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make errors, and in later stages they attempt various correct but less preferred adult forms. I argue that all child forms in differentstages better satisfy OO-CORR constraints than adult forms do. I present the learning trajectory modeled with a MaxEnt grammarof weighted constraints.Young Ah Do (Massachusetts Institute of Technology) Session 17Michael Kenstowicz (Massachusetts Institute of Technology)The Base in Korean noun paradigms: evidence from toneWe utilize tonal evidence to address the choice of the base-form in Korean noun inflection. The etymologically expected coronalis being replaced, primarily by [-s], so that /nac/ ‘day’ now inflects as [nat, nas-i, nas-il]. It is argued that the isolation form servesas the base of Korean noun paradigms (Albright 2008), and choosing [-s] for the inflected form offers the greatest chance of acorrect hit among possible coronal variants. Our corpus data and experimental results show that speakers also reasonprobabilistically about tone, choosing the tonal pattern that offers the gretatest chance of a correct hit.Stefan Dollinger (University of British Columbia Vancouver) Session 59Taking on take up:the49 th parallel as a persisting linguistic isoglossThis talk explores a semantic variable with the lexical item “take up”, in the meaning of ‘going over the correct answers for atest/exam/quiz’. The meaning is undocumented in non-Canadian sources, but Canadian sources do not propose a Canadian status.A written questionnaire study on both sides of the Canada-U.S. border reveals that the meaning is wide-spread in Canada, butvirtually unknown in the USA. Within Canada, Ontario is its location of origin. The meaning appears to be a Canadian innovationthat is currently spreading across Canada, thus reinforcing the international border as a semantic isogloss that is sensitive to subtledenotational differentiation.Jhih-Jie Carey Dong (San Jose State University) Session 66Yi-An Jason Chen (San Jose State University)The traditional names of Paiwan: identity, hierarchy, and social stratumPaiwan has a clear-cut social hierarchy, and one’s traditional name often reveals his/her social stratum. Not only does this systemhighly influence one’s power, wealth, and marital status, but also the change of names varies with the elevation and/or descent ofone’s social status. In addition, umaq (house) names exist in Paiwan naming practices, and every new-born child carries his/herumaq name. Parents give each child a name in accordance with his/her hierarchy in the family. This practice is strictly enforcedand Paiwan cannot overstep their boundaries to use the names of other genders or strata.Ryan Doran (Northwestern University) Session 50Gregory Ward (Northwestern University)Speaker affect and proximate demonstratives in predicate NPsPrevious pragmatic analyses of English demonstratives (Lakoff 1974, Lyons 1977, Potts & Schwarz 2010, inter alia) have identified arange of uses – variously termed AFFECTIVE DEMONSTRATIVES or EMOTIONAL DEIXIS – that reflect a speaker’s ‘emotional involvement’.In this paper, we analyze another such use, restricted to proximate demonstratives in predicate position, as in (1):(1) Everyone thinks I’m this big time whore. When really I’m not. [corpus]We argue that felicitous use of such demonstratives requires that there be a salient (evoked or inferable) property associated withthe predication and that this property be contextually VALENCED (positively or negatively).Alex Drummond (McGill University) Session 17Dahl’s paradigm: in defense of the crossover analysisTwo influential analyses of Dahl’s paradigm, Fox 2000 and Reinhart 2006, share the assumption that the constraint responsiblefor blocking the missing reading is also responsible for strong crossover effects. This conclusion is challenged in some of FlorisRoelofsen’s recent work. I will provide independent evidence for the crossover analysis from constraints on variable binding. Iwill also argue that Dahl’s paradigm does not motivate a relaxation of the strict parallelism constraint on VP ellipsis, nor anappeal to economy conditions such as Rule H or Rule I.148