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In the linguistic literature, the term theme has several interpretations, one of which relates to discourse analysis and two others to sentence structure. In a more general (or global) sense, one may speak about the theme or topic (or topics) of a text (or discourse), that is, to analyze relations going beyond the sentence boundary and try to identify some characteristic subject(s) for the text (discourse) as a whole. This analysis is mostly a matter of the domain of information retrieval and only partially takes into account linguistically based considerations. The main linguistically based usage of the term theme concerns relations within the sentence. Theme is understood to be one of the (syntactico-) semantic relations and is used as the label of one of the arguments of the verb; the whole network of these relations is called thematic relations or roles (or, in the terminology of Chomskyan generative theory, theta roles and theta grids). Alternatively, from the point of view of the communicative function of the language reflected in the information structure of the sentence, the theme (or topic) of a sentence is distinguished from the rest of it (rheme, or focus, as the case may be) and attention is paid to the semantic consequences of the dichotomy (especially in relation to presuppositions and negation) and its realization (morphological, syntactic, prosodic) in the surface shape of the sentence. In some approaches to morphosyntactic analysis the term theme is also used referring to the part of the word to which inflections are added, especially composed of the root and an added vowel.
Paul de Lacy
Phonology has both a taxonomic/descriptive and cognitive meaning. In the taxonomic/descriptive context, it refers to speech sound systems. As a cognitive term, it refers to a part of the brain’s ability to produce and perceive speech sounds. This article focuses on research in the cognitive domain.
The brain does not simply record speech sounds and “play them back.” It abstracts over speech sounds, and transforms the abstractions in nontrivial ways. Phonological cognition is about what those abstractions are, and how they are transformed in perception and production.
There are many theories about phonological cognition. Some theories see it as the result of domain-general mechanisms, such as analogy over a Lexicon. Other theories locate it in an encapsulated module that is genetically specified, and has innate propositional content. In production, this module takes as its input phonological material from a Lexicon, and refers to syntactic and morphological structure in producing an output, which involves nontrivial transformation. In some theories, the output is instructions for articulator movement, which result in speech sounds; in other theories, the output goes to the Phonetic module. In perception, a continuous acoustic signal is mapped onto a phonetic representation, which is then mapped onto underlying forms via the Phonological module, which are then matched to lexical entries.
Exactly which empirical phenomena phonological cognition is responsible for depends on the theory. At one extreme, it accounts for all human speech sound patterns and realization. At the other extreme, it is little more than a way of abstracting over speech sounds. In the most popular Generative conception, it explains some sound patterns, with other modules (e.g., the Lexicon and Phonetic module) accounting for others. There are many types of patterns, with names such as “assimilation,” “deletion,” and “neutralization”—a great deal of phonological research focuses on determining which patterns there are, which aspects are universal and which are language-particular, and whether/how phonological cognition is responsible for them.
Phonological computation connects with other cognitive structures. In the Generative T-model, the phonological module’s input includes morphs of Lexical items along with at least some morphological and syntactic structure; the output is sent to either a Phonetic module, or directly to the neuro-motor interface, resulting in articulator movement. However, other theories propose that these modules’ computation proceeds in parallel, and that there is bidirectional communication between them.
The study of phonological cognition is a young science, so many fundamental questions remain to be answered. There are currently many different theories, and theoretical diversity over the past few decades has increased rather than consolidated. In addition, new research methods have been developed and older ones have been refined, providing novel sources of evidence. Consequently, phonological research is both lively and challenging, and is likely to remain that way for some time to come.
When the phonological form of a morpheme—a unit of meaning that cannot be decomposed further into smaller units of meaning—involves a particular melodic pattern as part of its sound shape, this morpheme is specified for tone. In view of this definition, phrase- and utterance-level melodies—also known as intonation—are not to be interpreted as instances of tone. That is, whereas the question “Tomorrow?” may be uttered with a rising melody, this melody is not tone, because it is not a part of the lexical specification of the morpheme tomorrow. A language that presents morphemes that are specified with specific melodies is called a tone language. It is not the case that in a tone language every morpheme, content word, or syllable would be specified for tone. Tonal specification can be highly restricted within the lexicon. Examples of such sparsely specified tone languages include Swedish, Japanese, and Ekagi (a language spoken in the Indonesian part of New Guinea); in these languages, only some syllables in some words are specified for tone. There are also tone languages where each and every syllable of each and every word has a specification. Vietnamese and Shilluk (a language spoken in South Sudan) illustrate this configuration. Tone languages also vary greatly in terms of the inventory of phonological tone forms. The smallest possible inventory contrasts one specification with the absence of specification. But there are also tone languages with eight or more distinctive tone categories. The physical (acoustic) realization of the tone categories is primarily fundamental frequency (F0), which is perceived as pitch. However, often other phonetic correlates are also involved, in particular voice quality. Tone plays a prominent role in the study of phonology because of its structural complexity. That is, in many languages, the way a tone surfaces is conditioned by factors such as the segmental composition of the morpheme, the tonal specifications of surrounding constituents, morphosyntax, and intonation. On top of this, tone is diachronically unstable. This means that, when a language has tone, we can expect to find considerable variation between dialects, and more of it than in relation to other parts of the sound system.
