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Macrovariation
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Chapter 4 provides an analysis of the patterns of default verb movement identified in Chapters 2 and 3. First, it shows that the attested macro-typologies are not accidental choices of the languages, but rather stem from a compensatory mechanism between syntax and morphology in licensing the Tense, Aspect, and Mood (TAM) interpretation of the verb, whereby verb movement only occurs in cases of poor paradigmatic instantiation of TAM, that is in cases when TAM chief values are not expressed by synthetic and non-syncretic paradigms. Second, a technical implementation of this proposal is offered which allows the modelling of this instance of variation into a parameter hierarchy, along the lines envisaged by the Rethinking Comparative Syntax research group. To conclude, the data from Brazilian Portuguese are assessed against the expectations of the proposed mechanism.
Title: Macrovariation
Description:
Chapter 4 provides an analysis of the patterns of default verb movement identified in Chapters 2 and 3.
First, it shows that the attested macro-typologies are not accidental choices of the languages, but rather stem from a compensatory mechanism between syntax and morphology in licensing the Tense, Aspect, and Mood (TAM) interpretation of the verb, whereby verb movement only occurs in cases of poor paradigmatic instantiation of TAM, that is in cases when TAM chief values are not expressed by synthetic and non-syncretic paradigms.
Second, a technical implementation of this proposal is offered which allows the modelling of this instance of variation into a parameter hierarchy, along the lines envisaged by the Rethinking Comparative Syntax research group.
To conclude, the data from Brazilian Portuguese are assessed against the expectations of the proposed mechanism.

