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Head-directionality parameter

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In linguistics, head directionality is a proposed parameter that classifies languages according to whether they are head-initial (the head of a phrase precedes its complements) or head-final (the head follows its complements). The head is the element that determines the category of a phrase: for example, in a verb phrase, the head is a verb. Therefore, head initial would be "VO" languages and head final would be "OV" languages.

Some languages are consistently head-initial or head-final at all phrasal levels. English is considered to be mainly head-initial (verbs precede their objects, for example), while Japanese is an example of a language that is consistently head-final. In certain other languages, such as German and Gbe, examples of both types of head directionality occur. Various theories have been proposed to explain such variation.

Head directionality is connected with the type of branching that predominates in a language: head-initial structures are right-branching, while head-final structures are left-branching. On the basis of these criteria, languages can be divided into head-final (rigid and non-rigid) and head-initial types. The identification of headedness is based on the following:

  1. the order of subject, object, and verb
  2. the relationship between the order of the object and verb
  3. the order of an adposition and its complement
  4. the order of relative clause and head noun.

Types of phrase

In some cases, particularly with noun and adjective phrases, it is not always clear which dependents are to be classed as complements, and which as adjuncts. Although in principle the head-directionality parameter concerns the order of heads and complements only, considerations of head-initiality and head-finality sometimes take account of the position of the head in the phrase as a whole, including adjuncts. The structure of the various types of phrase is analyzed below in relation to specific languages, with a focus on the ordering of head and complement. In some cases (such as English and Japanese) this ordering is found to be the same in practically all types of phrase, whereas in others (such as German and Gbe) the pattern is less consistent. Different theoretical explanations of these inconsistencies are discussed later in the article. There are various types of phrase in which the ordering of head and complement(s) may be considered when attempting to determine the head directionality of a language, including:

  • Verb Phrase: the head of verb phrase (VP) is a verb, and the complement(s) are most commonly objects of various types. The ordering here is related to one of the chief questions in the word order typology of languages, namely the normal order of subject, verb and object within a clause (languages are classed on this basis as SVO, SOV, VSO, etc.).
head-initial and head-final constructions
  • Noun Phrase: the head of a noun phrase (NP) is a noun; various kinds of complementizer phrases (CPs) and adpositional phrases (PPs) can be complements.
head-initial and head-final constructions
  • Adjective Phrase: the head of an adjective phrase (AP) is an adjective, which can take as a complement, for example, an adverbial phrase or adpositional phrase (PP).
head-initial and head-final constructions
  • Adpositional Phrase: the head of an adpositional phrase (PP) is an adposition. Such phrases are called prepositional phrases if they are head-initial (i.e. headed by a preposition), or postpositional phrases if they are head-final (i.e. headed by a postposition). The complement is a determiner phrase (or noun phrase, depending on analytical scheme followed).
head-initial and head-final constructions
  • Determiner Phrase: the head of a determiner phrase (DP) is a determiner. DPs were proposed under generative syntax; not all theories of syntax agree that they exist.
  • Complementizer Phrase: the head of a complementizer phrase (CP) is a complementizer, like that in English. In some cases the C head is covert (not overtly present). The complement of C is generally agreed to be a tense phrase (TP).
head-initial and head-final constructions
  • Tense Phrase: the head of a tense phrase (TP) is tense; these are phrases in which the head is an abstract category representing tense; the complement is a verb phrase.
  • Aspect Phrase: the head of an aspect phrase (AspP) is aspect; these are phrases in which the head is an abstract syntactic category representing aspect. In more traditional analysis the entire phrase (including any elements denoting tense or aspect) is considered to be simply a verb phrase.

Head-initial languages

English

English is a mainly head-initial language. In a typical verb phrase, for example, the verb precedes its complements, as in the following example:

English VP structure
eat an apple
]

The head of the phrase (the verb eat) precedes its complement (the determiner phrase an apple). Switching the order to " ]" would be ungrammatical.

