News outlets including CNN cited ......

News outlets including CNN cited a study of several major media outlets by a UCLA political scientist and a University of Missouri-Columbia economist purporting to "show a strong liberal bias." But the study employed a measure of "bias" so problematic that its findings are next to useless, and the authors -- both former fellows at conservative think tanks cited in the study to illustrate liberal bias -- seem unaware of the substantial scholarly work that exists on the topic.