“…Reporters try to choose the best sources for a given story based on the source's institutional position, knowledge, accessibility, or cooperativeness, or some combination of these characteristics. However, previous research has documented that a source's political power or social influence often unduly influences such choices, causing government officials and corporate spokespersons to be overrepresented in the source pool (Whitney, Fritzler, Jones, Mazzarella, & Rakow, 1989). For example, Ashlock, Cartmell and Kelemen (2006) reported that 34.88 percent of the sources for information about BSE cited by stories in their sample were government officials and 23 percent were industry representatives, but only 4.49 percent were university scientists.…”