Nouns also tend to precede any complements, as in the following example, where the relative clause (or complementizer phrase) that follows the noun may be considered to be a complement:

English NP structure
He married a girl who is from Texas.
]

Nouns do not necessarily begin their phrase; they may be preceded by attributive adjectives, but these are regarded as adjuncts rather than complements. Adjectives themselves may be preceded by adjuncts, namely adverbs, as in extremely happy. However, when an adjective phrase contains a true complement, such as a prepositional phrase, the head adjective precedes it:

a person happy about her work
]

English adpositional phrases are also head-initial; that is, English has prepositions rather than postpositions:

English PP structure
a majority of eligible voters
]

On the determiner phrase (DP) view, where a determiner is taken to be the head of its phrase (rather than the associated noun), English can be seen to be head-initial in this type of phrase too. In the following example the head is taken to be the determiner any, and the complement is the noun (phrase) book:

English DP structure
any book
]

English also has head-initial complementizer phrases, as in this example where the complementizer that precedes its complement, the tense phrase Mary did not swim:

We saw that Mary did not swim
]

Grammatical words marking tense and aspect generally precede the semantic verb. This indicates that, if finite verb phrases are analyzed as tense phrases or aspect phrases, these are again head-initial in English. In the example above, did is considered a (past) tense marker, and precedes its complement, the verb phrase not swim. In the following, has is a (perfect) aspect marker; again it appears before the verb (phrase) which is its complement.

English AspP Structure
John has arrived
]

The following example shows a sequence of nested phrases in which each head precedes its complement. In the complementizer phrase (CP) in (a), the complementizer (C) precedes its tense phrase (TP) complement. In the tense phrase in (b), the tense-marking element (T) precedes its verb phrase (VP) complement. (The subject of the tense phrase, the girl, is a specifier, which does not need to be considered when analyzing the ordering of head and complement.) In the verb phrase in (c), the verb (V) precedes its two complements, namely the determiner phrase (DP) the book and the prepositional phrase (PP) on the table. In (d), where a picture is analyzed as a determiner phrase, the determiner (D) a precedes its noun phrase (NP) complement, while in (e), the preposition (P) on precedes its DP complement your desk.

You know that the girl will put a picture on your desk.
a. CP: ]
b. TP: ]
c. VP: ]
d. DP: ]
e. PP: ]

Indonesian

Indonesian is an example of an SVO head-initial language. The characteristic of it being a head-initial language can be examined through a dependency perspective or through a word order perspective. Both approaches lead to the conclusion that Indonesian is a head-initial language.

Dependency perspective

Governor-Dependent relationship in SVO Head-initial languages

When examining Indonesian through a dependency perspective, it is considered head initial as the governor of both constituents are positioned before the dependent.

Placing the head before a dependent minimizes the overall dependency distance, which is the distance between the two constituents. Minimizing dependency distance allows for less cognitive demand as a head-final dependency requires the constituents in the dependent clause to be stored in working memory until the head is realized.

Dependency distance between constituents in Indonesian

In Indonesian, the number of constituencies affects the dependency direction. When there are 6 constituents — which is a relatively short sentence — there is a preference for head initial relation. However, when there are 11-30 constituents, there appears to be a balance of head-initial and head-final dependencies. Regardless, Indonesian displays an overall head-initial preference on all levels of dependency structure as it consistently attempts to position the head as early on in the sentence even though it produces a longer dependency distance rather than placing the head after its dependents. Furthermore, Indonesian has an overall preference towards head-initial when comparing head-initial and head-final relation on all levels of constituent length for both spoken and written data.

Word order perspective

The subject of the sentence followed by the verb, representing SVO order. The following examples demonstrate head-initial directionality in Indonesian (note that perdana menteri "prime minister" is unusually being head-final):

Indonesian head-initial word order in VP

Perdana

Prime

menteri

minister

sudah

already

pulang

home

Perdana menteri sudah pulang

Prime minister already home

"The Prime minister has returned home"


      ]

Classifiers and partitives can function as the head nouns of noun phrases. Below is an example of the internal structure of a noun phrase and its head-initial word order.

Botol

Bottle

ini

DET-this

retak

crack

Botol ini retak

Bottle DET-this crack

"This bottle is cracked"


     ]

Head-initial word order is seen in the internal structure of the verb phrase in the following example where the V is in the head position of the verb phrase and thus appears before its complement:

Indonesian head-initial word order in VP

Dokter

Doctor

memeriksa

checks

mata

eye

saya

PN-my

Dokter memeriksa mata saya

Doctor checks eye PN-my

"The doctor checked my eyes"


     ]]

In Indonesian a noun can be followed by another modifying noun whose primary function is to provide more specific information about the preceding head noun, such as indicating what the head noun is made of, gender, locative sense, and what the head noun does, etc. However, no other word is able to intervene between a head noun and its following modifying noun. If a word follows the modifying noun, then it provides reference to the head noun and not the modifying noun.

