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Research

Research at our top-ranked department spans syntax, semantics, phonology, language acquisition, computational linguistics, psycholinguistics and neurolinguistics. 

Connections between our core competencies are strong, with theoretical, experimental and computational work typically pursued in tandem.

A network of collaboration at all levels sustains a research climate that is both vigorous and friendly. Here new ideas develop in conversation, stimulated by the steady activity of our labs and research groups, frequent student meetings with faculty, regular talks by local and invited scholars and collaborations with the broader University of Maryland language science community, the largest and most integrated language science research community in North America.

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Hyper-active gap filling

Speakers of verb-final languages (German, Japanese) are able to construct rich representations of a clause even before the verb arrives. Akira Omaki and collaborators show that the same is true in verb-medial languages (English, Mandarin).

Linguistics

Non-ARHU Contributor(s): Akira Omaki, Imogen Davidson White, Myles Dakan, Aaron Apple
Dates:
Much work has demonstrated that speakers of verb-final languages are able to construct rich syntactic representations in advance of verb information. This may reflect general architectural properties of the language processor, or it may only reflect a language-specific adaptation to the demands of verb-finality. The present study addresses this issue by examining whether speakers of a verb-medial language (English) wait to consult verb transitivity information before constructing filler-gap dependencies, where internal arguments are fronted and hence precede the verb. This configuration makes it possible to investigate whether the parser actively makes representational commitments on the gap position before verb transitivity information becomes available. A key prediction of the view that rich pre-verbal structure building is a general architectural property is that speakers of verb-medial languages should predictively construct dependencies in advance of verb transitivity information, and therefore that disruption should be observed when the verb has intransitive subcategorization frames that are incompatible with the predicted structure. In three reading experiments (selfpaced and eye-tracking) that manipulated verb transitivity, we found evidence for reading disruption when the verb was intransitive, although no such reading difficulty was observed when the critical verb was embedded inside a syntactic island structure, which blocks filler-gap dependency completion. These results are consistent with the hypothesis that in English, as in verb-final languages, information from preverbal noun phrases is sufficient to trigger active dependency completion without having access to verb transitivity information.

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Relation-sensitive retrieval: Evidence from bound variable pronouns

Memory for prior context in language comprehension makes use of nonrelational cues, like "is a noun phrase." But does it also use relational cues, like "c-commands x"? Kush says Yes, with a processing study of bound-variable anaphora.

Linguistics

Non-ARHU Contributor(s): Dave Kush
Dates:
Formal grammatical theories make extensive use of syntactic relations (e.g. c-command, Reinhart, 1983) in the description of constraints on antecedent-anaphor dependencies. Recent research has motivated a model of processing that exploits a cue-based retrieval mechanism in content-addressable memory (e.g. Lewis, Vasishth, & Van Dyke, 2006) in which item-to-item syntactic relations such as c-command are difficult to use as retrieval cues. As such, the c-command constraints of formal grammars are predicted to be poorly implemented by the retrieval mechanism. We tested whether memory access mechanisms are able to exploit relational information by investigating the processing of bound variable pronouns, a form of anaphoric dependency that imposes a c-command restriction on antecedent-pronoun relations. A quantificational NP (QP, e.g., no janitor) must c-command a pronoun in order to bind it. We contrasted the retrieval of QPs with the retrieval of referential NPs (e.g. the janitor), which can co-refer with a pronoun in the absence of c-command. In three off-line judgment studies and two eye-tracking studies, we show that referential NPs are easily accessed as antecedents, irrespective of whether they c-command the pronoun, but that quantificational NPs are accessed as antecedents only when they c-command the pronoun. These results are unexpected under theories that hold that retrieval exclusively uses a limited set of content features as retrieval cues. Our results suggest either that memory access mechanisms can make use of relational information as a guide for retrieval, or that the set of features that is used to encode syntactic relations in memory must be enriched.

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Categorical effects in fricative perception are reflected in cortical source information

Phonetic discrimination is affected by phonological category more for consonants than it is for vowels. But what about fricatives in particular? Sol Lago and collaborators provide evidence from ERF and MEG.

Linguistics

Contributor(s): William Idsardi
Non-ARHU Contributor(s): Sol Lago, Mathias Scharinger, Yakov Kronrod
Dates:
Previous research in speech perception has shown that category information affects the discrimination of consonants to a greater extent than vowels. However, there has been little electrophysiological work on the perception of fricative sounds, which are informative for this contrast as they share properties with both consonants and vowels. In the current study we address the relative contribution of phonological and acoustic information to the perception of sibilant fricatives using event-related fields (ERFs) and dipole modeling with magnetoencephalography (MEG). We show that the field strength of neural responses peaking approximately 200ms after sound onset co-varies with acoustic factors, while the cortical localization of earlier M100 responses suggests a stronger influence of phonological categories. We propose that neural equivalents of categorical perception for fricative sounds are best seen using localization measures, and that spectral cues are spatially coded in human cortex.

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Agreement attraction in Spanish comprehension

Like speakers of English, speakers of Spanish find certain errors of agreement initially acceptable, despite the richer morphology of the language.

Linguistics

Non-ARHU Contributor(s): Sol Lago, Diego E. Shalom, Mariano Sigman
Dates:
Previous studies have found that English speakers experience attraction effects when comprehending subject–verb agreement, showing eased processing of ungrammatical sentences that contain a syntactically unlicensed but number-matching noun. In four self-paced reading experiments we examine whether attraction effects also occur in Spanish, a language where agreement morphology is richer and functionally more significant. We find that despite having a richer morphology, Spanish speakers show reliable attraction effects in comprehension, and that these effects are strikingly similar to those previously found in English in their magnitude and distributional profile. Further, we use distributional analyses to argue that cue-based memory retrieval is used as an error-driven mechanism in comprehension. We suggest that cross-linguistic similarities in agreement attraction result from speakers deploying repair or error-driven mechanisms uniformly across languages.

