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Derivational morphology is a type of word formation that creates new lexemes, either by changing syntactic category or by adding substantial new meaning (or both) to a free or bound base. Derivation may be contrasted with inflection on the one hand or with compounding on the other. The distinctions between derivation and inflection and between derivation and compounding, however, are not always clear-cut. New words may be derived by a variety of formal means including affixation, reduplication, internal modification of various sorts, subtraction, and conversion. Affixation is best attested cross-linguistically, especially prefixation and suffixation. Reduplication is also widely found, with various internal changes like ablaut and root and pattern derivation less common. Derived words may fit into a number of semantic categories. For nouns, event and result, personal and participant, collective and abstract noun are frequent. For verbs, causative and applicative categories are well-attested, as are relational and qualitative derivations for adjectives. Languages frequently also have ways of deriving negatives, relational words, and evaluatives. Most languages have derivation of some sort, although there are languages that rely more heavily on compounding than on derivation to build their lexical stock. A number of topics have dominated the theoretical literature on derivation, including productivity (the extent to which new words can be created with a given affix or morphological process), the principles that determine the ordering of affixes, and the place of derivational morphology with respect to other components of the grammar. The study of derivation has also been important in a number of psycholinguistic debates concerning the perception and production of language.
Determiners are a nominal syntactic category distinct from both adjectives and nouns; they constitute a functional (aka closed or ‘minor’) category and they are typically located high inside the nominal phrasal structure.
From a syntactic point of view, the category of determiners is commonly understood to comprise the word classes of article, demonstrative, and quantifier, as well as non-adjectival possessives and some nominal agreement markers.
From a semantic point of view, determiners are assumed to function as quantifiers, especially within research informed by Generalized Quantifier Theory. However, this is a one-way entailment: although determiners in natural language are quantificational, their class contains only a subset of the logically possible quantifiers; this class is restricted by conservativity and other factors.
The tension between the ‘syntactic’ and the ‘semantic’ perspective on determiners results to a degree of terminological confusion: it is not always clear which lexical items the Determiner category includes or what the function of determiners is; moreover, there exists a tendency among syntacticians to view ‘Determiner’ as naming not a class, but a fixed position within a nominal phrasal template.
The study of determiners rose to prominence within grammatical theory during the ’80s both due to advances in semantic theorizing, primarily Generalized Quantifier Theory, and due to the generalization of the X' phrasal schema to functional (minor) categories. Some issues in the nature and function of determiners that have been addressed in theoretical and typological work with considerable success include the categorial status of determiners, their (non-)universality, their structural position and feature makeup, their role in argumenthood and their interaction with nominal predicates, and their relation to pronouns. Expectedly, issues in (in)definiteness, quantification, and specificity also figure prominently in research work on determiners.
The field of dialectology, the study of the language of an area or group of people, has a long tradition within linguistics. From the earliest dialect studies, a focus on rigorous methodological practices has been an ever-present component of this discipline. Traditional methodologies can be seen in the work of the early dialect atlases, which relied heavily on mail questionnaires or fieldworkers that would chronicle the pronunciation, grammatical features, and lexicon of residents of particular regions. More recent technological innovations, such as GIS and online survey methods and applications, have brought multidisciplinary approaches to the study of dialects, as well as allowing for broader and more robust studies of geographic areas and social groups.
The influence and interface of dialectology on various linguistic disciplines is noteworthy. Dialectological methods have most commonly been utilized in historical linguistics, sociolinguistics/language variation and change, and language endangerment/documentation. Within each of these disciplines, the adoption of methods from dialectology has allowed for the systematic study of language across geographic and social space, as well as across time.
Diglossia refers to a situation where two linguistic varieties coexist within a given speech community. One variety, labeled the ‘high variety’, is used in formal domains including education, while the other variety, labeled the ‘low variety’, is used principally in instances of informal extemporaneous communication. The domains of use, however, are not strictly separate and especially so with the increase in electronic modes of communication. This results in what has been described as diglossic code-switching, and the gradual encroaching of, in the case under consideration here, vernacular Arabic upon the domains of use of Standard Arabic.