  • Head noun: + Modifying noun:

guru

teacher

bahasa

language

guru bahasa

teacher language

"language teacher"

  • Head noun: + Modifying noun: + Determiner

guru

teacher

sekolah

school

itu

DET-that

guru sekolah itu

teacher school DET-that

"that schoolteacher"

  • Head noun: + Modifying noun:

toko

shop

buku

book

toko buku

shop book

"Bookshop"

  • Head noun: + Modifying noun: + Determiner phrase

toko

shop

buku

book

yang

DET-a

besar

big

toko buku yang besar

shop book DET-a big

a big bookshop

  • Head noun: + Modifying noun:

sate

satay

ayam

chicken

sate ayam

satay chicken

"chicken satay"

Head-final languages

Japanese

Japanese is an example of a strongly head-final language. This can be seen in verb phrases and tense phrases: the verb (tabe in the example) comes after its complement, while the tense marker (ru) comes after the whole verb phrase which is its complement.

Japanese VP structure

リンゴを

ringo-o

apple-ACC

食べる

tabe-ru

eat-NPAST

リンゴを 食べる

ringo-o tabe-ru

apple-ACC eat-NPAST

"eat an apple"


      ] ]

Nouns also typically come after any complements, as in the following example where the PP New York-de-no may be regarded as a complement:

Japanese NP structure

ジョンの

John-no

John-GEN

昨日の

kinoo-no

yesterday-GEN

ニューヨークでの

New York-de-no

New York-in-GEN

講義

koogi

lecture

ジョンの 昨日の ニューヨークでの 講義

John-no kinoo-no {New York-de-no} koogi

John-GEN yesterday-GEN {New York-in-GEN} lecture

"John's lecture in New York yesterday"


      ]

Adjectives also follow any complements they may have. In this example the complement of quantity, ni-juu-meetoru ("twenty meters"), precedes the head adjective takai ("tall"):

この

Kono

this

ビルは

biru-wa

building-TOP

20メートル

ni-juu-meetoru

two-ten-meter

高い

takai

tall

この ビルは 20メートル 高い

Kono biru-wa ni-juu-meetoru takai

this building-TOP two-ten-meter tall

"This building is twenty meters taller."


      ]

Japanese uses postpositions rather than prepositions, so its adpositional phrases are again head-final:

Japanese PP structure

僕が

Boku-ga

I-NOM

高須村に

Takasu-mura-ni

Takasu-village-in

住んでいる

sunde-iru

live-PRES

僕が 高須村に 住んでいる

Boku-ga Takasu-mura-ni sunde-iru

I-NOM Takasu-village-in live-PRES

"I live in Takasu village."


      ]

Determiner phrases are head-final as well:

Japanese DP structure

誰

dare

person

も

mo

any

誰 も

dare mo

person any

"anyone"


      ]

A complementizer (here koto, equivalent to English "that") comes after its complement (here a tense phrase meaning "Mary did not swim"), thus Japanese complementizer phrases are head-final:

メリーが

Mary-ga

Mary-NOM

泳がなかったこと

oyog-ana-katta-koto

swim-NEG-PAST-that

メリーが 泳がなかったこと

Mary-ga oyog-ana-katta-koto

Mary-NOM swim-NEG-PAST-that

"that Mary did not swim"


      ]

Turkish

Turkish is an agglutinative, head-final, and left-branching language that uses a SOV word order. As such, Turkish complements and adjuncts typically precede their head under neutral prosody, and adpositions are postpositional. Turkish employs a case marking system which affixes to the right boundary of the word it is modifying. As such, all case markings in Turkish are suffixes. For example, the set of accusative case marking suffixes -(y)ı-, -(y)i-, -(y)u-, -(y)ü- in Turkish indicate that it is the direct object of a verb. Additionally, while some kinds of definite determiners and postpositions in Turkish can be marked by case, other types also exist as free morphemes. In the following examples, Turkish case marker suffixes are analyzed as complements to the head.

Head-final Tense Phrase

Turkish TP structure

In Turkish, tense is denoted by a case marking suffix on the verb.

Ahmet

Ahmet

anne-sin-i

mother-3SG-ACC

ziyaret

visit

et-ti

do-PAST

Ahmet anne-sin-i ziyaret et-ti

Ahmet mother-3SG-ACC visit do-PAST

'Ahmet visited his mother.'


     ]

Head-final Verb Phrase

Turkish VP structure

In neutral prosody, Turkish verb phrases are primarily head-final, as the verb comes after its complement. Variation in object-verb ordering is not strictly rigid. However, constructions where the verb precedes the object are less common.