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Aligning grammatical theories and processing models

How should theories of grammar relate to models of language processing?

Linguistics

Contributor(s): Colin Phillips
Non-ARHU Contributor(s): Shevaun Lewis
Dates:
We address two important questions about the relationship between theoretical linguistics and psycholinguistics. First, do grammatical theories and language processing models describe separate cognitive systems, or are they accounts of different aspects of the same system? We argue that most evidence is consistent with the one-system view. Second, how should we relate grammatical theories and language processing models to each other?

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Arguments in Syntax and Semantics

A primer on the fundamentals of argument structure in syntax and semantics.

Linguistics

Contributor(s): Alexander Williams
Dates:
Publisher: Cambridge University Press
Argument structure – the pattern of underlying relations between a predicate and its dependents – is at the base of syntactic theory and the theory of the interface with semantics. This comprehensive guide explores the motives for thematic and event-structural decomposition, and its relation to structure in syntax. It also discusses broad patterns in the linking of syntactic to semantic relations, and includes insightful case studies on passive and resultative constructions. Semantically explicit and syntactically impartial, with a careful, interrogative approach, Williams clarifies notions of argument within both lexicalist and nonlexicalist approaches.

Competence and Performance in the Development of Principle C

"She likes Susan" cannot normally be used to say that Susan likes herself, a fact known as Principle C. Megan Sutton demonstrates knowledge of this in kids as young as two-and-a-half.

Linguistics

Non-ARHU Contributor(s): Megan Sutton
Dates:
In order to understand the nature of a given linguistic phenomena in the adult grammar, language acquisition research explores how children’s competence with respect to such a phenomena develops. However, diagnosing competence can be challenging because it is not directly observable. Researchers only have access to performance, which is mediated by additional factors and is not a direct reflection of competence. In this dissertation, I explore a case study of children’s early syntactic knowledge. My in-depth analysis of Principle C at 30 months provides novel insights into diagnostics for underlying competence by utilizing two distinct methods of analysis. The first analysis explores alternative mechanisms that have been proposed to account for early Principle C effects. By comparing across multiple linguistic contexts, I show that Principle C knowledge is the only mechanism which can account for all observed performance. The second analysis explores the deployment processes that are required to implement competence in performance. I present a novel analytic approach to identifying underlying knowledge which utilizes independent measures of these deployment processes. I show that individual differences in syntactic processing predict individual differences in interpretation, implicating syntactic processing in Principle C performance at 30 months. Together, these findings extend our knowledge of the developmental pattern that characterizes Principle C, which can contribute to debates about the origin of this constraint as part of the grammar. This research provides new depth to investigations of children’s early syntactic knowledge by highlighting new methods for diagnosing competence from observed performance.

Case in Sakha: Are two modalities really necessary?

Ted and Omer rebut the view that case morphology in Sakha expones two kinds of syntactic dependency: both a relation between two DPs, and a relation between one DP and a functional head. They argue that the former is enough.

Linguistics

Contributor(s): Omer Preminger
Non-ARHU Contributor(s): Theodore Levin
Dates:
Baker and Vinokurova (2010) argue that the distribution of morphologically observable case in Sakha (Turkic) requires a hybrid account, which involves recourse both to configurational rules of case assignment (Bittner and Hale 1996; Marantz 1991; Yip et al. 1987), and to case assignment by functional heads (Chomsky 2000, 2001). In this paper, we argue that this conclusion is under-motivated, and present an alternative account of case in Sakha that is entirely configurational. The central innovation lies in abandoning Chomsky’s (2000, 2001) assumptions regarding the interaction of case and agreement, and replacing them with Bobaljik’s (2008) and Preminger’s (2011) independently motivated alternative, nullifying the need to appeal to case assignment by functional heads in accounting for the Sakha facts.

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Bootstrapping attitudes

How can children acquiring a first language distinguish semantic from pragmatic contributions to what a speaker means?

Linguistics

Contributor(s): Valentine Hacquard
Dates:
This paper explores two classic problems at the semantics-pragmatics interface from a learner’s perspective. First, the meaning that speakers convey often goes beyond the literal meaning of the sentences they utter. Second, not all content encoded in utterances has equal standing: some is foregrounded, some backgrounded. Yet a sentence does not formally distinguish what a speaker asserts from what she presupposes or merely implicates. For this reason, the child acquiring a language has a daunting task. She must both extract the literalmeaning from the overall message, and separate the background assumptions that are linguistically required from those that are incidental. This paper discusses the ways in which the syntax might guide the child with this daunting task, through a few case studies on children’s acquisition of attitude verbs.

Agents in Mandarin and Igbo resultatives

The semantics of subjecthood in resultative constructions, comparing Igbo to English and Mandarin.

Linguistics

Contributor(s): Alexander Williams
Dates:
Publisher: Oxford University Press
A resultative complex predicate may include an agentive verb, as "cut open" includes "cut". I ask how best to describe variation between Mandarin, Igbo and English in two features of such resultatives. First, while they can generally occur in unaccusative clauses in Mandarin, with the implied agent unexpressed, this is never possible in English, and in Igbo it depends on the verb. Second, when they inhabit a transitive clause the subject must name the agent of the verb's event in Igbo and English, but not Mandarin. Initially this suggests that agentive verbs have their agents as lexical arguments, sometimes in Igbo and always in English. But this leads to unattractive complications. I discuss an alternative, of taking the meaning of the construction to be somewhat narrower in Igbo and English than Mandarin.