Made available in DSpace on 2017-07-10T18:55:32Z (GMT). No. of bitstreams: 1 Tania.pdf: 6315449 bytes, checksum: 8cc5718ad6a417f2209d5f03f5a450ec (MD5) Previous issue date: 2013-03-01 / This essay has the aim to fulfill a descriptive study regarding the lexical ambiguity of the Brazilian Sign Language Libras through the investigation of the specialty literature, culminating with the construction of a data with ambiguous lexical items containing, respectively in two dictionaries considered bilingual: The dictionary of the Brazilian Sign Language/Libras version 2.0, 2008 (digital) and the The New Deit-Libras Trilingual Illustrated Encyclopedic Dictionary (2012). To the general studies about this subject, it was regarded the basis of the structuralist semantics founded in researches of investigators, some of them were: Ullmann (1964), Saussure (1987), Câmara Jr (1970) and Silva (2006). Based also in Emmorey (2002), Johnston & Schembri (2007), Ferreira Brito (1995) and Quadros & Karnopp (2004), the criteria that would found the setting of data was established so that the records and analysis were made. This study was conducted by a collection of questions that include our concern to know how the lexical ambiguity that is shown in Libras; how the users of this language deal with this kind of situation, which effects this phenomenon causes in the comprehension of the deaf and yet what competences and abilities the deaf develop or need to develop to clarify mostly the sings that are lexically ambiguous. In the bias of the specialized literature regarding the studies of the meanings and the significations of the words, it´s assumed that the lexical ambiguity is caused when a sign/word has two or more meanings/significations, when comparing the contexts. Through the general distinction between polysemy and homonymy, it was concluded that in Libras, differently from the Portuguese Language, the lexical ambiguity can be shown in three different forms: (i) through the homonymy; (ii) through the polysemy; and through the world knowledge and determining evocative (religious, cultural, social and others). This way, homonymy is considered the situation in which the meanings of the same word don´t show any semantic relation and polysemy when the meanings/significations admitted by a word/sing meet the points of a semantic contact. The representative meaning of FRIDAY and FISH, for instance, although semantically not related, are part of a meaningful group of others signs that the same effect occurs. We call them evocative traces (traces determined by relations either religious or cultural or others), we couldn t classify them as cases of homonymy, neither polysemy. Thus, we created a third kind of ambiguity. When the phenomenon of the lexical ambiguity is analyzed, in general, some authors will say that, in fact, the marks of the available resources of the language (the marks, such as, the references of the enunciatively space, the alteration of the movement of the hands or the other expressions), they would be enough to differ them. Anyway, many cases and analyzed this study, it could be observed that, even being useful, they are not able to solve or clarify all the ambiguous items. / Esta dissertação objetiva realizar um estudo descritivo acerca da ambiguidade lexical na Língua Brasileira de Sinais Libras por meio de investigações na literatura especializada, culminando com a construção de um corpus com itens lexicais ambíguos lematizados, respectivamente em dois dicionários bilíngues: O dicionário da Língua Brasileira de Sinais/LIBRAS versão 2.0, 2008 (digital) e o Dicionário Enciclopédico Ilustrado Trilíngue Novo Deit-Libras (2012). Para os estudos gerais sobre o assunto, tomamos como base a semântica lexical estruturalista baseada em trabalhos de pesquisadores, dentre outros, Ullmann (1964), Saussure (1987), Câmara Jr (2002) e Silva (2006). Apoiando-nos também em Emmorey (2002), Johnston & Schembri (2007), Ferreira Brito (1995) e Quadros e Karnopp (2004), traçamos critérios que subsidiaram os levantamentos dos dados para os registros e análises. Este estudo foi conduzido