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Evidentiality



 
 
In linguistics
Linguistics

Linguistics is the science study of natural language. Linguistics encompasses a number of sub-fields. An important topical division is between the study of language structure and the study of Meaning ....
, evidentiality is, broadly, the indication of the nature of evidence for a given statement, that is, whether evidence
Evidence

Evidence in its broadest sense includes everything that is used to determine or demonstrate the truth of an assertion. Giving or procuring evidence is the process of using those things that are either a) presumed to be true, or b) were themselves proven via evidence, to demonstrate an assertion's truth....
 exists for the statement and/or what kind of evidence exists. An evidential (also verificational or validational) is the particular grammatical element (affix
Affix

An affix is a morpheme that is attached to a word stem to form a new word. Affixes may be derivation , like English -ness and pre-, or inflectional, like English plural -s and past tense -ed....
, clitic
Clitic

In linguistics, a clitic is a grammatically independent and phonology dependent word. It is pronounced like an affix, but works at the phrase level....
, or particle
Grammatical particle

A particle, in grammar, is a function word that is not assignable to any of the traditional grammatical word classes . The term is a catch-all term for a heterogeneous set of elements and lacks a precise universal definition....
) that indicates evidentiality. Languages with only a single evidential have had the terms mediative, médiatif, médiaphorique, and indirective used instead of evidential.

Introduction
All languages have some means of specifying the source of information.






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Encyclopedia


In linguistics
Linguistics

Linguistics is the science study of natural language. Linguistics encompasses a number of sub-fields. An important topical division is between the study of language structure and the study of Meaning ....
, evidentiality is, broadly, the indication of the nature of evidence for a given statement, that is, whether evidence
Evidence

Evidence in its broadest sense includes everything that is used to determine or demonstrate the truth of an assertion. Giving or procuring evidence is the process of using those things that are either a) presumed to be true, or b) were themselves proven via evidence, to demonstrate an assertion's truth....
 exists for the statement and/or what kind of evidence exists. An evidential (also verificational or validational) is the particular grammatical element (affix
Affix

An affix is a morpheme that is attached to a word stem to form a new word. Affixes may be derivation , like English -ness and pre-, or inflectional, like English plural -s and past tense -ed....
, clitic
Clitic

In linguistics, a clitic is a grammatically independent and phonology dependent word. It is pronounced like an affix, but works at the phrase level....
, or particle
Grammatical particle

A particle, in grammar, is a function word that is not assignable to any of the traditional grammatical word classes . The term is a catch-all term for a heterogeneous set of elements and lacks a precise universal definition....
) that indicates evidentiality. Languages with only a single evidential have had the terms mediative, médiatif, médiaphorique, and indirective used instead of evidential.

Introduction


All languages have some means of specifying the source of information. European languages (such as Germanic
Germanic languages

The Germanic languages are a group of related languages that constitute a branch of the Indo-European languages language family. The common ancestor of all the languages in this branch is Proto-Germanic, spoken in approximately the mid-1st millennium BC in Pre-Roman Iron Age....
 and Romance languages
Romance languages

The Romance languages are a branch of the Indo-European languages comprising all the languages that descend from Latin language, the language of ancient Rome....
) often indicate evidential-type information through modal verb
Modal verb

A modal verb is a type of auxiliary verb that is used to indicate linguistic modality. The use of auxiliary verbs to express modality is a characteristic of Germanic languages....
s ( , ) or other lexical words (adverbial
Adverbial

In grammar an adverbial is a word or a group of words that modifies or tells us something about the Sentence or the verb. The word adverbial is also used as an adjective, meaning 'having the same function as an adverb'....
s) or phrases (English: it seems to me).

Some languages have a distinct grammatical category
Grammatical category

A grammatical category or functional category is a linguistic term encompassing, among other things:*Animacy*Countability *Definiteness ...
 of evidentiality that is required to be expressed at all times. The elements in European languages indicating the information source are optional and usually do not indicate evidentiality as their primary function — thus they do not form a grammatical category. The obligatory elements of grammatical evidentiality systems may be translated into English, variously, as I hear that, I see that, I think that, as I hear, as I can see, as far as I understand, they say, it is said, it seems, it seems to me that, it looks like, it appears that, it turns out that, alleged, stated, allegedly, reportedly, obviously, etc.