Çocuk-lar

child-PL

çikolata

chocolate

sever

like

Çocuk-lar çikolata sever

child-PL chocolate like

'Children like chocolate.'


     ]

Head-final Determiner Phrase

Turkish DP structure

In Turkish, definite determiners may be marked with a case marker suffix on the noun, such as when the noun is the direct object of a verb. They may also exist as free morphemes that attach to a head-initial determiner phrase, such as when the determiner is a demonstrative. Like other case markers in Turkish, when the morpheme carrying the demonstrative meaning is a case marker, they attach at the end of the word. As such, the head of the phrase, in this case the determiner, follows its complement like in the example below:

Dün

Yesterday

çok

very

garip

strange

kitap-lar-ı

book-PL-ACC

oku-du-m

read-PAST-1SG

Dün çok garip kitap-lar-ı oku-du-m

Yesterday very strange book-PL-ACC read-PAST-1SG

'Yesterday I read the very strange books.'


     ]

Head-final Postpositional Phrase

Turkish PP Structure

Turkish adpositions are postpositions that can affix as a case marker at the end of a word. They can also be a separate word that attaches to the head-final postpositional phrase, as is the case in the example below:

Bu

This

kitab-ı

book-ACC

Ahmet

Ahmet

için

for

al-dı-m

buy-PAST-1SG

Bu kitab-ı Ahmet için al-dı-m

This book-ACC Ahmet for buy-PAST-1SG

'I bought this book for Ahmet.'


     ]

Word order variation in matrix clauses

Turkish employs a case marking system that allows some constituents in Turkish clauses to participate in permutations of its canonical SOV word order, thereby in some ways exhibiting a 'free' word order. Specifically, constituents of an independent clause can be moved around and constituents of phrasal categories can occur outside of the projections they are elements of. As a result, it is possible for the major case-marked constituents of a clause in Turkish to appear in all possible orders in a sentence, such that SOV, SVO, OSV, OVS, VSO, and VOS word orders are acceptable.

This free word order allows for the verbal phrase to occur in any position in an independent clause, unlike other head-final languages (such as Japanese and Korean, in which any variation in word order must occur in the preverbal domain and the verb remains at the end of the clause (see § Japonic: Japanese, above)). Because of this relatively high degree of variation in word order in Turkish, its status as a head-final language is generally considered to be less strict and not absolute like Japanese or Korean, since while embedded clauses must remain verb-final, matrix clauses can show variability in word order.

In the canonical word order of Turkish, as is typical in a head-final language, subjects come at the beginning of the sentence, then objects, with verbs coming in last:

Canonical SOV word order in Turkish

1. Subject-Object-Verb (SOV, canonical word order)

Yazar

author

makale-yi

article-ACC

bitir-di

finish-PAST

Yazar makale-yi bitir-di

author article-ACC finish-PAST

'The author finished the article.'

However, several variations on this order can occur on matrix clauses, such that the subject, object, and verb can occupy all different positions within a sentence. Because Turkish uses a case-marking system to denote how each word functions in a sentence in relation to the rest, case-marked elements can be moved around without a loss in meaning. These variations, also called permutations, can change the discourse focus of the constituents in the sentence:

2. Object-Subject-Verb (OSV)

Makale-yi

article-ACC

yazar

author

bitir-di

finish-PAST

Makale-yi yazar bitir-di

article-ACC author finish-PAST

'The author finished the article.'

In this variation, the object moves to the beginning of the sentence, the subject follows, and the verb remains in final position.

3. Object-Verb-Subject (OVS)

Makale-yi

article-ACC

bitir-di

finish-PAST

yazar

author

Makale-yi bitir-di yazar

article-ACC finish-PAST author

'The author finished the article.'

In this variation, the subject moves to end of the sentence. This is an example of how verbs in Turkish can move to other positions in the clause, even though other head-final languages, such as Japanese and Korean, typically see verbs coming only at the end of the sentence.

4. Subject-Verb-Object (SVO)

Yazar

author

bitir-di

finish-PAST

makale-yi

article-ACC

Yazar bitir-di makale-yi

author finish-PAST article-ACC

'The author finished the article.'

In this variation, the object moves to the end of the sentence and the verb phrase now directly precedes the subject, which remains at the beginning of the sentence. This word order is akin to English word order.

5. Verb-Subject-Object (VSO)

Bitir-di

finish-PAST

yazar

author

makale-yi

article-ACC

Bitir-di yazar makale-yi

finish-PAST author article-ACC

'The author finished the article.'

