搜索结果: 1-1 共查到“信息科学与系统科学 US”相关记录1条 . 查询时间(0.031 秒)
Competition and Ideological Diversity: Historical Evidence from US Newspapers
US Newspapers Competition and Ideological Diversity
2015/7/17
We study the competitive forces which shaped ideological diversity in
the US press in the early twentieth century. We find that households
preferred like-minded news and that newspapers used their...