In 2009, a group of researchers from Texas Tech University reported that many of the instances of "non-originality" that Turnitin finds aren't plagiarism, but are just the use of jargon, course terms or phrases that appeared for legitimate reasons. For example, the researchers found high percentages of flagged material in the topic terms of papers (i.e. "global warming") or "topic phrases", which they defined as the paper topic with a few words added (i.e. "the prevalence of childhood obesity continues to rise").