In this variation, the verb phrase moves from the end of the sentence to the beginning of the sentence.

6. Verb-Object-Subject (VOS)

Bitir-di

finish-PAST

makale-yi

article-ACC

yazar

author

Bitir-di makale-yi yazar

finish-PAST article-ACC author

'The author finished the article.'

In this variation, the verb phrase moves to the beginning of the sentence, the object moves so that it is directly following the verb, and the subject is at the end of the sentence.

Mixed word-order languages

German

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German, while being predominantly head-initial, is less conclusively so than in the case of English. German also features certain head-final structures. For example, in a nonfinite verb phrase the verb is final. In a finite verb phrase (or tense/aspect phrase) the verb (tense/aspect) is initial, although it may move to final position in a subordinate clause. In the following example, the non-finite verb phrase es finden is head-final, whereas in the tensed main clause ich werde es finden (headed by the auxiliary verb werde indicating future tense), the finite auxiliary precedes its complement (as an instance of a verb-second construction; in the example below, this V2-position is called "T").

German VP structure

Ich

I

werde

will

es

it

finden

find

Ich werde es finden

I will it find

"I will find it."

]]

Noun phrases containing complements are head-initial; in this example the complement, the CP der den Befehl überbrachte, follows the head noun Boten.

Man

one

beschimpfte

insulted

den

the

Boten,

messenger

der

who

den

the

Befehl

command

überbrachte

delivered

Man beschimpfte den Boten, der den Befehl überbrachte

one insulted the messenger who the command delivered

"The messenger, who delivered the command, was insulted."

]

Adjective phrases may be head-final or head-initial. In the next example the adjective (stolze) follows its complement (auf seine Kinder).

German head-final AP Structure

der

the

auf

of

seine

his

Kinder

children

stolze

proud

Vater

father

der auf seine Kinder stolze Vater

the of his children proud father

"the father (who is) proud of his children"

]

However, when essentially the same adjective phrase is used predicatively rather than attributively, it can also be head-initial:

German head-initial AP Structure

weil

since

er

he

stolz

proud

auf

of

seine

his

Kinder

children

ist

is

weil er stolz auf seine Kinder ist

since he proud of his children is

"since he is proud of his children"

]

Most adpositional phrases are head-initial (as German has mostly prepositions rather than postpositions), as in the following example, where auf comes before its complement den Tisch:

German head-initial PP structure

Peter

Peter

legt

puts

das

the

Buch

book

auf

on

den

the.ACC

Tisch

table

Peter legt das Buch auf den Tisch

Peter puts the book on the.ACC table

"Peter puts the book on the table."

]

German also has some postpositions, however (such as gegenüber "opposite"), and so adpositional phrases can also sometimes be head-final. Another example is provided by the analysis of the following sentence:

Die

the

Schnecke

snail

kroch

crept

das

the

Dach

roof

hinauf

up

Die Schnecke kroch das Dach hinauf

the snail crept the roof up

"The snail crept up the roof"

]

Like in English, determiner phrases and complementizer phrases in German are head-initial. The next example is of a determiner phrase, headed by the article der:

German CP Structure

der

the

Mann

man

der Mann

the man

"the man"

]

In the following example, the complementizer dass precedes the tense phrase which serves as its complement:

dass

that

Lisa

Lisa

eine

a

Blume

flower

gepflanzt

planted

hat

has

dass Lisa eine Blume gepflanzt hat

that Lisa a flower planted has

"that Lisa planted a flower"

]

Chinese

Standard Chinese (whose syntax is typical of Chinese varieties generally) features a mixture of head-final and head-initial structures. Noun phrases are head-final. Modifiers virtually always precede the noun they modify.

In the case of strict head/complement ordering, however, Chinese appears to be head-initial. Verbs normally precede their objects. Both prepositions and postpositions are reported, but the postpositions can be analyzed as a type of noun (the prepositions are often called coverbs).

Gbe

In Gbe, a mixture of head-initial and head-final structures is found. For example, a verb may appear after or before its complement, which means that both head-initial and head-final verb phrases occur. In the first example the verb for "use" appears after its complement:

Kɔ̀jó

Kojo

tó

IMPERF

àmí

oil

lɔ́

DET

zân

use

Kɔ̀jó tó àmí lɔ́ zân

Kojo IMPERF oil DET use

"Kojo is using the oil."

