A Unique Way To Look At Media Bias

We've received some e-mails this morning pointing to a new academic study which says that media bias is real. A summary of the study says:

"While the editorial page of The Wall Street Journal is conservative, the newspaper's news pages are liberal, even more liberal than The New York Times. The Drudge Report may have a right-wing reputation, but it leans left. Coverage by public television and radio is conservative compared to the rest of the mainstream media. Meanwhile, almost all major media outlets tilt to the left.

These are just a few of the surprising findings from a UCLA-led study, which is believed to be the first successful attempt at objectively quantifying bias in a range of media outlets and ranking them accordingly.

'I suspected that many media outlets would tilt to the left because surveys have shown that reporters tend to vote more Democrat than Republican,' said Tim Groseclose, a UCLA political scientist and the study's lead author. 'But I was surprised at just how pronounced the distinctions are.'"

"based their research on a standard gauge of a lawmaker's support for liberal causes. Americans for Democratic Action (ADA) tracks the percentage of times that each lawmaker votes on the liberal side of an issue. Based on these votes, the ADA assigns a numerical score to each lawmaker, where '100' is the most liberal and '0' is the most conservative. After adjustments to compensate for disproportionate representation that the Senate gives to low population states and the lack of representation for the District of Columbia, the average ADA score in Congress (50.1) was assumed to represent the political position of the average U.S. voter.

Groseclose and Milyo then directed 21 research assistants — most of them college students — to scour U.S. media coverage of the past 10 years. They tallied the number of times each media outlet referred to think tanks and policy groups, such as the left-leaning NAACP or the right-leaning Heritage Foundation.

Next, they did the same exercise with speeches of U.S. lawmakers. If a media outlet displayed a citation pattern similar to that of a lawmaker, then Groseclose and Milyo's method assigned both a similar ADA score."