por um conjunto de questões das quais incluem nossa preocupação em saber como a ambiguidade lexical se manifesta na Libras; como os utentes dessa língua lidam com esse tipo de situação; quais efeitos esse tipo de fenômeno acarreta na compreensão do surdo e ainda que competências e habilidades os surdos desenvolvem ou precisam desenvolver para clarificar ao máximo os signos ambíguos. À luz da literatura especializada com estudos sobre significados e sentidos de palavras, assumimos que a ambiguidade lexical é ocasionada quando um signo/palavra sustenta dois ou mais significados/sentidos, quando expostos ao contexto. A partir do critério geral de distinção entre polissemia e homonímia, observamos que em Libras, diferentemente da Língua Portuguesa, a ambiguidade lexical pode se manifestar de três formas distintas: (i) pela homonímia; (ii) pela polissemia; e (iii) pelo conhecimento de mundo e determinantes evocativos (religiosos, culturais e outros). Consideramos homonímia a situação em que os significados de uma mesma palavra não mantêm entre si qualquer tipo de relacionamento semântico e polissemia quando os significados/sentidos admitidos pela palavra/signo encontram pontos de contato semânticos. O signo representivo para SEXTA-FEIRA e PEIXE, a título de exemplo, embora semanticamente não relacionados entre si, faz parte de um conjunto significativo de outros signos em que o mesmo acontece. Por estarem relacionados de algum modo, chamamos de traços evocativos, não podendo classificá-los como casos de homonímia e tampouco, polissemia. Desse modo, criamos um terceiro tipo de ambiguidade. Quando se estuda ambiguidade lexical, em geral, alguns autores preconizam que, de fato, ela não existiria, tendo em vista os recursos disponíveis na língua, os marcadores, tais como: referentes no espaço enunciativo, expressões não manuais e outros, seriam suficientes para desambiguá-los. Todavia, para muitos casos apresentados e analisados ao longo do trabalho, observamos que, embora útil, eles não são capazes de resolver ou clarificar todos os itens ambíguos.

Made available in DSpace on 2017-07-10T18:55:40Z (GMT). No. of bitstreams: 1 Tania Martins.pdf: 6315452 bytes, checksum: 7dc3d00f0fb5538dabf6d799c2cb9b38 (MD5) Previous issue date: 2013-03-01 / This essay has the aim to fulfill a descriptive study regarding the lexical ambiguity of the Brazilian Sign Language Libras through the investigation of the specialty literature, culminating with the construction of a data with ambiguous lexical items containing, respectively in two dictionaries considered bilingual: The dictionary of the Brazilian Sign Language/Libras version 2.0, 2008 (digital) and the The New Deit-Libras Trilingual Illustrated Encyclopedic Dictionary (2012). To the general studies about this subject, it was regarded the basis of the structuralist semantics founded in researches of investigators, some of them were: Ullmann (1964), Saussure (1987), Câmara Jr (1970) and Silva (2006). Based also in Emmorey (2002), Johnston & Schembri (2007), Ferreira Brito (1995) and Quadros & Karnopp (2004), the criteria that would found the setting of data was established so that the records and analysis were made. This study was conducted by a collection of questions that include our concern to know how the lexical ambiguity that is shown in Libras; how the users of this language deal with this kind of situation, which effects this phenomenon causes in the comprehension of the deaf and yet what competences and abilities the deaf develop or need to develop to clarify mostly the sings that are lexically ambiguous. In the bias of the specialized literature regarding the studies of the meanings and the significations of the words, it´s assumed that the lexical ambiguity is caused when a sign/word has two or more meanings/significations, when comparing the contexts. Through the general distinction between polysemy and homonymy, it was concluded that in Libras, differently from the Portuguese Language, the lexical ambiguity can be shown in three different forms: (i) through the homonymy; (ii) through the polysemy; and through the world