Alexandra Aikhenvald
Alexandra Aikhenvald

Alexandra Yurievna Aikhenvald is a linguist specialising Linguistic typology and Arawakan languages , which is spoken in the Brazilian Amazon basin....
 (2004) reports that about a quarter of the world's languages have some type of grammatical evidentiality. She also reports that, to her knowledge, no research has been conducted on grammatical evidentiality in sign language
Sign language

A sign language is a language which, instead of acoustically conveyed sound patterns, uses visually transmitted sign patterns to convey meaning—simultaneously combining hand shapes, orientation and movement of the hands, arms or body, and facial expressions to express fluidly a speaker's thoughts....
s. A first preliminary study on evidentiality in sign language has been conducted by Laura Mazzoni on LIS (Italian Sign Language).

Many languages with grammatical evidentiality mark evidentiality independently from tense
Grammatical tense

Grammatical tense is a temporal language quality expressing the time at, during, or over which a state or action denoted by a verb occurs.Tense is one of at least five qualities, along with grammatical mood, grammatical voice, grammatical aspect, and grammatical person, which verb forms may express....
-aspect
Grammatical aspect

In linguistics, the grammatical aspect of a verb defines the temporal flow in the described event or state. In English, for example, the past-tense sentences "I swam" and "I was swimming" differ in aspect ....
 or epistemic modality
Epistemic modality

Epistemic modality is a sub-type of linguistic modality that deals with a speaker's evaluation/judgment of, degree of confidence in, or belief of the knowledge upon which a proposition is based....
 (which is the speaker's evaluation of the information, i.e. whether it is reliable, uncertain, probable).

Grammatical evidentiality may be expressed in different forms (depending on the language), such as through affix
Affix

An affix is a morpheme that is attached to a word stem to form a new word. Affixes may be derivation , like English -ness and pre-, or inflectional, like English plural -s and past tense -ed....
es, clitic
Clitic

In linguistics, a clitic is a grammatically independent and phonology dependent word. It is pronounced like an affix, but works at the phrase level....
s, or particle
Grammatical particle

A particle, in grammar, is a function word that is not assignable to any of the traditional grammatical word classes . The term is a catch-all term for a heterogeneous set of elements and lacks a precise universal definition....
s. For example, Eastern Pomo has 4 evidential suffixes
Affix

An affix is a morpheme that is attached to a word stem to form a new word. Affixes may be derivation , like English -ness and pre-, or inflectional, like English plural -s and past tense -ed....
 that are added to verbs, -ink’e (nonvisual sensory), -ine (inferential), -·le (hearsay), -ya (direct knowledge).

Evidentials in Eastern Pomo
Evidential type Example Verb Gloss
nonvisual sensory "burned"
[speaker felt the sensation]
inferential "must have burned"
[speaker saw circumstantial evidence]
hearsay (reportative) "burned, they say"
[speaker is reporting what was told]
direct knowledge "burned"
[speaker has direct evidence, probably visual]
(McLendon 2003)


The use of evidentiality has pragmatic
Pragmatics

Pragmatics or intent is the study of how the arrangement of words and phrases can alter the meaning of a sentence, it deals with the structural ambiguity in a sentence....
 implications in languages that do not mark evidentiality distinctly from epistemic modality. For example, a person who makes a false statement qualified as a belief may be considered mistaken; a person who makes a false statement qualified as a personally observed fact will probably be considered to have lied.

Types of grammatical evidentiality


Following the typology
Linguistic typology

Linguistic typology is a subfield of linguistics that studies and classifies languages according to their structural features. Its aim is to describe and explain the structural diversity of the world's languages....
 of Aikhenvald (2004, 2006), there are two broad types of evidential marking:

  1. indirectivity marking ("type I")
  2. evidential marking ("type II")


The first type (indirectivity) indicates whether evidence exists for a given statement, but does not specify what kind of evidence. The second type (evidentiality proper) specifies the kind of evidence (such as whether the evidence is visual, reported, or inferred).

