Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.

The author's Thesis (Ph. D.)--University of Pennsylvania, 1912. / Slip with printed thesis note inserted before the title-page. Bibliography: p. [xiii]-xiv.

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Thesis (Th. D.)--Grace Theological Seminary, 1988. / Abstract. Vita. Includes bibliographical references (leaves 235-264).

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Should we analyse Arabic morphology in terms of a morpheme-based approach or in terms of a stem-based approach? This is the question which has figured prominently in morphological debate in recent years, especially in Semitic linguistics with ablaut-rich inflectional systems. This study provides a novel synchronic account to Transitional Libyan Arabic morphology, using a stem-based approach that assesses the morphomicity (Maiden, 2009, p.45) of stem alternations in the verb inflectional paradigm. This work focuses on the role of stem alternations in defining inflectional paradigmatic complexity in relation to implicative relations and inflection classes within the stem-space and principal parts morphological approaches. Following Bonami and Boyé’s (2002) approach to stem alternations in French, we define an inheritance hierarchy for TLA morphomic verb stems and show how this effectively identifies a set of inflection classes in the absence of affixal allomorphy. Within Stump and Finkel (2013) principal parts model, TLA inflection class membership can be determined by principal parts as indexed stems and/or as substems. The scale of the complexity of TLA inflectional system is also measured using the Principal-Parts Analyzer (PPA) computational tool. TLA conjugations reveal a synchronic morphomic patterning which shows sensitivity to extramorphological factors. The TLA semi-autonomous morphology is reflected by stem referencing features that provide the base for stem indexing possibilities which in turn can define TLA inflectional classes in the absence of the affix allomorphy. The results of principal parts analysis reveal that verb inflectional complexity of TLA as a Semitic language is as morphologically complex as concatenative stem based systems, posing serious empirical problems for any justifications for a unique distinctive non-concatenative morpheme-based account.

When bilinguals process words in one of their languages, the words in their other language are also activated. This activation can be due to shared conceptual representations or to direct cross- linguistic links between the words at the lexical level. The nature of the activation is affected by the bilingual profile of the speaker, with more proficient L2 speakers activating conceptual representations directly while less proficient speakers arc more dependent on lexical level links. The aim of my research is to investigate the role of bilingual profile in the lexical organization of Arabic-English bilinguals. Bilingual profile refers to relative status of the two languages, which can depend on a number of factors for example, language dominance, age of acquisition and proficiency. In this thesis I test the lexical processing of Arabic-English bilinguals in masked and visible priming of lexical decision to written words. Arabic and English have different scripts and also differ in their morphological structure making them ideal languages for testing lexical level cross-linguistic activation. I examine the effect bilingual profile on the effect of morphological and semantically related Arabic primes and targets and the effect of Arabic morphological and translation primes on the processing of English targets.

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