信息从地方流向国家:来自美国21个主要城市的证据

Lei Guo, Yiyan Zhang
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摘要

美国的地方新闻正在衰落。作为评估地方新闻现状的一种方法,本研究考察了在线媒体生态系统中地方和国家媒体之间的信息流。本文着眼于都市新闻,实证研究了一个城市的地方新闻报道是否以及何时会影响城市的全国新闻形象。本研究借鉴了媒介议程设置(IAS)理论,并考察了与美国人口最多的21个城市相关的大型新闻数据集。结果表明,地方媒体不太可能将其城市问题的突出性转移到国家媒体议程上,而是相反。此外,一个城市的经济实力和当地新闻基础设施的规模,特别是传统媒体部门,与当地媒体的力量显著相关,这些力量决定了该城市在全国媒体中的形象。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Information flows from local to national: Evidence from 21 major US cities
Local journalism is in decline in the United States. As one way to assess the state of local journalism, this study examines the information flows between local and national media in the online media ecosystem. Focusing on metropolitan journalism, this paper empirically investigates whether and when a city’s local news coverage can influence national news portrayal of the city. This research draws from intermedia agenda setting (IAS) theory and examines a large news data set related to the most populated 21 US cities. The results suggest that local media are not more likely to transfer the salience of their urban issues to the national media agenda than reversely. In addition, a city’s economic power and the scale of its local journalistic infrastructure, especially the traditional media sector, are significantly correlated with its local media’s power to determine how the city is portrayed in the national media.
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