Cécile B. Vigouroux
Despite their large demographic size, intra-continental African migrations have hardly been taken into account in the theorizing on migration in transnational studies and related fields. Research questions have been framed predominantly from a South-to-North perspective on population movements. This may be a consequence of the fact that the extent and complexity of modern population movements and contacts within Africa are hard to assess, owing mainly to lack of reliable data. For sociolinguists the challenge is even greater, partly because of the spotty knowledge of linguistic diversity in the continent and the scarcity of adequate sociolinguistic descriptions of the ways in which Africans manage their language repertoires. Despite these limitations, a sociolinguistics of intra-continental African migrations will contribute significantly to a better understanding of the conditions, nature, and periodicity of population contacts and interactional dynamics. It will help explain why geographic mobility entails reshaping sociocultural practices, including the language repertoires of both the migrants and the people they come in contact with. Moreover, the peculiarity of African economies, which rely heavily on informal non-institutionalized practices, prompts a rethinking of assumptions regarding the acquisition of the host country’s language(s) as the primary facilitator of the migrants’ socioeconomic inclusion. A sociolinguistic understanding of migrations within Africa can help to formulate new questions and enrich the complex pictures that the study of other parts of the world has already shaped.
“Tupian” is a common term applied by linguists to a linguistic stock of seven families spread across great parts of South America. Tupian languages share a large number of structural and morphological similarities which make genetic relationship very probable. Four families (Arikém, Mondé, Tuparí, and Raramarama-Poruborá) are still limited to the Madeira-Guaporé region in Brazil, considered by some scholars to be the Tupí homeland. Other families and branches would have migrated, in ancient times, down the Amazon (Mundurukú, Mawé) and up the Xingú River (Juruna, Awetí). Only the Tupí-Guarani branch, which makes up about 40 living languages, mainly spread to the south.
Two Tupí-Guaraní languages played an important part in the Portuguese and Spanish colonisation of South America, Tupinambá on the Brazilian coast and Guaraní in colonial Paraguay. In the early 21st century, Guaraní is spoken by more than six million non-Indian people in Paraguay and in adjacent parts of Argentina and Brazil.
Tupí-Guaraní (TG) is an artificial term used by linguists to denominate the family composed by eight subgroups of languages, one of them being the Guaraní subgroup and the other one the extinct Tupinambá and its varieties.
Important phonological characteristics of Tupian languages are nasality and the occurrence of a high central vowel /ɨ/, a glottal stop /ʔ/, and final consonants, especially plosives in coda position. Nasality seems to be a common characteristic of all branches of the family. Most of them show phenomena such as nasal harmony, also called nasal assimilation or regressive nasalization by some scholars.
Tupian languages have a rich morphology expressed mainly by suffixes and prefixes, though particles are also important to express grammatical categories. Verbal morphology is characterized by generally rich devices of valence-changing formations. Relational inflection is one of the most striking phenomena of TG nominal phrases. It allows marking the determination of a noun by a preceding adjunct, its syntactical transformation into a nominal predicate, or the absence of any relation. Relational inflection partly occurs also in other branches and families than Tupí-Guaraní. Verbal person marking is realized by prefixing in most languages; some languages of the Tuparí and Juruna family, however, use only free pronouns.
Tupian syntax is based on the predication of both verbs and nouns. Subordinate clauses, such as relative clauses, are produced by nominalization, while adverbial clauses are formed by specific particles or postpositions on the predicate. Traditional word order is SOV.