knowledge and determining evocative (religious, cultural, social and others). This way, homonymy is considered the situation in which the meanings of the same word don´t show any semantic relation and polysemy when the meanings/significations admitted by a word/sing meet the points of a semantic contact. The representative meaning of FRIDAY and FISH, for instance, although semantically not related, are part of a meaningful group of others signs that the same effect occurs. We call them evocative traces (traces determined by relations either religious or cultural or others), we couldn t classify them as cases of homonymy, neither polysemy. Thus, we created a third kind of ambiguity. When the phenomenon of the lexical ambiguity is analyzed, in general, some authors will say that, in fact, the marks of the available resources of the language (the marks, such as, the references of the enunciatively space, the alteration of the movement of the hands or the other expressions), they would be enough to differ them. Anyway, many cases and analyzed this study, it could be observed that, even being useful, they are not able to solve or clarify all the ambiguous items / Esta dissertação objetiva realizar um estudo descritivo acerca da ambiguidade lexical na Língua Brasileira de Sinais Libras por meio de investigações na literatura especializada, culminando com a construção de um corpus com itens lexicais ambíguos lematizados, respectivamente em dois dicionários bilíngues: O dicionário da Língua Brasileira de Sinais/LIBRAS versão 2.0, 2008 (digital) e o Dicionário Enciclopédico Ilustrado Trilíngue Novo Deit-Libras (2012). Para os estudos gerais sobre o assunto, tomamos como base a semântica lexical estruturalista baseada em trabalhos de pesquisadores, dentre outros, Ullmann (1964), Saussure (1987), Câmara Jr (2002) e Silva (2006). Apoiando-nos também em Emmorey (2002), Johnston & Schembri (2007), Ferreira Brito (1995) e Quadros e Karnopp (2004), traçamos critérios que subsidiaram os levantamentos dos dados para os registros e análises. Este estudo foi conduzido por um conjunto de questões das quais incluem nossa preocupação em saber como a ambiguidade lexical se manifesta na Libras; como os utentes dessa língua lidam com esse tipo de situação; quais efeitos esse tipo de fenômeno acarreta na compreensão do surdo e ainda que competências e habilidades os surdos desenvolvem ou precisam desenvolver para clarificar ao máximo os signos ambíguos. À luz da literatura especializada com estudos sobre significados e sentidos de palavras, assumimos que a ambiguidade lexical é ocasionada quando um signo/palavra sustenta dois ou mais significados/sentidos, quando expostos ao contexto. A partir do critério geral de distinção entre polissemia e homonímia, observamos que em Libras, diferentemente da Língua Portuguesa, a ambiguidade lexical pode se manifestar de três formas distintas: (i) pela homonímia; (ii) pela polissemia; e (iii) pelo conhecimento de mundo e determinantes evocativos (religiosos, culturais e outros). Consideramos homonímia a situação em que os significados de uma mesma palavra não mantêm entre si qualquer tipo de relacionamento semântico e polissemia quando os significados/sentidos admitidos pela palavra/signo encontram pontos de contato semânticos. O signo representivo para SEXTA-FEIRA e PEIXE, a título de exemplo, embora semanticamente não relacionados entre si, faz parte de um conjunto significativo de outros signos em que o mesmo acontece. Por estarem relacionados de algum modo, chamamos de traços evocativos, não podendo classificá-los como casos de homonímia e tampouco, polissemia. Desse modo, criamos um terceiro tipo de ambiguidade. Quando se estuda ambiguidade lexical, em geral, alguns autores preconizam que, de fato, ela não existiria, tendo em vista os recursos disponíveis na língua, os marcadores, tais como: referentes no espaço enunciativo, expressões não manuais e outros, seriam suficientes para desambiguá-los. Todavia, para muitos casos apresentados e analisados ao longo do trabalho, observamos que, embora útil, eles não são capazes de resolver ou clarificar todos os itens ambíguos

