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published_or_final_version / English Studies / Master / Master of Arts

This dissertation investigated the acquisition and processing of anaphora by learners of English, using both "offline" methods such as paper-and-pencil written tests and "online" methods such as self-paced reading-for-comprehension. Three experiments were conducted. The first two experiments tested advanced Chinese ESL learners' knowledge and processing of anaphora. The focus of the first experiment was on whether participants automatically use gender and number cues, and verb information to interpret pronouns and reflexives during online processing. The second experiment manipulated gender and pragmatic cues to test whether participants have acquired knowledge of structural constraints on reflexive interpretation (i.e., the binding principles). The third experiment, using a pretest-treatment-posttest design, investigated the efficacy of computer-delivered Processing Instruction (PI) on the acquisition of structural constraints and the use of those constraints during reading. During the pretest, subjects completed a self-paced reading task and a written test. For the treatment, participants learned the grammatical constraints on reflexives through interaction with a computer program. Posttest assessment included one interpretation test, one sentence completion task, and one self-paced reading task. The role of feedback in Computer Assisted Language Learning was also examined. Results showed the following: (1) Advanced L2 learners were more sensitive to certain types of agreement information (gender) than others (number). (2) PI improved L2 learners' knowledge about constraints on reflexives as measured by offline tests. (3) PI led to improvement in learners' processing strategies as measured by online tasks. (4) No significant difference was found between the implicit feedback group and the explicit feedback group in the third experiment. Overall, this research highlights the importance of multiple types of assessment that tap the acquisition of grammatical knowledge as well as the proficiency with which learners use that knowledge during reading comprehension tasks.

Semanticists, philosophers and logicians have standardly analyzed a range of natural language expressions on the model of the variables of formal languages. This dissertation explores variable- based semantic theories of pronounsand proper names. The first two chapters argue that a variable-based, presuppositional semantics for pronouns proposed by Cooper (1979, 1983) resolves an apparent trilemma arising from the conjunction of three plausible commitments concerning the semantics of pronouns: that some anaphoric pronouns with quantifier antecedents are bound variables, that referential pronouns have context-independent meanings, and that the relation between bound and referential pronouns is not ambiguity or homonymy. The first chapter argues that Cooper’s semantics is descriptively and empirically superior to alternative theories, including Kaplan’s account, which does not resolve the trilemma. The second addresses an important objection to the view that bound and referential pronouns make the same semantic contribution, involving cases where bound pronouns do not appear to trigger semantic presuppositions. I argue that this appearance is misleading: bound pronouns do trigger semantic presuppositions and have the same (Cooper-style) denotations as referential pronouns. The third chapter addresses the phenomenon of non c-command or ‘donkey’ anaphora. These anaphors appear to require a departure from Cooper’s semantics and, more generally, from the view that anaphoric pronouns correspond to (classical) bound variables. I consider D-type accounts of donkey anaphora and argue that these accounts must be revised in ways that bring the denotations of donkey anaphors closer to those of ordinary bound and referential pronouns. The last chapter asks whether proper names require a variable-based semantics. I consider a pair of recent anaphoric theories of proper names, according to which proper names have anaphoric uses and are thus better modeled as variables. I argue that there are important reasons to reject a variable-based model for proper names, in contrast with pronouns.

