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Judith Tonhauser (Ohio State University) Session 28Tense or grammatical aspect? Guarani nominal temporal suffixesGuarani has nominal temporal markers that have been suggested to be nominal tenses (e.g. Nordlinger & Sadler 2004). I propose fivecriteria for distinguishing tense and grammatical aspect and, on the basis of data collected during fieldwork in Paraguay, argue that theGuarani nominal markers are not tenses but grammatical aspect/modality markers. The criteria are derived from the core meaning oftense (as a relation between two times) and grammatical aspect (as an operation on eventuality/nominal descriptions) and are, hence,compatible with the major semantic theories of temporality.Maziar Azumi Toosarvandani (University of California, Berkeley) WITHDRAWN Session 36Deverbal nominalization in Northern PaiuteMaziar Azumi Toosarvandani (University of California, Berkeley) Session 101From nominalizer to absolutive suffix: Archaism & innovation in NumicThe Numic branch of the Uto-Aztecan (UA) language family displays a number of idiosyncratic features, some of which have beenargued to be conservative features of UA lost in all non-Numic languages, e.g. final features (Nichols 1973). I propose that Numic isconservative in another respect, its use, as a deverbal nominalizer and relativizer, of the suffix -t1 which in the non-Numic UAlanguages has been grammaticalized as an absolutive suffix. This proposal is significant for the long-standing debate over whetherNumic, Tübatulabal, Hopi, and Takic subgroup into a Northern UA branch (Kroeber 1907 and others) or not (Whorf 1935 and others).Anna Marie Trester (Georgetown University) Session 19Oh-prefacing in quotatives: Implications for speaker stance, alignment, & styleCurrent variationist sociolinguistic research into quoted speech has focused almost exclusively on the role of quotative verbs but hastended to neglect the quoted material itself in conveying stance or information about the speaker's affective or epistemic orientation(Bucholtz 2004, Bakhtin 1981). My research addresses this gap by focusing on the structural and interactional functions of thediscourse marker oh when used to preface quoted speech. I build on discourse analytic research into oh as a mechanism fornegotiating speaker/hearer alignment in interaction (Schiffrin 1987, Heritage 1998), contextualizing this against a quantitativeinvestigation of this speaker's stylistic use of quotation.Celina Troutman (Northwestern University) Session 3Brady Clark (Northwestern University)Matt Goldrick (Northwestern University)Variation & social networks during language changeSocial networks play a fundamental role in language change and variation (Milroy & Milroy 1985, Eckert 2000). In particular, Nettle1999 argues that they solve the ‘threshold problem’--how rare linguistic variants can spread through a community (Sapir 1921).Previous studies (Nettle 1999) of the threshold problem have focused on learners with categorical grammars. However, such learnerscannot demonstrate intraspeaker variation during language change (Weinreich, Labov, & Herzog 1968). We show that although asocial network model (Barabási & Albert 1999) of learners with probabilistic grammars (Yang 2002) can account for intraspeakervariation, it cannot solve the threshold problem.Benjamin V. Tucker (University of Arizona) Session 100Acoustic phonetic description of ChemehueviPhonetic investigation of Uto-Aztecan languages is sparse. Here I provide a phonetic description of Chemehuevi, a southern Numiclanguage of the Shoshonean branch of Uto-Aztecan. Previous work on Chemehuevi describes the phonology but not the phonetics(Press 1974, 1979; Major 2005). My phonetic investigation addresses the following issues raised in previous descriptions of thephonology: (1) What is the relation between use of coronal fricatives and affricates? (2) How vowels are distributed across speakers?(3) Does Chemehuevi have an /e/ phoneme? (4) Are there word-final voiceless vowels? This study offers a qualitative andquantitative phonetic description of Chemehuevi.Alina Twist (University of Arizona) Session 22Experimental evidence for the productivity of nonconcatenative morphology in MalteseAn elicitation experiment was designed to measure the relative productivity of nonconcatenative morphology in Maltese. Results169