]

In the second example the verb precedes the complement:

Kɔ̀jó

Kojo

nɔ̀

HAB

zán

use-PERF

àmí

oil

lɔ́

DET

Kɔ̀jó nɔ̀ zán àmí lɔ́

Kojo HAB use-PERF oil DET

"Kojo habitually used the oil/Kojo habitually uses the oil."

]

It has been debated whether the first example is due to object movement to the left side of the verb or whether the lexical entry of the verb simply allows head-initial and head-final structures.

Tense phrases and aspect phrases are head-initial since aspect markers (such as tó and nɔ̀ above) and tense markers (such as the future marker ná in the following example, but that does not apply to tense markers shown by verb inflection) come before the verb phrase.

dàwé

man

lɔ̀

DET

ná

FUT

xɔ̀

buy

kɛ̀kɛ́

bicycle

dàwé lɔ̀ ná xɔ̀ kɛ̀kɛ́

man DET FUT buy bicycle

"The man will buy a bicycle."

]

Gbe noun phrases are typically head-final, as in this example:

Gbe NP structure

Kɔ̀kú

Koku

sín

CASE

ɖìdè

sketch

lɛ̀

PL

Kɔ̀kú sín ɖìdè lɛ̀

Koku CASE sketch PL

"sketches of Koku"

]

In the following example of an adjective phrase, Gbe follows a head-initial pattern, as the head yù precedes the intensifier tàùú.

Gbe AP structure

àǔn

dog

yù

black

tàùú

INT

àǔn yù tàùú

dog black INT

"really black dogs"

]

Gbe adpositional phrases are head-initial, with prepositions preceding their complement:

Kòfi

Kofi

zé

take-PERF

kwɛ́

money

xlán

to

Àsíbá

Asiba

Kòfi zé kwɛ́ xlán Àsíbá

Kofi take-PERF money to Asiba

"Kofi sent money to Asiba."

]

Determiner phrases, however, are head-final:

Gbe CP structure

Asíbá

Asiba

xɔ̀

buy-PERF

àvɔ̀

cloth

àmàmú

green

màtàn-màtàn

odd

ɖé

DEF

Asíbá xɔ̀ àvɔ̀ àmàmú màtàn-màtàn ɖé

Asiba buy-PERF cloth green odd DEF

"Asiba bought a specific ugly green cloth"

]

Complementizer phrases are head-initial:

ɖé

that

Dòsà

Dosa

gbá

build-PERF

xwé

house

ɔ̀

DEF

ɔ̀

DET

ɖé Dòsà gbá xwé ɔ̀ ɔ̀

that Dosa build-PERF house DEF DET

"that Dosa built the house"

]

Theoretical views

Dependency grammar

The idea that syntactic structures reduce to binary relations was introduced by Lucien Tesnière in 1959 within the framework of dependency theory, which was further developed in the 1960s. Tesnière distinguished two structures that differ in the placement of the structurally governing element (head): centripetal structures, in which heads precede their dependents, and centrifugal structures, in which heads follow their dependents. Dependents here may include complements, adjuncts, and specifiers.

Typology

Joseph Greenberg, who worked in the field of language typology, put forward an implicational theory of word order, whereby:

  • If a language has VO (verb-before-object) ordering, then it will also have prepositions (rather than postpositions), and genitives and adjectives will be placed after the noun they modify.
  • If a language has OV ordering, then it will also have postpositions, and genitives and adjectives will be placed before the noun they modify.

The first set of properties make heads come at the start of their phrases, while the second set make heads come at the end. However, it has been claimed that many languages (such as Basque) do not fulfill the above conditions, and that Greenberg's theory fails to predict the exceptions.

Fundamental Principle of Placement

Winfred P. Lehmann, expanding upon Greenberg's theory, proposed a Fundamental Principle of Placement (FPP) in 1973. The FPP states that the order of object and verb relative to each other in a language determines other features of that language's typology, beyond the features that Greenberg identified.

Features associated with head-directionality according to Lehmann (1973)
Feature OV languages VO languages
Morphological typology Agglutinative Inflectional or analytic
Position of negation and interrogative markers After verb root Before verb root
Position of sentence function markers End of sentence Beginning of sentence
Affixation Strictly suffixing Suffixing or prefixing
Relative and reflexive pronouns Absent Present
Syllable codas Open syllables preferred Closed syllables preferred
Vowel harmony directionality Left-to-right Right-to-left
Accent type Pitch accent Stress accent

Lehmann also believed that the subject is not a primary element of a sentence, and that the traditional six-order typology of languages should be reduced to just two, VO and OV, based on head-directionality alone. Thus, for example, SVO and VSO would be considered the same type in Lehmann's classification system.