Indirectivity (type I)


Indirectivity (also known as inferentiality) systems are common in Iranian
Iranian languages

The Iranian languages are a branch of the Indo-European languages and its subfamily, Indo-Iranian languages. These languages are mainly spoken by the Iranian Peoples....
, Finno-Ugric
Finno-Ugric languages

Finno-Ugric is a group of languages in the Uralic languages family, comprising Finnish language, Estonian language, Hungarian language and related languages....
, and Turkic languages
Turkic languages

The Turkic languages constitute a language family of some thirty languages, spoken by Turkic peoples across a vast area from Eastern Europe and the Mediterranean Sea to Siberia and Western China, and are sometimes considered to be part of the proposed Altaic languages....
. These languages indicate whether evidence exists for a given source of information — thus, they contrast direct information (reported directly) and indirect information (reported indirectly, focusing on its reception by the speaker/recipient). Unlike the other evidential "type II" systems, indirectivity marking does not indicate information about the source of knowledge: it is irrelevant whether the information results from hearsay, inference, or perception (however, some Turkic languages distinguish between reported indirect and non-reported indirect, see Johanson 2003, 2000 for further elaboration). This can be seen in the following Turkish
Turkish language

Turkish is a language spoken by over 63 million people worldwide, making it the most commonly spoken of the Turkic languages. Its speakers are located predominantly in Turkey and Cyprus, with smaller groups in Iraq, Greece, Bulgaria, the Republic of Macedonia, Kosovo, Albania and other parts of Eastern Europe....
 verbs:

gel-di "came"         gel-mis "obviously came, came (as far as understood)"
come-PAST          come-INDIRPAST 
(Johanson 2003: 275)


In the first word geldi, the unmarked
Markedness

Markedness is a Linguistics concept that developed out of the Prague School. A marked form is a non-basic or less natural form. An unmarked form is a basic, default form....
 suffix -di indicates past tense
Past tense

The past tense is a verb grammatical tense expressing action, activity, state or being in the past of the current moment , or prior to some other event, whether that is past, present, or future ....
. In the second word gelmis, the suffix -mis also indicates past tense but indirectly. It may be translated into English with the added words obviously or as far as I understand. The direct past tense marker -di is unmarked (or neutral) in the sense that whether or not evidence exists supporting the statement is not specified.

Evidentiality (type II)


The other broad type of evidentiality systems ("type II") specifies the nature of the evidence supporting a statement. These kinds of evidence can be divided into such criteria as:

  • Witness vs. Nonwitness
  • Firsthand vs. Secondhand vs. Thirdhand
  • Sensory
    • Visual vs. Nonvisual (i.e. auditory, olfactory, etc.)
  • Inferential
  • Reportative
    • Hearsay
    • Quotative
  • Assumed


A witness evidential indicates that the information source was obtained through direct observation by the speaker. Usually this is from visual observation (eyewitness), but some languages also mark information directly heard with information directly seen. A witness evidential is usually contrasted with a nonwitness evidential which indicates that the information was not witnessed personally but was obtained through a secondhand source or was inferred by the speaker.

A secondhand evidential is used to mark any information that was not personally observed or experienced by the speaker. This may include inferences or reported information. This type of evidential may be contrasted with an evidential that indicates any other kind of source. A few languages distinguish between secondhand and thirdhand information sources.

Sensory evidentials can often be divided into different types. Some languages mark visual evidence differently from nonvisual evidence that is heard, smelled, or felt. The Kashaya language
Kashaya language

Kashaya is a severely endangered language Pomoan language spoken on the Northern California coast in Sonoma County, California by one of the several Pomo peoples....
 has a separate auditory evidential.

An inferential evidential indicates information was not personally experienced but was inferred from indirect evidence. Some languages have different types of inferential evidentials. Some of the inferentials found indicate:

  1. information inferred by direct physical evidence,
  2. information inferred by general knowledge,
  3. information inferred/assumed because of speaker's experience with similar situations,
  4. past deferred realization.


In many cases, different inferential evidentials also indicate epistemic modality, such as uncertainty or probability (see evidentiality & epistemic modality below). For example, one evidential may indicate that the information is inferred but of uncertain validity, while another indicates that the information is inferred but unlikely to be true.

Reportative evidentials indicate that the information was reported to the speaker by another person. A few languages distinguish between hearsay evidentials and quotative evidentials. Hearsay indicates reported information that may or may not be accurate. A quotative indicates the information is accurate and not open to interpretation (i.e., is a direct quotation). An example of a reportative from Shipibo (-ronki):

Aronkiai.
a-ronki-ai
do-REPRT-INCOMPL
"It is said that she will do it." / "She says that she will do it."
(Valenzuela 2003:39)


Typology of evidentiality systems

The following is a brief survey of evidential systems found in the languages of the world as identified in Aikhenvald (2004). Some languages only have two evidential markers while others may have six or more. The system types are organized by the number of evidentials found in the language. For example, a 2-term system (A) will have two different evidential markers; a 3-term system (B) will have three different evidentials. The systems are further divided by the type of evidentiality that is indicated (e.g., A1, A2, A3, etc). Languages that exemplify each type are listed in parentheses.

