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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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Events in Semantics

Event Semantics says that clauses in natural languages are descriptions of events. Why believe this?

Linguistics, Philosophy

Contributor(s): Alexander Williams
Dates:
Publisher: The Cambridge Handbook of the Philosophy of Language

Event Semantics (ES) says that clauses in natural languages are descriptions of events. Why believe this? The answer cannot be that we use clauses to talk about events, or that events are important in ontology or psychology. Other sorts of things have the same properties, but no special role in semantics. The answer must be that this view helps to explain the semantics of natural languages. But then, what is it to explain the semantics of natural languages? Here there are many approaches, differing on whether natural languages are social and objective or individual and mental; whether the semantics delivers truth values at contexts or just constraints on truth-evaluable thoughts; which inferences it should explain as formally provable, if any; and which if any grammatical patterns it should explain directly. The argument for ES will differ accordingly, as will the consequences, for ontology, psychology, or linguistics, of its endorsement. In this chapter I trace the outlines of this story, sketching four distinct arguments for the analysis that ES makes possible: with it we can treat a dependent phrase and its syntactic host as separate predicates of related or identical events. Analysis of this kind allows us to state certain grammatical generalizations, formalize patterns of entailment, provide an extensional semantics for adverbs, and most importantly to derive certain sentence meanings that are not easily derived otherwise. But in addition, it will systematically validate inferences that are unsound, if we think conventionally about events and semantics. The moral is, with ES we cannot maintain both an ordinary metaphysics and a truth-conditional semantics that is simple. Those who would accept ES, and draw conclusions about the world or how we view it, must therefore choose which concession to make. I discuss four notable choices.

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Transparency and language contact: The case of Haitian Creole, French, and Fongbe

Haitian Creole supports the hypothesis that language contact leads to more transparent relations between meaning and form.

Linguistics

Contributor(s): Luisa Seguin
Dates:
Publisher: Journal of Pidgin and Creole Languages 35(2)

When communicating speakers map meaning onto form. It would thus seem obvious for languages to show a one-to-one correspondence between meaning and form, but this is often not the case. This perfect mapping, i.e. transparency, is indeed continuously violated in natural languages, giving rise to zero-to-one, one-to-many, and many-to-one opaque correspondences between meaning and form. However, transparency is a mutating feature, which can be influenced by language contact. In this scenario languages tend to evolve and lose some of their opaque features, becoming more transparent. This study investigates transparency in a very specific contact situation, namely that of a creole, Haitian Creole, and its sub- and superstrate languages, Fongbe and French, within the Functional Discourse Grammar framework. We predict Haitian Creole to be more transparent than French and Fongbe and investigate twenty opacity features, divided into four categories, namely Redundancy (one-to-many), Fusion (many-to-one), Discontinuity (one meaning is split in two or more forms,) and Form-based Form (forms with no semantic counterpart: zero-to-one). The results indeed prove our prediction to be borne out: Haitian Creole only presents five opacity features out of twenty, while French presents nineteen and Fongbe nine. Furthermore, the opacity features of Haitian Creole are also present in the other two languages.

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There is a simplicity bias when generalising from ambiguous data

How do phonological learners choose among generalizations of differing complexity?

Linguistics

Contributor(s): Adam Liter
Non-ARHU Contributor(s): Karthik Durvasula
Dates:
Publisher: Phonology 37(2)

How exactly do learners generalize in the face of ambiguous data? While there has been a substantial amount of research studying the biases that learners employ, there has been very little work on what sorts of biases are employed in the face of data that is ambiguous between phonological generalizations with different degrees of complexity. In this article, we present the results from three artificial language learning experiments that suggest that, at least for phonotactic sequence patterns, learners are able to keep track of multiple generalizations related to the same segmental co-occurrences; however, the generalizations they learn are only the simplest ones consistent with the data.

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Null Objects in Korean: Experimental Evidence for the Argument Ellipsis Analysis

Experimental evidence supports an analysis of Null Object constructions in Korean as instances of object ellipsis.