While the genetic relationship between the two varieties is central in the definition of a classical diglossic situation as in the case of Arabic, the concept of diglossia has often been extended in the literature to cover situations of a functional distribution between languages that are genetically distant, such as with the situation of Spanish and Guaraní in Paraguay.
In North Africa, vernacular Arabic is in a classical diglossic distribution with Standard Arabic, while the Berber languages are often described as existing in a situation of extended diglossia with Arabic. However, distinguishing between diglossia as it exists between the Arabic dialects and Standard Arabic and the situation of bilingualism that involves Arabic, Berber, and European languages provides the best framework for describing the linguistic situation in North Africa. Diglossia is a key element in understanding the mechanisms of the region’s language contact and change as it plays a central role in shaping language attitude, language policy, and language planning.
Carol A. Fowler
The theory of speech perception as direct derives from a general direct-realist account of perception. A realist stance on perception is that perceiving enables occupants of an ecological niche to know its component layouts, objects, animals, and events. “Direct” perception means that perceivers are in unmediated contact with their niche (mediated neither by internally generated representations of the environment nor by inferences made on the basis of fragmentary input to the perceptual systems). Direct perception is possible because energy arrays that have been causally structured by niche components and that are available to perceivers specify (i.e., stand in 1:1 relation to) components of the niche. Typically, perception is multi-modal; that is, perception of the environment depends on specifying information present in, or even spanning, multiple energy arrays.
Applied to speech perception, the theory begins with the observation that speech perception involves the same perceptual systems that, in a direct-realist theory, enable direct perception of the environment. Most notably, the auditory system supports speech perception, but also the visual system, and sometimes other perceptual systems. Perception of language forms (consonants, vowels, word forms) can be direct if the forms lawfully cause specifying patterning in the energy arrays available to perceivers. In Articulatory Phonology, the primitive language forms (constituting consonants and vowels) are linguistically significant gestures of the vocal tract, which cause patterning in air and on the face. Descriptions are provided of informational patterning in acoustic and other energy arrays. Evidence is next reviewed that speech perceivers make use of acoustic and cross modal information about the phonetic gestures constituting consonants and vowels to perceive the gestures.
Significant problems arise for the viability of a theory of direct perception of speech. One is the “inverse problem,” the difficulty of recovering vocal tract shapes or actions from acoustic input. Two other problems arise because speakers coarticulate when they speak. That is, they temporally overlap production of serially nearby consonants and vowels so that there are no discrete segments in the acoustic signal corresponding to the discrete consonants and vowels that talkers intend to convey (the “segmentation problem”), and there is massive context-sensitivity in acoustic (and optical and other modalities) patterning (the “invariance problem”). The present article suggests solutions to these problems.
The article also reviews signatures of a direct mode of speech perception, including that perceivers use cross-modal speech information when it is available and exhibit various indications of perception-production linkages, such as rapid imitation and a disposition to converge in dialect with interlocutors.
An underdeveloped domain within the theory concerns the very important role of longer- and shorter-term learning in speech perception. Infants develop language-specific modes of attention to acoustic speech signals (and optical information for speech), and adult listeners attune to novel dialects or foreign accents. Moreover, listeners make use of lexical knowledge and statistical properties of the language in speech perception. Some progress has been made in incorporating infant learning into a theory of direct perception of speech, but much less progress has been made in the other areas.
Dispersion Theory concerns the constraints that govern contrasts, the phonetic differences that can distinguish words in a language. Specifically it posits that there are distinctiveness constraints that favor contrasts that are more perceptually distinct over less distinct contrasts. The preference for distinct contrasts is hypothesized to follow from a preference to minimize perceptual confusion: In order to recover what a speaker is saying, a listener must identify the words in the utterance. The more confusable words are, the more likely a listener is to make errors. Because contrasts are the minimal permissible differences between words in a language, banning indistinct contrasts reduces the likelihood of misperception.