The most common system found is the A3 type.

2-term systems:

  • A1. witness, nonwitness (e.g., Jarawara, Yukaghir languages
    Yukaghir languages

    The 'Yukaghir languages' are a small family of two closely related languages spoken in the Russian Far East by the Yukaghir, an indigenous people in Eastern Siberia, living in the basin of the Kolyma River....
    , M?ky, Godoberi, Kalasha-mun
    Kalasha-mun language

    Kalash or Kalasha is an Indo-European languages in the Indo-Iranian languages branch, further classified as a Dardic languages language in the Chitral Group....
    , Khowar, Yanam
    Yanam language

    Yanam is a Yanomaman language spoken by approximately 560 speakers in Roraima, Brazil and southern Venezuela near the Mucajai, upper Uraric?a, and Paragua rivers....
    )
  • A2. nonfirsthand, everything else (e.g., Abkhaz
    Abkhaz language

    Abkhaz is a Northwest Caucasian languages spoken mainly by the Abkhaz people in Georgia , Turkey, and in Abkhazia, the republic that is generally accepted as part of Georgia, but that is recognized as independent by Russia and Nicaragua....
    , Mansi
    Mansi language

    The Mansi language is a language of the Mansi. It is spoken in territories of Russia along the Ob River and its tributary, including the Khanty-Mansi Autonomous Okrug and the Sverdlovsk Oblast....
    , Khanty
    Khanty language

    Khanty or Xanty language, also known as the Ostyak language, is a language of the Khant peoples. It is spoken in Khanty-Mansi Autonomous Okrug and Yamalo-Nenets Autonomous Okrug okrugs, as well as in Aleksandrovsky District, Tomsk Oblast and Kargosoksky District, Tomsk Oblast districts of Tomsk Oblast in Russia....
    , Netes, Enets
    Enets language

    Enets is a Samoyedic languages language spoken by the Enets along the lower Yenisei River in Krasnoyarsk Krai, Russia. There are two distinct dialects - Forest Enets and Tundra Enets - which may be considered separate languages....
    , Selkup
    Selkup language

    Selkup language is a language of the Selkups. It is spoken by some 1,570 people in the region between the Ob and Yenisei Rivers . The language name Selkup comes from the Russian language "" ...
    , Northeast Caucasian languages
    Northeast Caucasian languages

    The Northeast Caucasian languages, also called East Caucasian, Caspian, Nakho-Dagestanian, or Dagestanian, are a family of languages spoken in the Russian republics of Dagestan, Chechnya, and Ingushetia, in northern Azerbaijan, and in Georgia , as well as in diaspora populations....
    )
  • A3. reported, everything else (e.g., Enga
    Enga language

    Enga is a language of the East New Guinea Highlands that is spoken by approximately 180,000 people in Enga Province, Papua New Guinea. It has the largest body of speakers of any native language in New Guinea....
    , Tauya, Lezgian, Kham
    Kham language

    Kham is a language complex of Bodic languages Tibeto-Burma lects spoken in the remoter highlands of Rapti Zone and Dhaulagiri, western Nepal by the four northern clans of the Magar tribe, called collectively Kham Magars or Northern Magars....
    , Estonian
    Estonian language

    Estonian is the official language of Estonia, spoken by about 1.1 million people in Estonia and tens of thousands in various ?migr? communities....
    , Livonian
    Livonian language

    Livonian belongs to the Baltic-Finnic languages branch of the Uralic languages. It is a moribund language now spoken by some 35 people, of whom only 10 are fluent....
    , Tibeto-Burman languages
    Tibeto-Burman languages

    The Tibeto-Burman family of languages is spoken in various Central Asia, East Asia, South Asia and southeast Asian countries, including Burma , Tibet, northern Thailand, Vietnam, Laos, parts of central China , northern parts of Nepal, eastern parts of Bangladesh , Bhutan, northern parts of Pakistan , and various regions of India ....
    , several South American languages
    Indigenous languages of the Americas

    Indigenous languages of the Americas are spoken by Indigenous peoples of the Americas from the southern tip of South America to Alaska and Greenland, encompassing the land masses which constitute the Americas....
    )