Made available in DSpace on 2014-08-20T13:47:51Z (GMT). No. of bitstreams: 1 Marion Rodrigues Dariz_Dissertacao.pdf: 1113434 bytes, checksum: 2e39effb0b9d57b5f45dc5d939b720d6 (MD5) Previous issue date: 2013-04-11 / This research is in a pedagogical intervention, whose aim was to plan an educational video-interactive, implement it and evaluate the impacts of its use for learning a content Portuguese Language (instance of lexical ambiguity), in a class of 8th grade Elementary School to a public school in Pelotas. The video was developed in light of the Cultural-Historical Theory of Vygotsky. The evaluation of the intervention was through a qualitative procedure. Data for the evaluation were collected through the following instruments: observation, document analysis and semi-structured interviews and were analyzed using the procedures of Discourse Textual Analysis (MORAES, 2003): a mix of content analysis and discourse analysis. The research findings suggest that the pedagogical intervention tool, for being attractive, with the use of sound, images and interaction, it was a mediator instrument able to provide the internalization of the content, contributing to the awareness of the concept worked, favoring teaching-learning and generating mental development. It is intended, therefore disclose this study so that other professionals can make use of this technological tool in their classrooms contributing to learning. / Esta pesquisa constitui-se em uma intervenção pedagógica, cujo objetivo foi planejar um vídeo educativo-interativo, implementá-lo e avaliar os impactos de sua utilização para a aprendizagem de um conteúdo de Língua Portuguesa (ambiguidade lexical), em uma turma de 8ª série do Ensino Fundamental de uma escola pública de Pelotas. O vídeo foi elaborado à luz da Teoria Histórico-Cultural de Vygotsky. A avaliação da intervenção foi por meio de um procedimento qualitativo. Os dados para a avalição foram coletados por meio dos seguintes instrumentos: observação, análise de documentos e entrevistas semiestruturadas e foram analisados por meio dos procedimentos da Análise Textual Discursiva (MORAES, 2003): um misto de análise de conteúdo e análise de discurso. Os achados da pesquisa da intervenção pedagógica sugerem que a ferramenta, por ser atrativa, com o uso de som, imagens e interação, foi um instrumento mediador capaz de propiciar a internalização do conteúdo, contribuindo para a tomada de consciência do conceito trabalhado, favorecendo o processo de ensino-aprendizagem e gerando o desenvolvimento mental. Pretende-se, assim, divulgar este estudo para que outros profissionais possam fazer uso desta ferramenta tecnológica em suas salas de aula contribuindo para a aprendizagem.

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Title: Processing of Turkic Languages Author: Sibel Ciddi Department: Institute of Formal and Applied Linguistics, Faculty of Mathematics and Physics, Charles University in Prague Supervisor: RNDr. Daniel Zeman, Ph.D. Abstract: This thesis presents several methods for the morpholog- ical processing of Turkic languages, such as Turkish, which pose a specific set of challenges for natural language processing. In order to alleviate the problems with lack of large language resources, it makes the data sets used for morphological processing and expansion of lex- icons publicly available for further use by researchers. Data sparsity, caused by highly productive and agglutinative morphology in Turkish, imposes difficulties in processing of Turkish text, especially for meth- ods using purely statistical natural language processing. Therefore, we evaluated a publicly available rule-based morphological analyzer, TRmorph, based on finite state methods and technologies. In order to enhance the efficiency of this analyzer, we worked on expansion of lexicons, by employing heuristics-based methods for the extraction of named entities and multi-word expressions. Furthermore, as a prepro- cessing step, we introduced a dictionary-based recognition method for tokenization of multi-word expressions. This method complements...

