <div class="caption body-narrow-width"> <img src="http://news.bbcimg.co.uk/media/images/50880000/jpg/_50880135_c21252b5-671f-46e8-ab02-3e9b40fd3861.jpg" alt="Google logo" width="304" height="171"> <span style="width: 304px;">Google is under investigation by the European Commission</span> </div> <div class="story-feature related narrow"> <a class="hidden" href="#story_continues_1">Continue reading the main story</a> <h2>Related stories</h2> <ul class="related-links-list"> <li><a href="/news/technology-11876443">Google to be investigated by EU</a></li> <li><a href="/1/hi/business/8533551.stm">Google faces competition inquiry</a></li> </ul> </div> <p class="introduction" id="story_continues_1">A researcher who has accused Google of bias says the internet giant is now waging a campaign to discredit him.</p> <p>Ben Edelman, an associate professor at Harvard Business School, published a study this week claiming Google boosts its own products in search results.</p> <p>The Californian company responded by suggesting he was actually working on behalf of its rival, Microsoft.</p> <p>But Mr Edelman told the BBC that Google was launching "personal attacks" to distract people from its own behaviour.</p>