3-term systems:

  • B1. visual sensory, inferential, reportative (e.g., Aymara
    Aymara language

    Aymara is an Aymaran languages language spoken by the Aymara ethnic group of the Andes. It is one of only a handful of Indigenous languages of the Americas with over a million speakers....
    , Shastan languages
    Shastan languages

    The Shastan family consisted of four languages, spoken in present-day northern California and southern Oregon....
    , Qiang languages, Maidu
    Maidu language

    Maidu is a severely endangered language Maiduan language spoken by Maidu peoples traditionally in the mountains east and south of Lassen Peak in the American River and Feather River river drainages....
    , Quechuan languages
    Quechuan languages

    The Quechuan languages are a language family of related languages in South America. Though it is traditionally referred to as a Quechua many linguists treat it as a family of languages....
    , Northern Embera languages
    Emberá languages

    Ember? is a group of vernaculars belonging to the Choco languages language family in northwestern Colombia and southeastern Panama....
    )
  • B2. visual sensory, nonvisual sensory, inferential (e.g., Washo
    Washo language

    The Washo language is an endangered language Native Americans in the United States language isolate spoken by the Washo people on the California?Nevada border in the drainages of the Truckee River and Carson River Rivers, especially around Lake Tahoe....
    )
  • B3. nonvisual sensory, inferential, reportative (e.g., Retuarã, Northern Pomo
    Northern Pomo

    Northern Pomo is an extinct language Pomoan language formerly spoken around Clear Lake in Lake County, California by the Habematolel Pomo of Upper Lake, one of the several Pomo peoples....
    )


4-term systems:

  • C1. visual sensory, nonvisual sensory, inferential, reportative (e.g., Tariana, Xamatauteri, Eastern Pomo, East Tucanoan languages
    Tucanoan languages

    Tucanoan is a language family of Colombia, Brazil, Ecuador, and Peru....
    )
  • C2. visual sensory, inferential #1, inferential #2, reportative (e.g., Tsafiki, Pawnee
    Pawnee language

    The Pawnee language is a Caddoan languages spoken by Pawnee Native Americans located in North central Oklahoma. Once the language of thousands of Pawnees, today Pawnee is spoken by a shrinking number of elderly speakers, and as more young people continue to learn English language as their first language, the status of Pawnee declines towards...
    )
  • C3. nonvisual sensory, inferential #1, inferential #2, reportative (e.g., Wintu
    Wintu language

    Wintu is an endangered language Wintuan languages language spoken by the Wintu people of Northern California.Wintu is the northernmost member of the Wintun family of languages....
    )
  • C4. visual sensory, inferential, reportative #1, reportative #2 (e.g., Southeastern Tepehuan)


5+ term systems:

  • visual sensory, nonvisual sensory, inferential, reportative, assumed (e.g., Tuyuca, Tucano
    Tucano

    Tucano may refer to:* The Tucano language of Brazil and Colombia, part of the Tucanoan family of languages* Embraer EMB 312 Tucano, a Brazilian turboprop training aircraft...
    )
  • witness, inferential, reportative, assumed, "internal support" (e.g., Nambiquara languages)
  • visual sensory, nonvisual sensory, inferential, reported, heard from known source, direct participation (e.g., Fasu)
  • nonvisual sensory, inferential #1, inferential #2, inferential #3, reportative (e.g., Western Apache
    Western Apache

    Western Apache refers to the similar Apache peoples living primarily in east central Arizona. Goodwin claims that the Western Apache can be divided into five groups based on dialect:...
    )


Evidential-marking & other categories


Evidential systems in many languages are often marked simultaneously with other linguistic categories. For example, a given language may use the same element to mark both evidentiality and mirativity (i.e. unexpected information). This is the case of Western Apache
Western Apache

Western Apache refers to the similar Apache peoples living primarily in east central Arizona. Goodwin claims that the Western Apache can be divided into five groups based on dialect:...
 where the post-verbal particle primarily functions as a mirative but also has a secondary function as an inferential evidential. This phenomenon of evidentials developing secondary functions or of other grammatical elements (e.g. miratives, modal verb
Modal verb

A modal verb is a type of auxiliary verb that is used to indicate linguistic modality. The use of auxiliary verbs to express modality is a characteristic of Germanic languages....
s) developing evidential functions is fairly widespread. The following types of mixed systems have been reported:

  • evidentiality with mirativity
  • evidentiality with tense
    Grammatical tense

    Grammatical tense is a temporal language quality expressing the time at, during, or over which a state or action denoted by a verb occurs.Tense is one of at least five qualities, along with grammatical mood, grammatical voice, grammatical aspect, and grammatical person, which verb forms may express....
    -aspect
    Grammatical aspect

    In linguistics, the grammatical aspect of a verb defines the temporal flow in the described event or state. In English, for example, the past-tense sentences "I swam" and "I was swimming" differ in aspect ....
  • evidentiality with modality
    Linguistic modality

    In linguistics, modals are expressions broadly associated with notions of possibility and necessity. Modals have a wide variety of interpretations which depend not only upon the particular modal used, but also upon where the modal occurs in a sentence, the meaning of the sentence independent of the modal, the conversational context, and a variety o...
       (this is discussed in the next section below)


In addition to the interactions with tense, modality, and mirativity, the usage of evidentials in some languages may also depend on the clause
Clause

In grammar, a clause is a pair of words or group of words that consists of a subject and a predicate , although in some languages and some types of clauses, the subject may not appear explicitly as a noun phrase....
 type, discourse
Discourse

Discourse means either "written or spoken communication or debate" or "a formal discussion or debate." The term is often used in semantics and discourse analysis....
 structure, and/or linguistic genre
Genre

A genre is a loose set of criteria for a category of composition; the term is often used to categorize literature and speech, but is also used for any other Art#Art forms or utterance....
.

However, despite the intersection of evidentiality systems with other semantic or pragmatic systems (through grammatical categories), several languages do mark evidentiality without any grammatical connection to these other semantic/pragmatic systems. More explicitly stated, there are modal systems which do not express evidentiality and evidential systems which do not express modality. Likewise, there are mirative systems which do not express evidentiality and evidential systems which do not express mirativity. Because some languages mark these separately, some linguists (e.g. Aikhenvald, de Haan, DeLancey) argue that evidentiality should be considered a distinct grammatical category, although they also admit the close connection of evidentiality to these other areas of language.

Evidentiality & epistemic modality


Evidentiality is often considered to be a sub-type of epistemic
Epistemology

Epistemology or theory of knowledge is the branch of philosophy concerned with the nature and scope of knowledge. It addresses the questions:...
 modality (see, for example, Palmer 1986, Kiefer 1994). Other linguists consider evidentiality (marking the source of information in a statement) to be distinct from epistemic modality (marking the degree of confidence in a statement). An English example:

I see that he is coming. (evidential)
I guess that he is coming. (epistemic)


For instance, de Haan (1999, 2001, 2005) states that evidentiality asserts evidence while epistemic modality evaluates evidence and that evidentiality is more akin to a deictic category marking the relationship between speakers and events/actions (like the way demonstrative
Demonstrative

Demonstratives are deictic expression words that indicate which entities a speaker refers to, and distinguishes those entities from others. Demonstratives are employed for spatial deixis and as discourse deictics, referring to propositions mentioned in speech....
s mark the relationship between speakers and objects, see also Joseph 2003). Aikhenvald (2003) finds that evidentials may indicate a speaker's attitude about the validity of a statement but this is not a required feature of evidentials. Additionally, she finds that evidential-marking may co-occur with epistemic-marking, but it may also co-occur with aspectual/tense or mirative marking.

Considering evidentiality as a type of epistemic modality may only be the result of analyzing non-European languages in terms of the systems of modality found in European languages. For example, the modal verbs in Germanic languages are used to indicate both evidentiality and epistemic modality (and are thus ambiguous when taken out of context). Other (non-European) languages clearly mark these differently. De Haan (2001) finds that the use of modal verbs to indicate evidentiality is comparatively rare (based on a sample of 200 languages).

Terminology


Although some linguists have proposed that evidentiality should be considered separately from epistemic modality, other linguists conflate the two. Because of this conflation, some researchers use the term evidentiality to refer both to the marking of the knowledge source and the commitment to the truth of the knowledge.