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 1986. / Includes bibliographical references (v. 3, leaves 575-581). / This thesis is concerned with developing an account within the Government and Binding (GB) theory of the grammaticality of such structures as (1), and exploring the implications of this account for the theory of empty categories, chains, and scope. The hallmark characteristic of such grammatical S-Structure representations as (1) is that the anaphor is outside the c-command domain of its understood antecedent. The basic anaphoric effect is termed connectivity. 1) [which of each other's friends][did the men see t]? Chapter 1 is a brief overview of the necessary definitions presumed in the thesis, and an outline of the subsequent chapters. Chapter 2 introduces a large body of data which must be treated on a par with (1), and reviews and criticizes several existing proposals which have been made to account for (1). The chapter argues that the binding theory must apply to structures having the essential form of (1). We demonstrate that no treatment which involves lowering the anaphor into the c-command domain of the antecedent via "reconstruction" operations, or involves applying the Binding Theory at a level at which WH movement is not represented, can be maintained. Chapter 3 develops a revision of the binding theory, focusing on Condition A, which is capable of treating all the connectivity data in a unified way. The major formal construct proposed in the chapter is the chain accessibility sequence, essentially a path of nodes through which the potential antecedents for an expression are accessed. The revised binding theory is defined in terms of such sequences; as the name implies, the notion chain plays a prominent role. This approach to connectivity is developed in the spirit of the Path theory of Kayne (1983) and Pesetsky (1982). We also discuss properties of structures of the form of {l), but where the constituent containing the anaphor is predicative in nature. We shall see that the predicative nature of the constituent significantly constrains the possibilities of assigning the anaphor an antecedent. This chapter adopts, and argues in favor of, the Linking theory of binding introduced by Higginbotham (1983). Chapter 4 focuses on the theory of empty categories, arguing that it is desirable to construct the theory so that no empty categories bear binding features (the features[+/- anaphoric] and[+/- pronominal] are thus restricted to overt categories). This proposal, which I term the No Features Hypothesis, departs from the characteristic treatment of ECs in GB theory. The chapter adopts Brody's (1985) proposals concerning the distribution of PRO and NP-trace. We adopt, and later extend, the Local Binding Condition (LBC) on A chains, argued by Rizzi (1982) to constrain the well-formedness of A chains. We reformulate it in terms of Linking theory, as the Chain Obviation Condition (CCC), and argue that it holds of all chain types. This is shown to be a principle with considerable generality, subsuming the LBC, Condition C of the binding theory, and the anti-c-command condition on linking. Adopting the COC, along with the NFH, allows the elimination of the class R-expression from the inventory of binding types. It will be shown that the anti-c-command condition on parasitic gaps derives directly from the CCC, with no stipulations. The chapter concludes with a defense of the proposal that the theory of anaphora must recognize anaphoric dependence and obviation as separate relations (as argued by Lasnik (1976), (1981), and Higgginbotham (1985)). Chapter 5 discusses constraints on the interpretation of sentences in which a quantificational NP is the antecedent of an NP-trace which it does not c-command. These considerations lead us to formulate a constraint on movement operations. The chapter also argues that the operations of WH-movement and QR are strictly ordered in the LF component. / by Andrew Barss. / Ph.D.

