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.

中文翻译：

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两极分化和意识形态对齐的争论交流模型

提出了一个多层次的意见形成模型，该模型考虑到对不同问题的态度通常不是独立的。在模型中，代理人交换关于一系列事实的信念。评估关联的认知结构将不同（部分重叠）的事实集合与不同的政治问题联系起来，并以一种从期望值理论中借用的方式确定代理人的态度立场。如果代理人优先与在一个或几个问题上持有相似态度的其他代理人互动，这会导致有偏见的论点池和两极分化，因为代理人群体选择性地相信不同的事实子集。除了大多数先前的意见极化模型解决的单个问题上出现了意见的双模态分布之外，