兩種語句處理模型曾被提出以解釋閱讀句子時語法及語意資訊的互動。句法優先模型(syntax-first models)認為詞性判斷必定先於語意分析，而制約滿足模型(constraint-satisfaction models)則認為不同的資訊在語句理解的過程中會同時被處理。本研究檢驗兩種語句處理模型能否解釋語句中的詞彙歧義解困(lexical ambiguity resolution)。 許多眼動研究曾發現詞彙歧義詞的次要語義偏向效應(subordinate bias effect)，顯示語意偏向次要語義的語境能加速激發歧義詞的次要語義並且產生語義競爭。然而，語境的語法在詞彙歧義解困中扮演的角色並不清楚。因而，不同語義分屬不同詞性的詞性歧義詞便提供我們一個媒介以檢驗詞彙歧義解困中詞性及語意限制的互動。 本研究的目的有二：(一) 檢驗詞性限制能否決定中文詞性歧義詞的語義解困；(二) 檢驗中文歧義詞語義的詞性是否會影響次要語義偏向效應。實驗一我們將四種不同類型的中文非均勢同形異義詞置於語法及語意皆為次要語義偏向的句子裡；實驗二則將四種不同類型的中文非均勢同形異義詞置於語法為次要語義偏向但語意中立的句子裡。受試者閱讀句子時的眼動表現會即時被記錄。 實驗一的結果發現：(一) 四類型歧義詞的次要語義偏向效應只反映在目標詞後區域的二次閱讀指標上；(二) 就效果量而言，NV歧義詞的次要語義偏向效應在目標詞及目標詞後兩個區域都比VN歧義詞來得大。實驗二的結果則發現：(一) VN歧義詞的次要語義偏向效應從目標詞區的首次閱讀指標就出現，並且持續至目標詞及目標詞後兩個區域的二次閱讀指標；(二) 另外三類型歧義詞的次要語義偏向效應直到所有分析區域的二次閱讀指標才反映出來；(三) NV歧義詞的次要語義偏向效應比VN歧義詞出現得更晚也更不明顯。整體而言，本研究的結果顯示詞性限制並不是影響中文詞性歧義詞語義解困的唯一因素。此結果支持制約滿足模型，並反對句法優先模型的預測。 / Two primary sentence processing models have been proposed to account for the interaction between syntactic and semantic information in reading sentences: Syntax-first models assume that syntactic-category assignment must precede semantic analysis, while constraint-satisfaction models propose that information from different sources is processed and weighed at the same time during sentence comprehension. The present study examined whether these sentence processing models, which assume different contribution of syntactic category and semantic context, can explain the resolution of lexical ambiguity in sentences. Several eye movement studies have demonstrated the subordinate bias effect (SBE) for lexical-semantic ambiguous words (i.e., NN/VV homographs), indicating that a subordinate-biased semantic context can boost the activation of the subordinate meaning of ambiguous words and causes meaning competition (Duffy, Morris, & Rayner, 1988). However, the role of syntactic context in lexical ambiguity resolution is less clear. Syntactic category ambiguous words (i.e., SCA words; VN/NV homographs), whose alternative meanings differ in syntactic category (e.g., watch in English), serve as a means of examining the interaction between syntactic category and semantic constraints during lexical ambiguity resolution. The purpose of the present study was twofold: (a) to examine whether the syntactic category constraint can determine the semantic resolution of Chinese SCA words, and (b) to investigate whether syntactic category of alternative meanings of Chinese homographs can influence the SBE during lexical ambiguity resolution. Four types of Chinese biased homographs (NN, VV, VN, and NV) were embedded into syntactically and semantically subordinate-biased sentences (Experiment 1) and into syntactically subordinate-biased but semantically neutral sentences (Experiment 2). Participants’ eye movements were recorded as they read each sentence. In Experiment 1, the results showed: (1) The SBE for the four types of homographs was significant only in the second-pass reading on the post-target words. (2) Numerically, the NV homographs revealed a larger effect size of SBE than VN homographs on both target and post-target words. In Experiment 2, the results showed: (1) The SBE for VN appeared from the first-pass reading on the target words and lasted to the second-pass reading on the target and post-target words. (2) The SBE for the other types of homographs did not occur until the second-pass reading in all analyzed regions. (3) The SBE for NV occurred much later and less obviously than that for VN. In general, our findings support the constraint-satisfaction models and reject the prediction of the syntax-first models, suggesting that the syntactic category constraint is not the only factor influencing the semantic resolution of SCA words.