Linguistics

Contributor(s): Jeffrey Lidz
Non-ARHU Contributor(s): Chung-hye Han, Kyeong-min Kim, Keir Moulton
Dates:

Null object (NO) constructions in Korean and Japanese have receiveddifferent accounts: as (a) argument ellipsis (Oku 1998, S. Kim 1999, Saito 2007, Sakamoto 2015), (b) VP-ellipsis after verb raising (Otani and Whitman 1991, Funakoshi 2016), or (c) instances of base-generated pro (Park 1997, Hoji 1998, 2003). We report results from two experiments supporting the argument ellipsis analysis for Korean. Experiment 1 builds on K.-M. Kim and Han’s (2016) finding of interspeaker variation in whether the pronoun ku can be bound by a quantifier. Results showed that a speaker’s acceptance of quantifier-bound ku positively correlates with acceptance of sloppy readings in NO sentences. We argue that an ellipsis account, in which the NO site contains internal structure hosting the pronoun, accounts for this correlation. Experiment 2, testing the recovery of adverbials in NO sentences, showed that only the object (not the adverb) can be recovered in the NO site, excluding the possibility of VP-ellipsis. Taken together, our findings suggest that NOs result from argument ellipsis in Korean.

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The structure of Polish numerically-quantified expressions

What is the syntax of "five witches" in Polish, with genitive on "witches", accusative on "five", and third-singular-neuter agreement on a verb? Paulina Lyskawa gives a new answer that manages to preserve ordinary theories of case and agreement.

Linguistics

Contributor(s): Paulina Lyskawa
Non-ARHU Contributor(s): Paulina Lyskawa
Dates:
Cross-linguistically, numerically-quantified expressions vary in terms of their internal syntactic structure (e.g. the category of the numeral, its position in the nominal projection) as well as interaction with the external syntax (e.g. occurring in the subject positions, determining agreement and concord). Here, I investigate Polish numerically-quantified expressions of the 5+ type, such as pięć czarownic ‘five witches’, focusing on three morphosyntactic properties: the genitive case on the quantified noun, the accusative case on the numeral, and the occurrence of 3sg neuter verbal agreement. I argue that all of these properties can be captured within existing theories of case and agreement, in terms of a null head that takes the quantified noun phrase as its complement, and a numeral phrase as its specifier. Genitive on the noun is structural, accusative on the numeral is licensed by a null preposition, and default agreement is a result of the case-discriminating nature of verbal agreement. This proposal has implications for the broader theory of agreement and case assignment in Slavic languages and beyond.

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Headedness and the Lexicon: The Case of Verb-to-Noun Ratios

Is there a correlation between the relative size of a lexical class, such as verbs in relation to nouns, and whether members of that class precede or follow a dependent in phrases they head? This paper finds that there is.

Linguistics

Contributor(s): Maria Polinsky
Non-ARHU Contributor(s): Lilla Magyar
Dates:
This paper takes a well-known observation as its starting point, that is, languages vary with respect to headedness, with the standard head-initial and head-final types well attested. Is there a connection between headedness and the size of a lexical class? Although this question seems quite straightforward, there are formidable methodological and theoretical challenges in addressing it. Building on initial results by several researchers, we refine our methodology and consider the proportion of nouns to simplex verbs (as opposed to light verb constructions) in a varied sample of 33 languages to evaluate the connection between headedness and the size of a lexical class. We demonstrate a robust correlation between this proportion and headedness. While the proportion of nouns in a lexicon is relatively stable, head-final/object-verb (OV)-type languages (e.g., Japanese or Hungarian) have a relatively small number of simplex verbs, whereas head-initial/verb-initial languages (e.g., Irish or Zapotec) have a considerably larger percentage of such verbs. The difference between the head-final and head-initial type is statistically significant. We, then, consider a subset of languages characterized as subject-verb-object (SVO) and show that this group is not uniform. Those SVO languages that have strong head-initial characteristics (as shown by the order of constituents in a set of phrases and word order alternations) are characterized by a relatively large proportion of lexical verbs. SVO languages that have strong head-final traits (e.g., Mandarin Chinese) pattern with head-final languages, and a small subset of SVO languages are genuinely in the middle (e.g., English, Russian). We offer a tentative explanation for this headedness asymmetry, couched in terms of informativity and parsing principles, and discuss additional evidence in support of our account. All told, the fewer simplex verbs in head-final/OV-type languages is an adaptation in response to their particular pattern of headedness. The object-verb/verb-object (OV/VO) difference with respect to noun/verb ratios also reveals itself in SVO languages; some languages, Chinese and Latin among them, show a strongly OV ratio, whereas others, such as Romance or Bantu, are VO-like in their noun/verb ratios. The proportion of nouns to verbs thus emerges as a new linguistic characteristic that is correlated with headedness.