The term ‘dispersion’ refers to the separation of sounds in perceptual space that results from maximizing the perceptual distinctiveness of the contrasts between those sounds, and is adopted from Lindblom’s Theory of Adaptive Dispersion, a theory of phoneme inventories according to which inventories are selected so as to maximize the perceptual differences between phonemes. These proposals follow a long tradition of explaining cross-linguistic tendencies in the phonetic and phonological form of languages in terms of a preference for perceptually distinct contrasts.
Flemming proposes that distinctiveness constraints constitute one class of constraints in an Optimality Theoretic model of phonology. In this context, distinctiveness constraints predict several basic phenomena, the first of which is the preference for maximal dispersion in inventories of contrasting sounds that first motivated the development of the Theory of Adaptive Dispersion. But distinctiveness constraints are formulated as constraints on the surface forms of possible words that interact with other phonological constraints, so they evaluate the distinctiveness of contrasts in context. As a result, Dispersion Theory predicts that contrasts can be neutralized or enhanced in particular phonological contexts. This prediction arises because the phonetic realization of sounds depends on their context, so the perceptual differences between contrasting sounds also depend on context. If the realization of a contrast in a particular context would be insufficiently distinct (i.e., it would violate a high-ranked distinctiveness constraint), there are two options: the offending contrast can be neutralized, or it can be modified (‘enhanced’) to make it more distinct.
A basic open question regarding Dispersion Theory concerns the proper formulation of distinctiveness constraints and the extent of variation in their rankings across languages, issues that are tied up with the questions about the nature of perceptual distinctiveness. Another concerns the size and nature of the comparison set of contrasting word-forms required to be able to evaluate whether a candidate output satisfies distinctiveness constraints.
Displacement is a ubiquitous phenomenon in natural languages. Grammarians often speak of displacement in cases where the rules for the canonical word order of a language lead to the expectation of finding a word or phrase in a particular position in the sentence whereas it surfaces instead in a different position and the canonical position remains empty: ‘Which book did you buy?’ is an example of displacement because the noun phrase ‘which book’, which acts as the grammatical object in the question, does not occur in the canonical object position, which in English is after the verb. Instead, it surfaces at the beginning of the sentence and the object position remains empty. Displacement is often used as a diagnostic for constituent structure because it affects only (but not all) constituents. In the clear cases, displaced constituents show properties associated with two distinct linear and hierarchical positions. Typically, one of these two positions c-commands the other and the displaced element is pronounced in the c-commanding position. Displacement also shows strong interactions with the path between the empty canonical position and the position where the element is pronounced: one often encounters morphological changes along this path and evidence for structural placement of the displaced constituent, as well as constraints on displacement induced by the path.
The exact scope of displacement as an analytically unified phenomenon varies from theory to theory. If more then one type of syntactic displacement is recognized, the question of the interaction between movement types arises. Displacement phenomena are extensively studied by syntacticians. Their enduring interest derives from the fact that the complex interactions between displacement and other aspects of syntax offer a powerful probe into the inner workings and architecture of the human syntactic faculty.
Jonathan David Bobaljik
Distributed Morphology (DM) is a framework in theoretical morphology, characterized by two core tenets: (i) that the internal hierarchical structure of words is, in the first instance, syntactic (complex words are derived syntactically), and (ii) that the syntax operates on abstract morphemes, defined in terms of morphosyntactic features, and that the spell-out (realization, exponence) of these abstract morphemes occurs after the syntax. Distributing the functions of the classical morpheme in this way allows for analysis of mismatches between the minimal units of grammatical combination and the minimal units of sound. Much work within the framework is nevertheless guided by seeking to understand restrictions on such mismatches, balancing the need for the detailed description of complex morphological data in individual languages against an attempt to explain broad patterns in terms of restrictions imposed by grammatical principles.