Principles and parameters

Noam Chomsky's Principles and Parameters theory in the 1980s introduced the idea that a small number of innate principles are common to every human language (e.g. phrases are oriented around heads), and that these general principles are subject to parametric variation (e.g. the order of heads and other phrasal components may differ). In this theory, the dependency relation between heads, complements, specifiers, and adjuncts is regulated by X-bar theory, proposed by Jackendoff in the 1970s. The complement is sister to the head, and they can be ordered in one of two ways. A head-complement order is called a head-initial structure, while a complement-head order is called a head-final structure. These are special cases of Tesnière's centripetal and centrifugal structures, since here only complements are considered, whereas Tesnière considered all types of dependents.

In the principles and parameters theory, a head-directionality parameter is proposed as a way of classifying languages. A language which has head-initial structures is considered to be a head-initial language, and one which has head-final structures is considered to be a head-final language. It is found, however, that very few, if any, languages are entirely one direction or the other. Linguists have come up with a number of theories to explain the inconsistencies, sometimes positing a more consistent underlying order, with the phenomenon of phrasal movement being used to explain the surface deviations.

Antisymmetry

According to the Antisymmetry theory proposed by Richard S. Kayne, there is no head-directionality parameter as such: it is claimed that at an underlying level, all languages are head-initial. In fact, it is argued that all languages have the underlying order Specifier-Head-Complement. Deviations from this order are accounted for by different syntactic movements applied by languages. Kayne argues that a theory that allows both directionalities would imply an absence of asymmetries between languages, whereas in fact languages fail to be symmetrical in many respects. Kayne argues using the concept of a probe-goal search (based on the ideas of the Minimalist program), whereby a head acts as a probe and looks for a goal, namely its complement. Kayne proposes that the direction of the probe-goal search must share the direction of language parsing and production. Parsing and production proceed in a left-to-right direction: the beginning of sentence is heard or spoken first, and the end of the sentence is heard or spoken last. This implies (according to the theory) an ordering whereby probe comes before goal, i.e. head precedes complement.

Some linguists have rejected the conclusions of the Antisymmetry approach. Some have pointed out that in predominantly head-final languages such as Japanese and Basque, the change from an underlying head-initial form to a largely head-final surface form would involve complex and massive leftward movement, which is not in accordance with the ideal of grammatical simplicity. Some take a "surface true" viewpoint: that analysis of head direction must take place at the level of surface derivations, or even the Phonetic Form (PF), i.e. the order in which sentences are pronounced in natural speech. This rejects the idea of an underlying ordering which is then subject to movement, as posited in Antisymmetry and in certain other approaches. It has been argued that a head parameter must only reside at PF, as it is unmaintainable in its original form as a structural parameter.

Some linguists have provided evidence which may be taken to support Kayne's scheme, such as Lin, who considered Standard Chinese sentences with the sentence-final particle le. Certain restrictions on movement from within verb phrases preceding such a particle are found (if various other assumptions from the literature are accepted) to be consistent with the idea that the verb phrase has moved from its underlying position after its head (the particle le here being taken as the head of an aspect phrase). However, Takita (2009) observes that similar restrictions do not apply in Japanese, in spite of its surface head-final character, concluding that if Lin's assumptions are correct, then Japanese must be considered to be a true head-final language, contrary to the main tenet of Antisymmetry. More details about these arguments can be found in the Antisymmetry article.

Gradient classification

Some scholars, such as Tesnière, argue that there are no absolute head-initial or head-final languages. According to this approach, it is true that some languages have more head-initial or head-final elements than other languages do, but almost any language contains both head-initial and head-final elements. Therefore, rather than being classifiable into fixed categories, languages can be arranged on a continuum with head-initial and head-final as the extremes, based on the frequency distribution of their dependency directions. This view was supported in a study by Haitao Liu (2010), who investigated 20 languages using a dependency treebank-based method. For instance, Japanese is close to the head-final end of the continuum, while English and German, which have mixed head-initial and head-final dependencies, are plotted in relatively intermediate positions on the continuum.

Polinsky (2012) identified the following five head-directionality sub-types:

She identified a strong correlation between the head-directionality type of a language and the ratio of verbs to nouns in the lexical inventory. Languages with a scarcity of simple verbs tend to be rigidly head-final, as in the case of Japanese, whereas verb-rich languages tend to be head-initial languages.