Είναι γνωστό ότι η άνοια σχετίζεται με την απώλεια μνήμης, έκπτωση γλωσσικών ικανοτήτων, έλλειψη αυτονομίας και απώλεια της προσωπικής ταυτότητας του ασθενούς. Στόχος της παρούσας εργασίας είναι να αναδείξει τη σχέση αμφισημίας- άνοιας και να διερευνηθεί η σκοπιμότητα ύπαρξης ενός μεθοδολογικού εργαλείου για την εκτίμηση και τη διερεύνηση της γλωσσικής έκπτωσης στη άνοια μέσα από την γλωσσική επεξεργασία των λεξικών σχέσεων (μεταφορών –ομωνυμίας- μετωνυμιών) και να παρουσιάζει το προφίλ των ασθενών αυτών. Στην πρώτη ενότητα παρουσιάζω γενικά στοιχεία για την νόσο της άνοιας αλλά και στοιχεία για τους κυριότερους τύπους της νόσου όσον αφορά την γλωσσική συμπεριφορά των ασθενών. Στην ενότητα αυτή αναφέρω επίσης βασικά διαγνωστικά εργαλεία που χρησιμοποιούνται ευρέως για τον προσδιορισμό της νόσου, ενώ αναλυτικότερα στοιχεία για τα εργαλεία που χρησιμοποιούνται και τις δομές που εξετάζουν παρατίθενται στο παράρτημα. Κλείνοντας την ενότητα καταλήγω στα οφέλη και την αναγκαιότητα ύπαρξης πρώιμης διάγνωσης. Στην δεύτερη ενότητα αναφέρομαι κυρίως στο νοητικό λεξικό και στην δυσκολία πρόσβασης των ασθενών με πιθανή άνοια σε αυτό. Επιπλέον υπάρχουν στοιχεία για την λεξική κατάκτηση, επιλογή και ανάκτηση των πληροφοριών και φαίνεται η σχέση νοητικού λεξικού – αμφισημίας. Στην τρίτη ενότητα παρουσιάζω το φαινόμενο της αμφισημίας από την θεωρητική άποψη αρχικά της γλωσσολογίας, πως κατακτώνται οι αμφίσημες λέξεις και επεξεργάζονται σε σχέση με την ηλικία και καταλήγω στην νευρική συσχέτιση των λεξικών αμφισημιών με συγκεκριμένες εγκεφαλικές περιοχές. Στο τέλος της παρούσας ενότητας παρουσιάζω ευρήματα/ συμπεράσματα από πλήθος ερευνών που αφορούν την λεξική αμφισημία με διαφορετικές μεθόδους για κάθε τύπο άνοιας. Στην τελευταία ενότητα παρουσιάζω τις βασικές υποθέσεις μου πως η χρήση των λεξικών σχέσεων θα μπορεί να αποτελέσει διαγνωστικό εργαλείο στην άνοια. Επίσης παρουσιάζω την κατασκευή και τα αποτελέσματα της πειραματικής διαδικασίας ανάμεσα σε τέσσερα διαφορετικά υποκείμενα (πασχόντων –υγειών) διαφορετικής παθολογίας και σοβαρότητας. Ακολουθεί τέλος το παράρτημα με στοιχεία που αφορούν την διαφοροδιάγνωση της νόσου βάσει αλγορίθμων με τα γνωστικά ελλείμματα όπως παρουσιάζονται από τους φροντιστές των ασθενών αλλά και παθολογικών συμπτωμάτων που παρουσιάζουν, ενώ σε πίνακα υπάρχουν τα γλωσσικά στοιχεία που βοηθούν επίσης στην διαφοροδιάγνωση των κυριότερων τύπων άνοιας και τα αποτελέσματα της πειραματικής διαδικασίας. / It is well known that dementia is associated with memory loss, impaired language skills, lack of autonomy and loss of patients’ independence. The aim of this paper is to highlight the connection between ambiguity and dementia, and to investigate the feasibility of a methodological tool to assess and investigate the linguistic deduction in dementia through the linguistic processing of lexical relations (metaphor-homonymy-metonymy) and present the profile of such patients. In the first section I present general information as well as the linguistic features of the main types of dementia. In this section there is also a report on the diagnostic tools which are widely used to identify the disease. More detailed information about the use of these diagnostic tools is listed in the Annex. At the end of this section there is evidence about the benefits and the importance of early diagnosis. The second section is mainly referred to the mental lexicon and the difficulty patients with probable dementia face in accessing it. Furthermore there is evidence for lexical acquisition, selection and retrieval of information which shows the mental lexicon – ambiguity connection. In the third section I present the phenomenon of ambiguity, starting from the theoretical linguistic view; how the ambiguous words are conquered and processed in relation to age and lead to neural correlation of lexical ambiguity with specific brain regions. At the end of this section I present findings / conclusions of several researches, using different methods, on the lexical ambiguity on each type of dementia. The last section presents my basic assumptions concerning how the use of lexical relations can be a diagnostic tool in dementia. Furthermore, I present the construction and the results of the experimental process between four different subjects (patient-healthy) with different pathology and severity of the disease. Finally, at the annex, I present data on the differential diagnosis of the disease based on algorithms with cognitive deficits reported by caregivers of patients as well as pathology features. Also there is a board with differential linguistic elements which help distinguish the main types of dementia, along with the experimental material used and the results of the procedure.

