
(AP)
A new
study on media bias, "What Drives Media Slant? Evidence From U.S. Daily Newspapers,” is getting some press today. I haven't read the study, but among the articles I've read about it is the New York Times
piece, which (oddly) was written by a professor of economics at the University of Chicago Graduate School of Business. Since the study comes from a pair of University of Chicago economists, I'd wager the Times piece is a fair representation of the study's contents.
There are two main points in the Times piece. The first has to do with the way in which the study determined how a news outlet is biased. Authors Matthew Gentzkow and Jesse M. Shapiro looked through the 2005 Congressional Record to find the "1,000 most partisan phrases" that year, a determination based on how often a phrase was used by Republicans or Democrats.
Phrases like "death tax," “illegal aliens,” and “Terri Schiavo” were found to have been used most often by Republicans, while “minimum wage,” “public broadcasting,” and “middle class” were used mostly by Democrats. The authors looked at how often newspapers used these phrases to determined which party they were biased toward.
To some extent, this makes sense. One could argue that a newspaper that uses "death tax" over "inheritance tax," for example, is to some extent tipping its hand. (My favorite such tip-off has to do not with words but punctuation – that is, the decision by the Washington Times to put quote marks around the phrase "gay marriage.") At the same time, if a newspaper were to run a story with the headline "Why The Republicans' Handling of the Terri Schiavo Case Proves Their Incompetence," it's probably not the best evidence that the paper is biased toward Republicans.
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