In the Early Modern English period (1500–1700), steps were taken toward Standard English, and this was also the time when Shakespeare wrote, but these perspectives are only part of the bigger picture. This chapter looks at Early Modern English as a variable and changing language not unlike English today. Standardization is found particularly in spelling, and new vocabulary was created as a result of the spread of English into various professional and occupational specializations. New research using digital corpora, dictionaries, and databases reveals the gradual nature of these processes. Ongoing developments were no less gradual in pronunciation, with processes such as the Great Vowel Shift, or in grammar, where many changes resulted in new means of expression and greater transparency. Word order was also subject to gradual change, becoming more fixed over time.
Toon Van Hal
The Early Modern interest taken in language was intense and versatile. In this period, language education gradually no longer centered solely on Latin. The linguistic scope widened considerably, partly as a result of scholarly curiosity, although religious and missionary zeal, commercial considerations, and political motives were also of decisive significance. Statesmen discovered the political power of standardized vernaculars in the typically Early Modern process of state formation. The widening of the linguistic horizon was, first and foremost, reflected in a steadily increasing production of grammars and dictionaries, along with pocket textbooks, conversational manuals, and spelling treatises. One strategy of coping with the stunning linguistic diversity consisted of first collecting data on as many languages as possible and then tracing elements that were common to all or to certain groups of languages. Language comparison was not limited to historical and genealogical endeavors, as scholars started also to compare a number of languages in terms of their alleged vices and qualities. Another way of dealing with the flood of linguistic data consisted of focusing on what the different languages had in common, which led to the development of general grammars, of which the 17th-century Port-Royal grammar is the most well-known. During the Enlightenment, the nature of language and its cognitive merits or vices became also a central theme in philosophical debates in which major thinkers were actively engaged.
Chris Rogers and Lyle Campbell
The reduction of the world’s linguistic diversity has accelerated over the last century and correlates to a loss of knowledge, collective and individual identity, and social value. Often a language is pushed out of use before scholars and language communities have a chance to document or preserve this linguistic heritage. Many are concerned for this loss, believing it to be one of the most serious issues facing humanity today. To address the issues concomitant with an endangered language, we must know how to define “endangerment,” how different situations of endangerment can be compared, and how each language fits into the cultural practices of individuals. The discussion about endangered languages focuses on addressing the needs, causes, and consequences of this loss.
Concern over endangered languages is not just an academic catch phrase. It involves real people and communities struggling with real social, political, and economic issues. To understand the causes and consequence of language endangerment for these individuals and communities requires a multifaceted perspective on the place of each language in the lives of their users. The loss of a language affects not only the world’s linguistic diversity but also an individual’s social identity, and a community’s sense of itself and its history.
Geoffrey K. Pullum
English is both the most studied of the world’s languages and the most widely used. It comes closer than any other language to functioning as a world communication medium and is very widely used for governmental purposes. This situation is the result of a number of historical accidents of different magnitudes. The linguistic properties of the language itself would not have motivated its choice (contra the talk of prescriptive usage writers who stress the clarity and logic that they believe English to have). Divided into multiple dialects, English has a phonological system involving remarkably complex consonant clusters and a large inventory of distinct vowel nuclei; a bad, confusing, and hard-to-learn alphabetic orthography riddled with exceptions, ambiguities, and failures of the spelling to correspond to the pronunciation; a morphology that is rather more complex than is generally appreciated, with seven or eight paradigm patterns and a couple of hundred irregular verbs; a large multilayered lexicon containing roots of several quite distinct historical sources; and a syntax that despite its very widespread SVO (Subject-Verb-Object) basic order in the clause is replete with tricky details. For example, there are crucial restrictions on government of prepositions, many verb-preposition idioms, subtle constraints on the intransitive prepositions known as “particles,” an important distinction between two (or under a better analysis, three) classes of verb that actually have different syntax, and a host of restrictions on the use of its crucial “wh-words.” It is only geopolitical and historical accidents that have given English its enormous importance and prestige in the world, not its inherent suitability for its role.