本論文以語意學、認知語言學及心理語言學的觀點，探討中文名詞的多義現象。本篇論文討論詞彙多重意義的語言及心理語言表徵，並研究詞義如何在心理詞彙庫中被擷取。 文中藉由認知語言學者Tuggy（1993）所提出的認知語意架構，及詞彙語意學中「同形異義詞（homonymy）」、「一詞多義（polysemy）」及「模糊意義（vagueness）」等觀念之區辨，探索詞義之本質。本文所談之意義（sense）根據Ahrens（1999）之定義有以下三個特性：（1）意義非轉喻（metonymy）或部分/全體（meronymy）之延伸，但可以是隱喻性延伸；（2）意義之間的延伸關係無法由在同類名詞中直接以規律獲得；（3）除非特意，一詞的不同意義不會在同一語境中同時出現。 針對詞彙辨識歷程的語意效應，本論文有三大研究主題--意義數目效應、意義相關性效應及相對意義頻率效應。各效應之預測如下：「意義數目效應」認為意義數目較多的詞彙在詞彙判斷作業（lexical decision tasks）中比較容易辨識；「意義相關性效應」認為當一個詞的意義之間的相關性較高時，該詞的辨識時間亦會較快；「相對意義頻率效應」則認為一個詞意義之間頻率差異程度越小，該詞越有歧義之特質，也因此越容易辨識。 本研究旨在以實證方式探討這些語意向度在詞彙辨識歷程中所扮演的角色。由受試者提供200個中文名詞的意義並決定意義間的相關性；進行電腦詞彙判斷作業，得到辨識每個詞所需的反應時間；再由統計考驗反應時間來驗證各效應。 本研究結果發現只有「意義數目效應」達顯著水準，意義數目較多的詞彙在詞彙判斷作業中比較容易辨識。此一效應支持心理詞彙庫的隨機觸接模型（random access model）及平行觸接模型（parallel access model）並駁斥「序列搜尋模型（serial access model）」。 / This thesis studies the multiple senses of Chinese nominals from semantic, cognitive linguistic, and psycholinguistic viewpoints. It discusses the linguistic and psycholinguistic representations of a word's multiple senses, and the access of these senses in the mental lexicon. The nature of lexical meaning is examined by discussing lexical semantic notions such as homonymy, polysemy, and vagueness, and by introducing Tuggy's (1993) cognitive linguistic representation of a word's multiple lexical meanings. The "senses" of a word are defined according to the lexical semantic theory of Ahrens (1999) as having three properties: (1) A sense is not an instance of metonymic or meronymic extension, but may be an instance of metaphorical extension. (2) The extension links between two senses cannot be inherited by a class of nouns. (3) Senses cannot appear in the same context (unless the complexity is triggered). This thesis specifically looks into three semantic effects on word recognition, including the word's number-of-sense (NOS) effect, the effect of sense relatedness, and the effect of relative sense frequency. The predictions of these effects are as follows: The NOS effect predicts that words with more senses are recognized faster than those with fewer senses. The effect of sense relatedness predicts that words with more closely related senses are easier to recognize than those with distantly related senses. The effect of relative sense frequency predicts that words with equal sense frequencies are more easily recognized than words with unequal sense frequencies. This research aims at empirically verifying these three effects during the recognition of isolated lexical items. Subjects generate the senses of 200 Chinese nominals, and rate the relatedness among these senses. Lexical decision tasks are conducted to obtain the reaction times required to recognize each stimulus item. The semantic effects are verified by comparing the reaction times of different groups of experimental stimuli. The experimental results confirm only the NOS effect, giving support to the random and parallel access models of lexical access, and refuting the serial access model of the mental lexicon.