La présente thèse porte sur l’utilisation et l’interprétation des sujets nuls et pronominaux en portugais brésilien. Son objectif est de comprendre les facteurs sémantiques et discursifs qui peuvent être pertinents pour le choix entre ces expressions anaphoriques et la façon dont ce choix s’articule avec la théorie générale de la résolution de l’anaphore. Le point de départ a été la recherche sur les sujets nuls et réalisés sous la perspective de la grammaire générative, en particulier la théorie paramétrique. Cette thèse démontre que l’analyse proposée dans cette perspective ne peut rendre compte des données observées. Par exemple, la généralisation sur la « pauvreté » de la morphologie verbale directement liée à l’absence, ou à la fréquence réduite, de sujets nuls est contestée avec les données expérimentales ainsi qu’avec la distribution de la fréquence relative des sujets nuls au sein des personnes discursives dans le corpus. Une explication alternative présentée dans la littérature, à savoir l’importance des caractéristiques sémantiques des antécédents – l’Animacité et le Specificité – semble mieux expliquer la distribution constatée. Cette explication n’est cependant pas suffisante pour comprendre le choix des sujets anaphoriques en brésilien, puisque le nombre relatif de sujets nuls animés et spécifiques est relativement plus élevé que dans les langues à expression obligatoire des sujets. Par conséquent, cette thèse soutient que les facteurs discursifs semblent jouer un rôle crucial dans l’utilisation des sujets nuls et réalisés en brésilien. Les principaux facteurs identifiés ici sont le statut évident de l’antécédent et le caractère contrastif de l’information d’arrière-plan et l’information nouvelle. Le premier est un facteur standard dans la littérature sur la résolution de l’anaphore (exprimé par différents termes comme l’accessibilité, la familiarité, etc.), qui permet l’hypothèse d’une relation inverse entre le degré de saillance de l’antécédent et degré explicitation nécessaire dans l’expression anaphorique : plus l’antécédent est saillant, moins l’anaphore doit être explicite. Le second facteur, le contraste, constitue la principale contribution nouvelle de cette thèse : Comme pour d’autres niveaux d’analyse linguistique et d’autres phénomènes dans le langage, le choix de l’expression anaphorique semble être orienté vers l’efficacité. Plus précisément, lorsque l’information d’arrière-plan (background) et l’information assertée (focalisée) dans un énoncé contrastent, il est plus probable qu’un sujet nul soit utilisé. Les caractéristiques d’une grammaire permettant de traiter ces diverses caractéristiques est esquissée : on propose une grammaire à plusieurs niveaux dont les contraintes sémantiques et discursives agissent en parallèle à travers un principe de correspondance probabiliste. Il est ainsi démontré que les sujets nuls sont probables dans certains contextes de co-référence discursifs, puisque dans ces contextes, leurs antécédents sont plus évidents et contrastent plus avec l’information d’arrière-plan. Une contre-preuve apparente à la proposition esquissée ici est analysée : l’interprétation générique des sujets nuls. Cependant, on montre que les mêmes contraintes sémantiques appliquées à d’autres constructions génériques dans plusieurs langues peuvent produire des sujets nuls génériques en brésilien, étant donné l’échec de la mise en arrière-plan prédite par l’approche proposée ici. Enfin, les résultats de trois expériences de mouvements oculaires en lecture, qui étudient l’utilisation et l’interprétation des sujets nuls et pronominaux, sont présentés. Ces résultats corroborent de façon convaincante l’hypothèse selon laquelle les sujets nuls et réalisés ainsi que leur interprétation peuvent être expliqués par la théorie proposée ici, qui les traite en termes de contraintes d’interprétation plutôt qu’en termes de légitimation syntaxique. / The present dissertation is concerned with the use and interpretation of null and pronominal subjects in Brazilian Portuguese. This investigation examines these phenomena in an attempt to disentangle the semantic and discursive factors that can be relevant for choice between these anaphoric expressions in Brazilian Portuguese and the way in which this choice is articulated with the general theory of anaphora resolution. The starting point of this dissertation was the research looking into null and overt subjects from the perspective of Generative Grammar, specially the Parametric Theory. Throughout the present work, however, the analyses proposed in this perspective were shown not to account for the data at stake. The generalization that poor verbal morphology is directly related to the absence or reduced frequency of null subjects, for example, is challenged through experimental data and an investigation of the relative frequency of null subjects across discourse persons in corpora. An alternative explanation presented in the previous literature, namely the importance of the antecedents’ features of Animacy and Specificity, seems to better account for the attested distribution. However, this explanation is not sufficient for understanding the choice between null and overt subjects in Brazilian Portuguese, since the number of animate and specific null subjects is still relatively higher than in languages with obligatory expression of subjects. Therefore, it is argued that discourse factors seem to play a crucial role in the use of null and overt subjects in Brazilian Portuguese. The main factors identified here are Obviousness and Contrast. The first is a standard feature in the literature about anaphora resolution (expressed by a variety of terms, such as Salience, Familiarity, Accessibility, etc.), which is part of the reverse mapping hypothesis according to which the more obvious the subject is, the less explicit the co-referential form is allowed to be. The second factor, Contrast, is the main finding of the present dissertation: as is the case for other levels of linguistic analyses and other phenomena in language, the choice of anaphoric expression in Brazilian Portuguese seems to be driven by efficiency. In the present case, this means that, when the backgrounded information and the asserted (focused) in- formation in an utterance contrast the most, it is more likely that a null subject will be used. The design of a grammar that deals with these multiple features is sketched, specifically, a multi-layered scalar probabilistic grammar is proposed, whose semantic and discourse constraints act in parallel through a probabilistic mapping. It is, thus, shown that null subjects are likely in discursive co- reference, since in these contexts their antecedents are more obvious and the focused information contrasts the most with the background. An apparent counter-example to the proposal sketched here is analyzed: the generic interpretation of null subjects. However, it is shown that the same semantic constraints cross-linguistically applied to other generic constructions can produce generic null subjects in Brazilian Portuguese, given the failure to be grounded predicted by the approach proposed here. Finally, on-line evidence for the analysis of the use and interpretation of null and pronominal subjects is provided. The results found in three eye-tracking while reading experiments provide striking evidence in favor of the proposal put forward here, according to which null and overt subjects and their interpretation can be accounted for in terms of constraints on interpretation rather than licensing.

