It's interesting that the elite journals are more likely to issue retractions. Though I suppose the increased prestige and job opportunities logically lead to more motive to game the system, create sockpuppets, commit other fraud etc.<p>Does the high rate of retractions show that the system works to some extent though? I wonder what percentage of fraudulent research or faked peer review is actually exposed? I guess we'll never know - one more argument for open access and access to open research data though!