Key points are not available for this paper at this time.
This content analysis of three newspapers looks at the extent to which two context elements, routine and conflict, affect the mix of sources. The hypothesized effect (that nonroutine and conflict-based news would contain a greater diversity of sources) was found only for proximate news stories. Although journalists can develop a diverse pool of sources in their own communities, only the most visible sources are easily reachable in other locations.
Berkowitz et al. (Mon,) studied this question.