Enough time to get results? An ERP investigation of prediction with complex events

How quickly can verb-argument relations be computed to impact predictions of a subsequent argument? This paper examines the question by comparing two kinds of compound verbs in Mandarin, and neural responses to the following direct object.

Linguistics

Dates:
How quickly can verb-argument relations be computed to impact predictions of a subsequent argument? We take advantage of the substantial differences in verb-argument structure provided by Mandarin, whose compound verbs encode complex event relations, such as resultatives (kid bit-broke lip: 'the kid bit his lip such that it broke') and coordinates (store owner hit-scolded employee 'the store owner hit and scolded an employee'). We tested sentences in which the object noun could be predicted on the basis of the preceding compound verb, and used N400 responses to the noun to index successful prediction. By varying the delay between verb and noun, we show that prediction is delayed in the resultative context (broken-BY-biting) relative to the coordinate one (hitting-AND-scolding). These results present a first step towards temporally dissociating the fine-grained subcomputations required to parse and interpret verb-argument relations.

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Syntactic category constrains lexical access in speaking

When we choose which word to speak, do nouns and verbs compete, when the express similar concepts? New evidence says No: syntactic category plays a key role in limiting lexical access.

Linguistics

Contributor(s): Colin Phillips
Non-ARHU Contributor(s): Shota Momma, Julia Buffinton, Bob Slevc
Dates:
We report two experiments that suggest that syntactic category plays a key role in limiting competition in lexical access in speaking. We introduce a novel sentence-picture interference (SPI) paradigm, and we show that nouns (e.g., running as a noun) do not compete with verbs (e.g., walking as a verb) and verbs do not compete with nouns in sentence production, regardless of their conceptual similarity. Based on this finding, we argue that lexical competition in production is limited by syntactic category. We also suggest that even complex words containing category-changing derivational morphology can be stored and accessed together with their final syntactic category information. We discuss the potential underlying mechanism and how it may enable us to speak relatively fluently.

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Modeling the learning of the Person Case Constraint

Adam Liter and Naomi Feldman show that the Person Case Constraint can be learned on the basis of significantly less data, if the constraint is represented in terms of feature bundles.

Linguistics

Dates:
Many domains of linguistic research posit feature bundles as an explanation for various phenomena. Such hypotheses are often evaluated on their simplicity (or parsimony). We take a complementary approach. Specifically, we evaluate different hypotheses about the representation of person features in syntax on the basis of their implications for learning the Person Case Constraint (PCC). The PCC refers to a phenomenon where certain combinations of clitics (pronominal bound morphemes) are disallowed with ditransitive verbs. We compare a simple theory of the PCC, where person features are represented as atomic units, to a feature-based theory of the PCC, where person features are represented as feature bundles. We use Bayesian modeling to compare these theories, using data based on realistic proportions of clitic combinations from child-directed speech. We find that both theories can learn the target grammar given enough data, but that the feature-based theory requires significantly less data, suggesting that developmental trajectories could provide insight into syntactic representations in this domain.

Hope for syntactic bootstrapping

Some mental state verbs take a finite clause as their object, while others take an infinitive, and the two groups differ reliably in meaning. Remarkably, children can use this correlation to narrow down the meaning of an unfamiliar verb.

Linguistics

Contributor(s): Valentine Hacquard, Jeffrey Lidz
Non-ARHU Contributor(s): Kaitlyn Harrigan (*15)
Dates:
Publisher: Language

We explore children’s use of syntactic distribution in the acquisition of attitude verbs, such as think, want, and hope. Because attitude verbs refer to concepts that are opaque to observation but have syntactic distributions predictive of semantic properties, we hypothesize that syntax may serve as an important cue to learning their meanings. Using a novel methodology, we replicate previous literature showing an asymmetry between acquisition of think and want, and we additionally demonstrate that interpretation of a less frequent attitude verb, hope, patterns with type of syntactic complement. This supports the view that children treat syntactic frame as informative about an attitude verb’s meaning

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