Stergios Chatzikyriakidis and Robin Cooper
Type theory is a regime for classifying objects (including events) into categories called types. It was originally designed in order to overcome problems relating to the foundations of mathematics relating to Russell’s paradox. It has made an immense contribution to the study of logic and computer science and has also played a central role in formal semantics for natural languages since the initial work of Richard Montague building on the typed λ-calculus. More recently, type theories following in the tradition created by Per Martin-Löf have presented an important alternative to Montague’s type theory for semantic analysis. These more modern type theories yield a rich collection of types which take on a role of representing semantic content rather than simply structuring the universe in order to avoid paradoxes.
Throughout the 20th century, structuralist and generative linguists have argued that the study of the language system (langue, competence) must be separated from the study of language use (parole, performance), but this view of language has been called into question by usage-based linguists who have argued that the structure and organization of a speaker’s linguistic knowledge is the product of language use or performance. On this account, language is seen as a dynamic system of fluid categories and flexible constraints that are constantly restructured and reorganized under the pressure of domain-general cognitive processes that are not only involved in the use of language but also in other cognitive phenomena such as vision and (joint) attention. The general goal of usage-based linguistics is to develop a framework for the analysis of the emergence of linguistic structure and meaning.
In order to understand the dynamics of the language system, usage-based linguists study how languages evolve, both in history and language acquisition. One aspect that plays an important role in this approach is frequency of occurrence. As frequency strengthens the representation of linguistic elements in memory, it facilitates the activation and processing of words, categories, and constructions, which in turn can have long-lasting effects on the development and organization of the linguistic system. A second aspect that has been very prominent in the usage-based study of grammar concerns the relationship between lexical and structural knowledge. Since abstract representations of linguistic structure are derived from language users’ experience with concrete linguistic tokens, grammatical patterns are generally associated with particular lexical expressions.
Language is a system that maps meanings to forms, but the mapping is not always one-to-one. Variation means that one meaning corresponds to multiple forms, for example faster ~ more fast. The choice is not uniquely determined by the rules of the language, but is made by the individual at the time of performance (speaking, writing). Such choices abound in human language. They are usually not just a matter of free will, but involve preferences that depend on the context, including the phonological context. Phonological variation is a situation where the choice among expressions is phonologically conditioned, sometimes statistically, sometimes categorically. In this overview, we take a look at three studies of variable vowel harmony in three languages (Finnish, Hungarian, and Tommo So) formulated in three frameworks (Partial Order Optimality Theory, Stochastic Optimality Theory, and Maximum Entropy Grammar). For example, both Finnish and Hungarian have Backness Harmony: vowels must be all [+back] or all [−back] within a single word, with the exception of neutral vowels that are compatible with either. Surprisingly, some stems allow both [+back] and [−back] suffixes in free variation, for example, analyysi-na ~ analyysi-nä ‘analysis-
Harry van der Hulst
The subject of this article is vowel harmony. In its prototypical form, this phenomenon involves agreement between all vowels in a word for some phonological property (such as palatality, labiality, height or tongue root position). This agreement is then evidenced by agreement patterns within morphemes and by alternations in vowels when morphemes are combined into complex words, thus creating allomorphic alternations. Agreement involves one or more harmonic features for which vowels form harmonic pairs, such that each vowel has a harmonic counterpart in the other set. I will focus on vowels that fail to alternate, that are thus neutral (either inherently or in a specific context), and that will be either opaque or transparent to the process. We will compare approaches that use underspecification of binary features and approaches that use unary features. For vowel harmony, vowels are either triggers or targets, and for each, specific conditions may apply. Vowel harmony can be bidirectional or unidirectional and can display either a root control pattern or a dominant/recessive pattern.
Matthew J. Gordon
William Labov (b. 1927) is an American linguist who pioneered the study of variationist sociolinguistics. Born and raised in northern New Jersey, Labov studied English and philosophy at Harvard University (BA, 1948) and worked as an industrial chemist for several years before entering graduate school in linguistics at Columbia University in 1961. He completed his PhD in 1964, under the direction of Uriel Weinreich. He worked at Columbia until 1971, when he joined the faculty of the University of Pennsylvania, where he taught until his retirement in 2014.
Labov’s influence on the field began with research he conducted in graduate school. His study of changing pronunciations on Martha’s Vineyard, the subject of his master’s thesis, introduced a method for observing sound change in progress and broke with tradition by exploring social motivations for linguistic innovations. For his PhD dissertation, Labov carried out a study of dialect patterns on the Lower East Side of New York City. Using a systematic, quantitative methodology, he demonstrated that linguistic variation is socially stratified, such that the use of pronunciation features (e.g., dropping of post-vocalic /r/) correlates with social class, ethnicity, etc. in regular patterns. Labov’s early research was greatly influential and inspired many scholars to carry out similar projects in other communities. The paradigm came to be known as variationist sociolinguistics.
