Acquisitio a D Opacity
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ACQUISITIO AD OPACITY OLGA TIHOOVA Master’s Thesis in Theoretical Linguistics (LIN-3990) Department of Language and Linguistics Faculty of Humanities University of Tromsø Spring semester 2009 Table of Contents Acknowledgements ............................................................................................................................. - 1 - Abstract ............................................................................................................................................... - 3 - Chapter 1: Introduction ........................................................................................................................... 5 Chapter 2: Learnability in Optimality Theory .......................................................................................... 9 2.1 Introduction ................................................................................................................................... 9 2.2 Learning the Constraint Ranking ................................................................................................. 10 2.3 Learning Underlying Representations ......................................................................................... 21 2.3.1 Using phonotactics to learn phonological alternations ....................................................... 22 2.3.2 Surgery in Language Learning .............................................................................................. 26 2.3.3 Residual Issues: the Free Ride .............................................................................................. 27 2.4 Summary ..................................................................................................................................... 28 Chapter 3: Opacity in Optimality Theory ............................................................................................... 31 3.1 Introduction ................................................................................................................................. 31 3.2 Opacity in Optimality Theory ...................................................................................................... 33 3.2.1 Counterbleeding ................................................................................................................... 33 3.2.2 Counterfeeding ..................................................................................................................... 35 3.3 Approaches to Opacity in Optimality Theory .............................................................................. 39 3.3.1 Enriching Representations and Creating New Constraints .................................................. 40 3.3.2 Multistratal Variants of OT ................................................................................................... 45 3.3.3 Horizontal Correspondence.................................................................................................. 53 3.4 Summary ..................................................................................................................................... 57 Chapter 4: Optimality Theory with Candidate Chains ........................................................................... 59 4.1 Introduction ................................................................................................................................. 59 4.2 Optimality Theory with Candidate Chains ................................................................................... 59 4.3 Counterbleeding and counterfeeding in OT-CC .......................................................................... 64 4.3.1 Counterbleeding ................................................................................................................... 64 4.3.2 Counterfeeding ..................................................................................................................... 66 4.3.3 Zero-terminating chain-shifts ............................................................................................... 70 4.4 Summary ..................................................................................................................................... 73 Chapter 5: Metaconstraint on Ranking ................................................................................................. 75 5.1 Introduction ................................................................................................................................. 75 5.2 Three reasons to discard the metaconstraint ............................................................................. 75 5.2.1 Obligatorily counterbleeding processes ............................................................................... 78 5.2.2 Non-derived environment blocking ..................................................................................... 79 5.2.3 Spontaneous opacity ............................................................................................................ 90 5.3 The status of Precedence constraints ......................................................................................... 93 5.4. Summary .................................................................................................................................... 96 Chapter 6: Spontaneous Opacity in Acquisition .................................................................................... 99 6.1 Introduction ................................................................................................................................. 99 6.2 Spontaneous Counterbleeding .................................................................................................... 99 6.2.1 Learner A: overapplication effects ....................................................................................... 99 6.2.2 Learner B: alternative acquisition path ............................................................................. 107 6.2.3 More cross-subject variation data ..................................................................................... 110 6.3 Spontaneous counterfeeding .................................................................................................... 115 6.4 Summary ................................................................................................................................... 126 Chapter 7: Acquisition of Target-Like Opacity..................................................................................... 129 7.1 Introduction ............................................................................................................................... 129 7.2 Target-like opacity acquisition in OT-CC ................................................................................... 130 7.3 Target-like opacity acquisition in Stratal OT ............................................................................. 142 7.4 Summary ................................................................................................................................... 144 Chapter 8: Conclusion ......................................................................................................................... 147 Bibliography ..................................................................................................................................... - 151 - - 1 - Acknowledgements I would like to use this opportunity to express my profound gratitude to professors at the University of Tromsø, who, over the past two years, generously shared with me their skills and expertise in all areas of phonology. I am especially indebted to my supervisor, Dr. Martin Krämer. Without his wise guidance and invaluable assistance, this work could never have been written. During my thesis year, Dr. Krämer provided not only fruitful discussions and to-the-point criticism, but also encouragement and reassurance. Finally, and most importantly, I am deeply grateful to my family for their endless patience, understanding, moral support and all imaginable help that they provided. - 3 - Abstract This thesis focuses on the most recent OT-based theory of opacity called Optimality Theory with Candidate Chains (OT-CC, see McCarthy 2007). To date very little attention has been dedicated to the problem of acquisition of OT-CC grammars and to the treatment of spontaneous opacity effects in the light of OT-CC. In this thesis we demonstrate that OT-CC grammars can be effectively learned by the BCD algorithm (Prince & Tesar 2004). Also, on the basis of evidence from obligatorily counterbleeding processes, NDEBs and non-target-like opacity effects, we propose to make certain changes to the status of Precedence constraints with the view to increase the descriptive adequacy of OT-CC. We show that our proposed adjustments allow OT-CC to account for emergence and subsequent loss of spontaneous opacity effects, as well as for the phenomenon of U-shaped learning and cross-subject variation in early production data. Chapter 1: Introduction 5 Chapter 1: Introduction This thesis deals with a phenomenon that causes heated controversy among the proponents of different currents in phonological theorizing; the phenomenon that can shed light on such long-standing problems as language change and acquisition; the phenomenon that has been dubbed “the single most important issue in current phonological theory”(Idsardi 2000:337). I am talking, of course, about phonological opacity. The term ‘phonological opacity’ refers to cases where a surface