The differentiation of English into separate varieties in the regions of Britain and Ireland has a long history. This is connected with the separate but related identities of England, Wales, Scotland, and Ireland. In this chapter the main linguistic traits of the regions are described and discussed within the framework of language variation and change, an approach to linguistic differentiation that attempts to identify patterns of speaker social behavior and trajectories along which varieties develop.
The section on England is subdivided into rural and urban forms of English, the former associated with the broad regions of the North, the Midlands, East Anglia, the Southeast and South, and the West Country. For urban varieties English in the cities of London, Norwich, Milton Keynes, Bristol, Liverpool, and Newcastle upon Tyne is discussed in the light of the available data and existing scholarship. English in the Celtic regions of Britain and Ireland is examined in dedicated sections on Scotland, Wales, and Ireland. Finally, varieties of English found on the smaller islands around Britain form the focus, i.e., English on the Orkney and Shetland islands, the Isle of Man, and the Channel Islands.
The Eskimo-Aleut language family consists of two quite different branches, Aleut and Eskimo. The latter consists of Yupik and Inuit languages. It is spoken from the eastern coast of Russia to Greenland. The family is thought to have developed and diverged in Alaska between 4,000 and 6,000 years ago, although recent findings in a variety of fields suggest a more complex prehistory than previously assumed. The language family shares certain characteristics, including polysynthetic word formation, an originally ergative-absolutive case system (now substantially modified in Aleut), SOV word order, and more or less similar phonological systems across the language family, involving voiceless stop and voiced fricative consonant series often in alternation, and an originally four-vowel system frequently reduced to three. The languages in the family have undergone substantial postcolonial contact effects, especially evident in (although not restricted to) loanwords from the respective colonial languages. There is extensive language documentation for all languages, although not necessarily all dialects. Most languages and dialects are severely endangered today, with the exception of Eastern Canadian Inuit and Greenlandic (Kalaallisut). There are also theoretical studies of the languages in many linguistic fields, although the languages are unevenly covered, and there are still many more studies of the phonologies and syntaxes of the respective languages than other aspects of grammar.
Éva Buchi and Steven N. Dworkin
Etymology is the only linguistic subdiscipline that is uniquely historical in its study of the relevant linguistic data and one of the oldest fields in Romance linguistics.
The concept of etymology as practiced by Romanists has changed over the last 100 years. At the outset, Romance etymologists took as their brief the search for and identification of individual word origins. Starting in the early 20th century, various specialists began to view etymology as the preparation of the complete history of all facets of the evolution over time and space of the words or lexical families being studied. Identification of the underlying base was only the first step in the process. From this perspective, etymology constitutes an essential element of diachronic lexicology, which covers all formal, semantic, and syntactic facets of a word’s evolution, including, if appropriate, the circumstances leading to its demise and replacement.
