An investigation by Harvard University has found evidence of scientific misconduct by Marc Hauser, a professor of psychology, The Boston Globe reports. Mr. Hauser, who studies the evolution of cognition, apparently was not able to produce data to support his conclusions in a paper that found that monkeys had abilities key to learning language. The university has said Mr. Hauser is now on a one-year leave but declined to say whether that was a punishment, citing confidentiality. Cognition, the journal that published the influential paper, will retract it. Other journals where Mr. Hauser has published, including Science, are conducting investigations of their own.