Much of Labov’s scholarship seeks to advance our understanding of language change. Historical linguists traditionally study completed linguistic changes, often long after they occurred, but Labov developed a method for examining active changes through a quantitative comparison of speakers representing several generations. This approach produces a new perspective on the change process by revealing intermediate stages. Labov has brought insights from this research to bear on theoretical debates within historical linguistics and the field more broadly. His work in this area has also documented many active sound changes in American English. Among these changes are innovations underway in particular dialects, such as the vowel changes in Philadelphia, as well as broader regional patterns, such as the Northern Cities Shift heard in the Great Lakes states.
Throughout his career, social justice concerns have fueled Labov’s research. He has sought to demonstrate that the speech of stigmatized groups is as systematic and rule-governed as any other. He led a pioneering study in Harlem in the late 1960s that shone new light on African American English, demonstrating, for example, that grammatical usages like the deletion of the copula (e.g., He fast) are subject to regular constraints. Labov has served as an expert witness in court and before the U.S. Congress to share insights from his study of African American English. He has also worked to promote literacy for speakers of non-standard dialects, carrying out research on reading and developing material for the teaching of reading to these populations.
Speakers of most languages comprehend and produce a very large number of morphologically complex words. But how? There is a tension between two facts. First, speakers can comprehend and produce novel words, which they have never experienced and therefore could not have stored in memory. For example, English speakers readily generate the plural form of wug. These novel words often look like they are composed of recognizable parts, such as the plural marker -s. Second, speakers also comprehend and produce many words that cannot be straightforwardly decomposed into parts, such as bought or brunch. Morphology is the paradigm example of a quasi-regular domain, full of only partially productive, exception-ridden patterns, many of which nonetheless appear to be learned and used by speakers and listeners. Quasi-regularity has made morphology a fruitful testing ground for alternative views of how the mind works.
Every major approach to the nature of the mind has attempted to tackle morphological processing. These approaches range from symbolic rule-based approaches to connectionist networks of simple neuron-like processing units to clouds of richly specified holistic exemplars. They vary in their assumptions about the nature of mental representations; particularly, those comprising long-term memory of language. They also vary in the computations that the mind is thought to perform; including the computations that are performed by a speaker attempting to produce or comprehend a word. In challenging all major approaches to cognition with its intricate patterns, morphology continues to provide a valuable window onto the nature of the mind.
Edgar W. Schneider
English clearly is the world’s most widely used language in the early 21st century: the language of formal and other interactions in very many countries, the main tool of globalization, and the default choice for transnational communication. Initially, the expansion of the British Empire, beginning in the 17th century and driven by various motives for colonization, brought it to all continents: North America and the Caribbean, the southern hemisphere (including Australia, New Zealand, South Africa, and other territories), and also Asia, Africa, and the Pacific region. In contact with indigenous languages new, increasingly stable and localized varieties of English with properties and functions of their own have grown in many countries. These varieties have come to be summarily labeled as “World Englishes,” and a new subdiscipline in linguistics has emerged since the 1980s investigating their features and conditions of use. They have conventionally been classified according to their status in specific countries and territories, as native, second, or foreign languages, respectively, and several theoretical models have been proposed to account for their status, developments, and mutual relationships. Vibrant changes of the recent past, broadly associated with a sociolinguistics of globalization and increasing superdiversity, have continued to push the dissemination of English to new contexts, both socially and individually, and a “post-varieties approach” is now being envisaged.
A wide range of facts and issues can be discussed and investigated when addressing World Englishes. The basic perspective, obviously, concerns the sociohistorical diffusion of the language: Who brought English to which territories, when, and why? And how has the language been transformed in different places? It has been argued convincingly (in the “Dynamic Model” of the evolution of Postcolonial Englishes) that despite all geographical, historical, and social differences, amazing similarities in the emergence of these new varieties, grounded in principles of sociolinguistic accommodation and identity transformations, can be identified. In all contexts and territories, contact with local and other languages has been determinative, usually via the process of second-language acquisition of English by indigenous people. Language policies and their implementation by means of strategies of language pedagogy have played a major role, and all of this is shaped decisively by linguistic attitudes—the question of what speakers and authorities believe about such emerging varieties and their relationship to norms of correctness. Also, specific structural patterns and types of linguistic phenomena can be observed in all these varieties on all levels of language organization.