Evaluative morphology is a field of linguistic studies that deals with the formation of diminutives, augmentatives, pejoratives, and amelioratives. Actually, evaluative constructions cross the boundaries of morphology, and are sometimes realized by formal strategies that cannot be numbered among word formation processes. Nevertheless, morphology plays a dominant role in the formation of evaluatives. The first attempt to draw an exhaustive account of this set of complex forms is found in the 1984 work Generative Morphology, by Sergio Scalise, who made the hypothesis that evaluatives represent a separate block of rules between inflection and derivation. This hypothesis is based on the fact that evaluatives show some properties that are derivational, others that are inflectional, and some specific properties that are neither derivational nor inflectional. After Scalise’s proposal, almost all scholars have tried to answer the question concerning the place of evaluative rules within the morphological component. What data reveal is that, in a cross-linguistic perspective, evaluatives display a uniform behavior from a semantic and functional point of view, but exhibit a wide range of formal properties. In other words, functional identity does not imply formal identity; consequently, we can expect that constructions performing the same function display different formal properties in different languages. So, if evaluatives are undoubtedly derivational in most Indo-European languages (even if they cannot be considered a typical example of derivation), they are certainly quite close to inflection in some Bantu languages. This means that the question about the place of evaluatives within the morphological component probably is not as crucial as scholars have thought, and that other issues, sometimes neglected in the literature, deserve the same attention. Among them, the role of pragmatics in the description of evaluatives is no doubt central. According to Dressler and Merlini Barbaresi, in their 1994 work, Morphopragmatics: Diminutives and Intensifiers in Italian, German and Other Languages, evaluative constructions are the more typical instantiation of morphopragmatics, which is “defined as the area of general pragmatic meanings of morphological rules, that is of the regular pragmatic effects produced when moving from the input to the output of a morphological rule.” Evaluatives include “a pragmatic variable which cannot be suppressed in the description of [their] meaning.” Another central issue in studies on evaluative morphology is the wide set of semantic nuances that usually accompany diminutives, augmentatives, pejoratives, and amelioratives. For example, a diminutive form can occasionally assume a value that is attenuative, singulative, partitive, appreciative, affectionate, etc. This cluster of semantic values has often increased the idea that evaluatives are irregular in nature and that they irremediably avoid any generalization. Dan Jurafsky showed, in 1996, that these different meanings are often the outcome of regular and cross-linguistically recurrent semantic processes, both in a synchronic and in a diachronic perspective.
This article revisits Grimshaw's (1990) tripartition of nominalization, which introduced an important correlation between particular types of nominalization and the readings associated with these nominal forms, Event and Referential. The article discusses criteria that may be used to distinguish between the two readings and the limitations of these criteria. It further offers a selective discussion of how different approaches to nominalization implement Event and Referential readings.
Existential and locative constructions form an interesting cluster of copular structures in Romance. They are clearly related, and yet there are theoretical reasons to keep them apart. In-depth analysis of the Romance languages lends empirical support to their differentiation. In semantic terms, existentials express propositions about existence or presence in an implicit contextual domain, whereas locatives express propositions about the location of an entity. In terms of information structure, existentials are typically all new or broad focus constructions. Locatives are normally characterized by focus on the location, although this can also be a presupposed topic.
Romance existentials are formed with a copula and a postcopular phrase (the pivot). A wide range of variation is found in copula selection, copula-pivot agreement, expletive subjects, the presence and function of an etymologically locative precopular proform, and, finally, the categorial status of the pivot, which is normally a noun phrase, but can also be an adjective (Calabrian, Sicilian). As for Romance locatives, a distinction must be drawn between, on the one hand, a construction with canonical SV order and S-V agreement and, on the other hand, another construction, with VS order and, in some languages, lack of V-S agreement. This latter structure has been named inverse locative.
Both existentials and locatives have a nonverbal predicate: the locative phrase in locatives and the postcopular noun or adjectival phrase in existentials. In locatives the predicate selects a thematic argument (i.e., an argument endowed with a thematic role), which serves as the syntactic subject, exception being made for inverse locatives in some languages. Contrastingly, in existentials, there is no thematic argument. In some languages the copula turns to the pivot for agreement, as this is the only overt noun phrase endowed with person and number features (Italian, Friulian, Romanian, etc.). In other languages this non-canonical agreement is not licensed (French, some Calabrian dialects, Brazilian Portuguese, etc.). In others still (Spanish, Sardinian, European Portuguese, Catalan, Gallo-Italian, etc.), it is only admitted with pivot classes that can be defined in terms of specificity. When the copula does not agree with the pivot, an expletive subject form may figure in precopular position. The cross-linguistic variation in copula-pivot agreement has been claimed to depend on language-specific constraints on subjecthood.
