一种极化与意识形态一致性的论证传播模式
An Argument Communication Model of Polarization and Ideological Alignment
摘要：
一个多层次的意见形成模型，它考虑到对不同问题的态度通常不是独立的。在该模型中，代理人交换关于一系列事实的信念。评价性联想的认知结构将不同的（部分重叠的）事实集与不同的政治问题联系起来，并以借鉴期望值理论的方式确定代理人的态度立场。如果代理人优先与其他代理人在一个或几个问题上持有类似的态度，这将导致有偏见的论点池和极化的意义上说，代理人群体选择性地相信不同的子集的事实。除了出现的双峰分布的意见，大多数以前的意见极化模型解决的单一问题，我们的模型还占沿意识形态层面的几个问题的态度对齐。
英文摘要：
A multi-level model of opinion formation is presented which takes into account that attitudes on different issues are usually not independent. In the model, agents exchange beliefs regarding a series of facts. A cognitive structure of evaluative associations links different (partially overlapping) sets of facts to different political issues and determines an agents' attitudinal positions in a way borrowed from expectancy value theory. If agents preferentially interact with other agents that hold similar attitudes on one or several issues, this leads to biased argument pools and polarization in the sense that groups of agents selectively belief in distinct subsets of facts. Besides the emergence of a bi-modal distribution of opinions on single issues that most previous opinion polarization models address, our model also accounts for the alignment of attitudes across several issues along ideological dimensions.
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