Abstract
In chapter 2, the author lays out a classification of polarity-sensitive items (PSIs) and their lexical categories. PSIs include negative polarity items (NPIs), free-choice items (FCIs), positive polarity items (PPIs), and negative concord items (NCIs). General indefinites display different distributions than do NPIs. Indefinite nouns like ħada and iši function as NPIs, and they are distinct from indefinite nouns (general indefinites) that occur in the context of negation. This chapter discusses the distinctive features of NPIs and PPIs, such as scope widening. Two different types of PSIs interact with negation in interesting ways: NPIs and NCIs. One key difference between the two is that NPIs cannot function as fragment answers without negation and can occur in nonnegative contexts, such as interrogative and conditional contexts. NCIs display the opposite behavior. This chapter describes the distribution of the disjunctive particles walla/willa/ʔam ‘or’ and the negative counterpart wala ‘nor’ in polarity contexts and their status as structures for coordinate complexes in Arabic.
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