Highly specific pivots are only admitted in contextualized existentials, which express a proposition about the presence of an individual or an entity in a given and salient context. These existentials are found in all the Romance languages and would seem to defy the semantico-pragmatic constraints on the pivot that are widely known as Definiteness Effects.
María Irene Moyna
The definition of exocentricity hinges on the notion of head in morphology. Exocentricity and its opposite, endocentricity, describe the two possible relationships between compound constituents and the compound lexeme they make up. In endocentric compounds, one of the constituent lexemes is the head, that is, the lexical item with the semantico-syntactic features that are passed on to the whole compound. In exocentric compounds, the features of the whole are not attributable to the constituents and must be sought elsewhere.
Exocentric compounds can be divided into two broad classes, namely, syntactic (or formal) and semantic exocentric compounds. Syntactic exocentric compounds exhibit a mismatch between the grammatical category of their constituents and that of the whole. Semantic exocentric compounds are exocentric by virtue of their meaning alone, their structure providing no clues of their nonliteral interpretation. Historically, most descriptive and theoretical analyses of exocentricity have focused on syntactic exocentric compounds. On the basis of large but non-exhaustive databases of the world languages, it has been shown that exocentric compounds are marked. With a few exceptions, exocentric compound patterns are both less frequent cross-linguistically and less likely to be used in those languages that can have them. However, some patterns recur with remarkable regularity in the world’s languages. These include possessive compounds (known by their Sanskrit name, bahuvrīhi), which combine a description of a part to denote the whole (e.g., Eng. sabretooth). Deverbal nominal compounds are also robust in many language families, such as Romance; these compounds combine a verb and its direct object to denote an agent or instrument (e.g., Fr. portefeuilles ‘briefcase,’ lit. ‘carry+papers’). A third highly frequent exocentric compounding pattern combines two constituents of the same grammatical category to create a lexeme of a different word class (e.g., Japanese daisho ‘size,’ lit. ‘small+large’). It should be noted that the basic distinction between syntactic and semantic exocentric compounds can become blurred because any lexicalized compound, regardless of its internal structure, is potentially susceptible to metaphoric meaning shifts and to formal recategorization through conversion. Although exocentricity is a syntactico-semantic feature typically attributed to compounds, other morphological structures may occasionally exhibit similar behavior, namely, phrasal chunks or “syntactic freezes.”
Exocentric compounds create interesting challenges to rule-based accounts of morphology, including both lexicalist hypotheses and also those that subsume word formation operations to those of syntax. In both types of proposals, the features of all constructions are attributable to their head, so that accounting for the mismatch exhibited by exocentric compounds requires structural adjustments. Cognitive linguistics has also focused on exocentric compounds, and has sought to account for their meanings through a combination of metaphoric and metonymic shifts.
A fundamental difference in theoretical models of morphology and, particularly, of the syntax–morphology interface is that between endoskeletal and exoskeletal approaches. In the former, more traditional, endoskeletal approaches, open-class lexical items like cat or sing are held to be inherently endowed with a series of formal features that determine the properties of the linguistic expressions in which they appear. In the latter, more recent, exoskeletal approaches, it is rather the morphosyntactic configurations, independently produced by the combination of abstract functional elements, that determine those properties. Lexical items, in this latter approach, are part of the structure but, crucially, do not determine it.
Conceptually, although a correlation is usually made between endoskeletalism and lexicalism/projectionism, on the one hand, and between exoskeletalism and (neo)constructionism, on the other, things are actually more complicated, and some frameworks exist that seem to challenge those correlations, in particular when the difference between word and morpheme is taken into account.
Empirically, the difference between these two approaches to morphology and the morphology-syntax interface comes to light when one examines how each one treats a diversity of word-related phenomena: morphosyntactic category and category shift in derivational processes, inflectional class, nominal properties like mass or count, and verbal properties like agentivity and (a)telicity.