http://hdl.handle.net/1721.1/7673 http://hdl.handle.net/1721.1/47830 Segmental alternations and metrical theory Vaysman, Olga This dissertation focuses on phonological alternations that are influenced or constrained by word-internal prosody, i.e. prominence and foot structure, and what these alternations can tell us about metrical theory. Detailed case studies of several cases of prosody sensitive segmental alternations, as well as a survey of such phenomena mentioned in the literature were the empirical basis for this study. I have offered an empirically motivated proposal that constituency and prominence have to be separate entities in the grammar, since some segmental alternations cannot be accounted for without reference to foot boundaries, while others require reference to prominence. The data also shows that there are languages with mismatches between stress assignment pattern and foot structure. Based on the empirical data that prosody-sensitive alternations provide, I develop the formal proposal of representation of prominence and foot structure and their interaction. Prominence is represented by gridmarks on an autosegmental tier, while foot structure is not built on the gridmarks, but is a function of syllables grouped into higher-level constituents. I propose that the relationship between foot structure and prominence should be mediated by violable constraints relating the two entities. I call them Prominence Alignment constraints. Mismatches between foot structure and prominence assignment in a given language are caused, under the present theory, when one of the constraints that refer to prominence but not to foot structure outranks a Prominence Alignment constraint. The factorial typology generated by such ranking is substantiated by the case studies throughout this dissertation. I argue that the model developed in this dissertation generates all types of interaction between foot structure and prominence attested and does not generate unattested patterns. Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 2009. Includes bibliographical references (p. 263-268). http://hdl.handle.net/1721.1/47829 Partial belief and expert testimony Briggs, Rachael (Rachael Amy) My dissertation investigates two questions from within a partial belief framework: First, when and how should deference to experts or other information sources be qualified? Second, how closely is epistemology related to other philosophical fields, such as metaphysics, ethics, and decision theory? Chapter 1 discusses David Lewis's "Big Bad Bug", an argument for the conclusion that the Principal Principle-the thesis that one's credence in a proposition A should equal one's expectation of A's chance, provided one has no inadmissible information-is incompatible with Humean Supervenience-the thesis that that laws of nature, dispositions, and objective chances supervene on the distribution of categorical properties in the world (past, present, and future). I map out the logical structure of the Big Bad Bug, survey a range of possible responses to it, and argue that none of the responses are very appealing. Chapter 2 discusses Bas van Fraassen's Reflection principle-the thesis that one's current credence in a proposition A should equal one's expected future credence in A. Van Fraassen has formulated a diachronic Dutch book argument for Reflection, but other authors cite counterexamples to Reflection that appear to undermine the credibility of diachronic Dutch books. I argue that a suitably qualified version of Reflection gets around the counterexamples. I distinguish between Dutch books that reveal incoherence-like the diachronic Dutch book for conditionalization-and Dutch books that reveal a type of problem I call selfdoubt. I argue that violating Reflection is a type of self-doubt rather than a type of incoherence. (cont.) Chapter 3 argues that the halfer and thirder solutions to Adam Elga's Sleeping Beauty problem correspond to two more general approaches to de se information. Which approach is right depends on which approach to decision theory is right. I use Dutch books and scoring rules to argue that causal decision theorists should favor the approach that corresponds to thirding, while evidential decision theorists should favor the approach that corresponds to halfing. Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 2009. Includes bibliographical references (p. [83]-86). http://hdl.handle.net/1721.1/37417 Syntax and discourse in the acquisition of adjunct control Adler, Allison Nicole (cont.) I suggest that the control principles are intact, and that a separate aspect of grammar is responsible for these non-adult interpretations. I argue that adjunct attachment height, which is crucial to determining what type of control will obtain in the adult grammar, must be learned from the input and exhibits gradual development. If the child has failed to embed an adjunct clause at a sufficiently low level (e.g., within the VP), the null subject will fall into the domain of discourse control rather than syntactic control. If these claims are correct, we expect children to show adult-like control in adjuncts, albeit contingent upon the adjunct type. Three experiments were conducted to test these predictions. We find correlations between non-adult control and non-adult pronoun interpretation, both argued to be due to the misattachment of the adjunct clause. Children's interpretations of PRO in misattached adjuncts are also similar to those in true discourse control contexts, as expected. This dissertation is a study of null subjects in adjunct clauses in English. The goal is twofold: to establish a comprehensive theory of control in adjuncts, and to utilize this theory to understand the adjunct control interpretations of children aged 3-6. The theoretical basis of this work is Landau (2000, 2001), who characterizes the complement control mechanism as a syntactic Agree relation (Chomsky 1995, et seq.). I argue that the same mechanism governs control into low-attaching adjuncts (like before, after, while and without) as well. High-attaching adjuncts and gerund subjects, on the other hand, are subject to discourse-governed control rather than the syntactic Agree relation. I argue that the topic of the sentence is the controller in these cases. This theory makes certain predictions for acquisition. We expect control in verb complements and low-attaching adjuncts to develop at the same age, given that they are governed by the same mechanism. Discourse-governed control, on the other hand, is predicted to develop much later in childhood. However, many researchers have observed that control in some low-attaching adjuncts may be delayed until age 5, beyond the age at which children master complement control. Includes bibliographical references (p. 211-219). Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 2006. http://hdl.handle.net/1721.1/45900 Imaging neural correlates of syntactic complexity in a naturalistic context Bachrach, Asaf The aim of this thesis, and the research project within which it is embedded, is to delineate a neural model of grammatical competence. For this purpose, we develop here a novel integrated, multi-disciplinary experimental paradigm that endorses the fundamental premise of generative grammar, that the study of language is in essence, the study of the mind. We use functional Magnetic Resonance Imaging (fMRI) to monitor brain activation while subjects listen to short narratives. The texts have been written so as to introduce various syntactic complexities (relative clauses, embedded questions, etc.) not usually found (in such density) in actual corpora. We have calculated a number of complexity measures (both at the level of the single word and at that of the phrase) based on current linguistic and psycholinguistic theory and with the use of a computationally implemented probabilistic parser. By correlating these measures with observed brain activity, we are able to identify the different brain networks that support linguistic processing and characterize their particular function. Conversely, we use the rich brain data to inform our cognitive, and linguistic, theory. We report here the neural correlates of surprisal (based on contextual predictions), syntactic complexity, structural ambiguity and disambiguation, Theory of Mind and non-local dependencies. This work made use of novel solutions to compute numerical predictions for these linguistic dimensions, which are often tested only qualitatively, and of a novel parametric fMRI design that allowed for the use of single subject unaveraged data as the dependent variable. The thesis ends with a synthesis of the results in the form of a blue print for a neural model of grammatical competence. Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 2008. Includes bibliographical references (p. 253-280).