See also

Notes

  1. ^ Contemporary Linguistic Parameters : Contemporary Studies in Linguistics. Bloomsbury Academic. 2015. doi:10.5040/9781474219549.ch-004. ISBN 978-1-4725-3393-7.
  2. Dryer 2009.
  3. Polinsky, Maria; Magyar, Lilla (March 2020). "Headedness and the Lexicon: The Case of Verb-to-Noun Ratios". Languages. 5 (1): 5. doi:10.3390/languages5010009. hdl:1903/31367.
  4. Szabolcsi 1983.
  5. Van Langendonck 1994.
  6. ^ Fukui 1993, p. 401.
  7. Smith 1964, p. 41.
  8. Sadler & Arnold 1994, pp. 28–34.
  9. Sadler & Arnold 1994, pp. 28.
  10. Gillion 1992, p. 15.
  11. ^ Takahashi 2002, p. 2.
  12. ^ Sells 1995, p. 4.
  13. Lin 2003, p. 2.
  14. Sportiche, Koopman & Stabler 2014.
  15. Graf, T; Paperno, D; Szabolcsi, A; Tellings, J (2012). Theories of Everything. In Honour of Ed Keenan (PDF). UCLA Working Papers in Linguistics. pp. 348–359.
  16. ^ Ansari, Lalitia; Suhardiianto, Totok (November 2018). "Where is the Head Positioned in Indonesian Language?: A Corpus Study of Head Directionality from a Dependency Perspective". 2018 International Conference on Asian Language Processing (IALP). Bandung, Indonesia: IEEE. pp. 171–177. doi:10.1109/IALP.2018.8629214. ISBN 978-1-7281-1175-9. S2CID 59554177.
  17. ^ Sneddon, James N (15 April 2010). Indonesian: A Comprehensive Grammar. London: Routledge. pp. 131–147. doi:10.4324/9780203720882. ISBN 9780203720882. Retrieved 10 December 2021.
  18. Fukui 1993, pp. 412–413.
  19. Watanabe 2011, pp. 9–10.
  20. Vinka 2009, p. 4.
  21. Arik, Engin (October 2019). "An Experimental Approach to Basic Word Order in Turkish Intransitives". Psychology of Language and Communication. 20 (1): 73–91. doi:10.1515/plc-2016-0004. S2CID 152036877.
  22. ^ van Schaaik, Gerjan (September 2020). The Oxford Turkish Grammar. Oxford University Press. ISBN 9780198851509.
  23. Kornfilt, Jaklin (2013). Turkish. London: Routledge. pp. 1–211. ISBN 9781315823652.
  24. ^ Göksel, Aslı; Kerslake, Celia (2011). Turkish an Essential Grammar. Routledge. p. 368. ISBN 9780415462693.
  25. ^ A. Sumru Özsoy, ed. (2019). Word Order in Turkish. Cham, Switzerland: Springer International Publishing AG. p. 313. ISBN 9783030113841.
  26. Taylan, Eser Erguvanlı (1984). The Function of Word Order in Turkish Grammar. Berkeley: University of California Press. p. 179. ISBN 0520099559.
  27. Dopke 1998, p. 6.
  28. Crysmann 2005, p. 6.
  29. Hinterhölzl 2010, p. 4.
  30. Hinterhölzl 2010, p. 5.
  31. Van Riemsdijk 2007, p. 3.
  32. Van Riemsdijk 2007, p. 1.
  33. Bianchi 1999, p. 251.
  34. Kathol 2001, p. 1.
  35. Aboh 2001, pp. 1–2.
  36. Aboh 2001, p. 2.
  37. Kinyalolo 1992, pp. 1–16.
  38. Aboh 2001, p. 34.
  39. Brousseau & Lumsden 1992, p. 4.
  40. Aboh 2004.
  41. Aboh 2001, p. 117.
  42. Aboh 2001, p. 100.
  43. Aboh 2001, p. 348.
  44. Graffi 2001, pp. 197–198.
  45. Elordieta 2014, p. 2.
  46. ^ Elordieta 2014, p. 5.
  47. Lehmann, Winfred P. (March 1973). "A Structural Principle of Language and Its Implications". Language. 49 (1). Linguistic Society of America: 47–66. doi:10.2307/412102. JSTOR 412102.
  48. Chomsky 1981.
  49. Jackendoff 1977.
  50. Kayne 2011, p. 12.
  51. Richards 2008, p. 283.
  52. Lin 2006.
  53. Takita 2009, pp. 59.
  54. Liu 2010, pp. 1567–1578.
  55. Polinsky 2012, pp. 348–359.

Bibliography

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