Thesis (Ph. D.)--University of California, San Diego, 2003. / Vita. Includes bibliographical references (leaves 232-241).

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This thesis proposes a modification of Chomsky's (1992) theory of locality to deal with restructuring phenomena which allow an apparent violation of the locality condition on certain local processes. Various restructuring phenomena including long-distance NP movement exemplified by long-distance Object Preposing (Chapter 2) and long-distance head movement exemplified by clitic climbing (Chapter 3) are examined cross linguistically. Long-distance anaphora (Chapter 4) are also examined based on the view the locality on various types of anaphor-antecedent relationships follow from the theory of movement. / It is argued that the peculiar behavior of restructuring constructions in terms of locality follows from the lexical properties of restructuring verbs that allows a defective Tense to occur in the complement clause. The following effects result: (i) Case checking within the embedded clause becomes impossible; (ii) the defective Tense triggers incorporation of the infinitive verb into the matrix verb. As a result, the embedded element that requires Case is forced to raise into the matrix clause as a last resort operation, hence motivation long-distance movement. / In order to reconcile long-distance movement with the economy principle which requires chain links to be minimal, this thesis refines Chomsky's (1992) theory of locality. The proposed hypothesis claims that the locality condition on certain operations such as NP movement and head movement follows from the economy principle in such a way that an element can move to the closest position in which its morphological requirement can be satisfied. This notion of the shortest movement is further clarified in that the domain in which the shortest movement requirement is satisfied can be extended if there is an appropriate linked chain formed by head movement. The proposed system not only provides principled account for the phenomena of restructuring, but also has some important implications for the notion of economy of derivation.

The aim of this thesis is to improve coreference resolution in Swedish by providing a hybrid approach based on combining data-driven methods and linguistic knowledge. Coreference resolution here consists in identifying all expressions in a text that have the same referent, for example, a person or an object. The linguistic knowledge is based on Accessibility Theory (Ariel 1990). This is used for guiding the  selection of likely anaphor-antecedent pairs from the set of all possible such pairs in a text. The data-driven method adopted is Memory-Based Learning (MBL), a supervised method based on the idea that learning means storing experiences in memory, and that new problems are solved by reusing solutions from similar experiences (Daelemans and Van den Bosch 2005). The referring expressions covered by the system are names, definite descriptions, and pronouns. In order to maximize performance, we use different classifiers with a specific set of linguistically motivated features for each type of expression. The great majority of features used for classification are domain- and language-independent. We demonstrate two ways of using this method of linguistically motivated selection of anaphor-antecedent pairs. First, the amount of training examples stored in memory  is reduced. We find that for coreference resolution of definite descriptions and names, the amount of training data can thereby be reduced with only a minor loss in performance, but for pronoun resolution there is a negative effect. Second, selection can be used for improving on coreference resolution results. This is the first step in our hybrid approach to coreference resolution, where the second step is the application of an MBL classifier for determining coreference between the selected pairs. Results indicate that this hybrid approach is advantageous for coreference resolution of definite descriptions and names. For pronoun resolution, there is a negative effect on recall along with a positive effect on precision. / För att köpa boken skicka en beställning till exp@ling.su.se/ To order the book send an e-mail to exp@ling.su.se