An investigation of Marc Hauser, a Harvard University psychology professor who studies primate behavior and animal cognition, came to a head on Friday with a letter from Harvard's dean confirming eight instances of scientific misconduct. The exact offenses are still unclear, but three papers have received or are receiving modifications. The papers include a 2002 Cognition article (retracted), a 2007 article in Proceedings of the Royal Society B (received an addendum), and a 2007 article in Science. From Harvard Dean Michael Smith's letter:
[T]he investigating committee found problems with respect to the three publications mentioned previously, and five other studies that either did not result in publications or where the problems were corrected prior to publication. While different issues were detected for the studies reviewed, overall, the experiments reported were designed and conducted, but there were problems involving data acquisition, data analysis, data retention, and the reporting of research methodologies ...