Abstract This paper addresses two restrictions regarding agreement with nominative arguments in Icelandic DAT-NOM constructions. The first is the reported asymmetry in intervention effects in mono-clausal versus bi-clausal environments. The second regards the well-known Person Restriction that prohibits agreement with non-3rd person arguments. It is argued that both of these phenomena can be viewed as instances of cumulative constraint interaction, where less important constraints in the grammar ‘gang up’ to block some higher constraint. In order to account for this, I adopt a model of syntax with both weighted constraints and serial optimization that is known as Serial Harmonic Grammar in the phonological literature. It will be demonstrated that such a system can offer a more principled analysis of the construction-specific nature of the aforementioned phenomena.

中文翻译：

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干预是一种帮派效应

摘要本文讨论了冰岛DAT-NOM构造中有关主格一致的两个限制。第一个是报道的单子句与双子句环境中干预效果的不对称性。第二个方面是众所周知的“人身限制”，它禁止与非第三人称论据达成一致。有人认为这两种现象都可以看作是累积约束相互作用的实例，其中语法中不太重要的约束“聚拢”以阻止更高的约束。为了解决这个问题，我采用了既具有加权约束又具有串行优化功能的语法模型，该模型在语音文献中被称为“串行和声语法”。