Here is more on how questionable studies are being discovered.  I've 
wondered about bee studies.  How many should be discredited?

Also, it seems PLoS One is increasing in importance and respectability. 
(About time IMO)
---
False positives: fraud and misconduct are threatening scientific 
research | Science | The Guardian

Dirk Smeesters had spent several years of his career as a social 
psychologist at Erasmus University in Rotterdam studying how consumers 
behaved in different situations. Did colour have an effect on what they 
bought? How did death-related stories in the media affect how people 
picked products? And was it better to use supermodels in cosmetics 
adverts than average-looking women?

The questions are certainly intriguing, but unfortunately for anyone 
wanting truthful answers, some of Smeesters' work turned out to be 
fraudulent. The psychologist, who admitted "massaging" the data in some 
of his papers, resigned from his position in June after being 
investigated by his university...

http://www.guardian.co.uk/science/2012/sep/13/scientific-research-fraud-bad-practice

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