過去二十多年來，心理語言學研究關注詞彙歧義解困 (lexical ambiguity resolution)歷程發生時，語義脈絡與多義詞的語義頻率之間的交互作用。許多研究發現，當語境支持非均勢同形異義詞 (unbalanced homograph) 的次要語義時，同形異義詞的凝視時間長於與其有相同字形頻率的單義詞 (unambiguous control)，此為次要語義偏向效應 (subordinate bias effect)。根據再排序觸接模型 (reordered-access model)，次要語義偏向效應來自於主要語義與次要語義的競爭；相對地，選擇觸接模型 (selective access model)則認為只有與語境相關的語義被激發，因此，次要語義偏向效應是因為提取到一個使用頻率較低的語義。本論文進行兩個眼動實驗。實驗一檢視中文多義詞的次要語義偏向效應以區辨兩種詞彙歧義解困模型分別提出的解釋。本實驗的材料使用了低頻同形異義詞、低頻單義詞、以及高頻單義詞。結果顯示，當使用的單義詞與多義詞字形頻率相同時，在目標詞及後目標詞上(目標詞後一個詞)皆發生了次要語義偏向效應。實驗二利用口語理解─視覺典範中透過受試者理解語音訊息時同步記錄眼動的作業方式來探究次要語義偏向效應是否來自於主要語義的激發。當口語句子中的目標詞被唸出後，會計算出隨著時間增加眼睛落在四個雙字詞的凝視比例。結果發現次要語義因為語境的選擇在聽到目標詞後大約500毫秒時就可被激發，主要語義則在一聽完多義詞後被激發。因此，多義詞的兩個語義在聽到目標詞後大約900至1300毫秒時(相當於在後目標詞時)發生競爭。整體而言，本研究顯示即使語境支持多義詞的次要語義，主要語義依然會被激發。因此，次要語義偏向效應是由兩個語義競爭後所造成的結果，符合再排序觸接模型的解釋。 / Research in psycholinguistics throughout the last two decades has focused on the interaction between linguistic context and meaning dominance during lexical ambiguity resolution. Many studies demonstrated the subordinate bias effect when the preceding context biased for the subordinate meaning (i.e. infrequent meaning) of an unbalanced homograph. According to the reordered access model, the SBE is due to competition between the dominant and subordinate meanings. On the contrary, the selective access model assumes only the context-relevant meaning is activated and the SBE is a result of access to a low frequent meaning. Two eye tracking experiments of sentence reading and sentence listening were conducted. Experiment 1 examined the SBE of Chinese homographs to differentiate the two accounts. We utilized low frequency homographs along with their matched low and high-frequency unambiguous words. The results showed the SBE emerging in fixation durations of the target region and post-target region (i.e. next two words of the target), when unambiguous controls were matched to the word-form frequency of ambiguous words. Experiment 2 used visual world paradigm to explore temporal dynamics of dominant meaning activation responsible for the SBE in an instructional eyetracking-during-listening task. Fixation probabilities on four disyllabic printed words were analyzed during a time period after a target word was uttered in a spoken sentence. The results supported the reordered access model. The subordinate meaning was activated by contextual information at about 500 ms after the onset of acoustic homograph at the time when context penetrated to make its favored meaning available. Soon after the offset of homograph, the dominant meaning became active. Both meanings associated with the homograph were activated during the time windows of 901 ms to 1300 ms, which approximately corresponding to the acoustic onset of post target. In sum, our studies demonstrate that the dominant meaning is activated even when the contextual information biases to the subordinate meaning of a homograph. The subordinate bias effect is the result of competition from two meanings, conforming to the reordered access model.