Consequently, the notion of “English” today needs to be retuned from thinking of it as a single, monolithic entity, a linguistic “standard” and a reference system, to understanding it as a set of related, structurally overlapping, but also distinct varieties, the products of a fundamental “glocalization” process with variable, context-dependent outcomes.
Rosemary G. Beam de Azcona
Zapotecan languages belong to the Otomanguean stock and consist of two major subgroups: Zapotec and Chatino. They are primarily spoken in Oaxaca, Mexico, and elsewhere in diaspora, particularly in California but also in other parts of the United States and Mexico. Zapotecan languages are spoken in a contiguous area and although all are related genetically, many languages exist in regional diffusion zones such that new changes spread areally. Similarly, individual Zapotecan “languages” often consist of dialect continua.
Zapotecan languages are tonal and also have contrastive phonation types, such as a contrast between modal (V), checked (VɁ), and rearticulated (VɁV) vowels. Some Valley Zapotec languages also have breathy voice, partially due to contact with Mixe. Vowel nasalization is a prominent feature of Chatino and a marginal feature of some Zapotec languages. Consonants usually fall into two contrastive series in Zapotec, commonly termed “fortis” and “lenis,” though the phonetic realizations of these vary from language to language. The historical loss of unstressed vowels is common in many Zapotecan languages, though there are individual Zapotec and Chatino languages that retain them. A stress shift from the final syllable (retained in Chatino) to the first (usually penultimate) syllable of the root (in Zapotec) makes the languages with vowel loss more dissimilar from each other, since a different syllable survives in Chatino versus Zapotec.
Zapotecan languages are head-initial languages with VSO order and are typically head-marking. Common morphology includes pre-posed TAM markers and post-posed person markers on the verb, and derivational prefixes on nouns. An emergent class of prepositions is developing out of what were historically relational nouns. Stative forms of verbs are more common than true adjectives, while numerals have many verbal properties.
Like other Meso-American languages, Zapotecan languages are currently experiencing both a golden age and a moment of unprecedented peril. There is an ever-increasing number of linguists who are native speakers of these languages, and the community of language activists, including students and educators, is growing stronger in Oaxaca and Mexico at large, and indeed worldwide, including where Zapotecan languages are spoken by immigrants. At the same time, the intense political and socioeconomic pressure on communities to shift to Spanish is greater than ever before, and the number of communities where children speak Zapotecan languages is ever shrinking. Children in communities where children speak Zapotecan languages at home are often chastised for doing so in school, which poses a continual threat. Zapotecan languages historically have been in contact with other Meso-American languages such as Nahuatl, Mixtec, Chontal, Mixe, Huave and Chinantec, among others. Today the vast majority of speakers of Zapotecan languages are at least bilingual in their language and Spanish, and many also speak English and/or other Meso-American languages. Zapotecan languages mostly show lexical borrowings from these other languages, and occasional grammatical borrowings. Regional varieties of Spanish show a Zapotecan substrate with numerous calques and interference on every level of the language from phonetics to pragmatics.
Eystein Dahl and Antonio Fábregas
Zero or null morphology refers to morphological units that are devoid of phonological content. Whether such entities should be postulated is one of the most controversial issues in morphological theory, with disagreements in how the concept should be delimited, what would count as an instance of zero morphology inside a particular theory, and whether such objects should be allowed even as mere analytical instruments.
With respect to the first problem, given that zero morphology is a hypothesis that comes from certain analyses, delimiting what counts as a zero morpheme is not a trivial matter. The concept must be carefully differentiated from others that intuitively also involve situations where there is no overt morphological marking: cumulative morphology, phonological deletion, etc.
About the second issue, what counts as null can also depend on the specific theories where the proposal is made. In the strict sense, zero morphology involves a complete morphosyntactic representation that is associated to zero phonological content, but there are other notions of zero morphology that differ from the one discussed here, such as absolute absence of morphological expression, in addition to specific theory-internal interpretations of what counts as null. Thus, it is also important to consider the different ways in which something can be morphologically silent.
Finally, with respect to the third side of the debate, arguments are made for and against zero morphology, notably from the perspectives of falsifiability, acquisition, and psycholinguistics. Of particular impact is the question of which properties a theory should have in order to block the possibility that zero morphology exists, and conversely the properties that theories that accept zero morphology associate to null morphemes.
An important ingredient in this debate has to do with two empirical domains: zero derivation and paradigmatic uniformity. Ultimately, the plausibility that zero morphemes exist or not depends on the success at accounting for these two empirical patterns in a better way than theories that ban zero morphology.