Evidentiality in English (non-grammatical)


Evidentiality is not considered a grammatical category in English because it is expressed in diverse ways and is always optional. In contrast, many other languages (including Quechua
Quechua

Quechua is a Native American language of South America. It was already widely spoken across the Central Andes long before the time of the Inca Empire, who established it as the official language of administration for their Empire, and is still spoken today in various regional forms by some 10 million people through much of South America, in...
, Yukaghir
Yukaghir languages

The 'Yukaghir languages' are a small family of two closely related languages spoken in the Russian Far East by the Yukaghir, an indigenous people in Eastern Siberia, living in the basin of the Kolyma River....
) require the speaker to mark the main verb or the sentence as a whole for evidentiality, or offer an optional set of affixes for indirect evidentiality, with direct experience being the default assumed mode of evidentiality.

Consider these English
English language

English is a West Germanic language that originated in Anglo-Saxon England and has lingua franca status in many parts of the world as a result of the military, economic, scientific, political and cultural influence of the British Empire in the 18th, 19th and early 20th centuries and that of the United States from the mid 20th century onwa...
 sentences:

I am hungry.
Bob is hungry.


We are unlikely to say the second unless someone (perhaps Bob himself) has told us that Bob is hungry. (We might still say it for someone incapable of speaking for himself, such as a baby or a pet.) If we are simply assuming that Bob is hungry based on the way he looks or acts, we are more likely to say something like:

Bob looks hungry.
Bob seems hungry.


Here, the fact that we are relying on sensory evidence, rather than direct experience, is conveyed by our use of the word look or seem.

Western History of the concept


The notion of evidentiality as obligatory grammatical information was first made apparent in 1911 by Franz Boas
Franz Boas

Franz Boas was a Germans-United States anthropologist and a pioneer of modern anthropology who has been called the "Father of American Anthropology"....
 in his introduction to The Handbook of American Indian Languages in a discussion of Kwakiutl
Kwak'wala

Kwak'wala is the Indigenous peoples of the Pacific Northwest Coast language spoken by the Kwakwaka'wakw. It belongs to the Wakashan language family....
 and in his grammatical sketch of Tsimshianic. The term evidential was first used in the current linguistic sense by Roman Jakobson
Roman Jakobson

Roman Osipovich Jakobson, , was a Russian linguist and literary critic, associated with the Russian Formalism school. He became one of the most influential linguistics of the 20th century by pioneering the development of structuralism of language, poetry, and art....
 in 1957 in reference to Balkan
Balkan languages

This is a list of languages spoken in the Balkans. With the exception of several Turkic languages, Hungarian, and Circassian, all of them belong to the Indo-European family....
 Slavic
Slavic languages

File:Slavic europe.svgThe Slavic languages , a group of closely related languages of the Slavic peoples and a subgroup of Indo-European languages, have speakers in most of Eastern Europe, in much of the Balkans, in parts of Central Europe, and in the northern part of Asia....
 (Jacobsen 1986:4; Jakobson 1990) with the following definition:

"EnEns/Es evidential is a tentative label for the verbal category which takes into account three events — a narrated event (En), a speech event (Es), and a narrated speech event (Ens). The speaker reports an event on the basis of someone else's report (quotative, i.e. hearsay evidence), of a dream (revelative evidence), of a guess (presumptive evidence) or of his own previous experience (memory evidence)."


Jakobson also was the first to clearly separate evidentiality from grammatical mood
Grammatical mood

Grammatical mood is one of a set of distinctive verb forms that are used to signal Linguistic modality.It is distinct from grammatical tense or grammatical aspect, although these concepts are conflated to some degree in many languages, including English and most other modern Indo-European languages, insofar as the same word patterns are used...
. By the middle of the 1960s, evidential and evidentiality were established terms in linguistic literature.

Systems of evidentiality have received focused linguistic attention only relatively recently. The first major work to examine evidentiality cross-linguistically is Chafe & Nichols (1986). A more recent typological
Linguistic typology

Linguistic typology is a subfield of linguistics that studies and classifies languages according to their structural features. Its aim is to describe and explain the structural diversity of the world's languages....
 comparison is Aikhenvald (2004).

See also

  • Epistemic modality
    Epistemic modality

    Epistemic modality is a sub-type of linguistic modality that deals with a speaker's evaluation/judgment of, degree of confidence in, or belief of the knowledge upon which a proposition is based....
  • Linguistic modality
    Linguistic modality

    In linguistics, modals are expressions broadly associated with notions of possibility and necessity. Modals have a wide variety of interpretations which depend not only upon the particular modal used, but also upon where the modal occurs in a sentence, the meaning of the sentence independent of the modal, the conversational context, and a variety o...
  • Epistemic mood
    Epistemic mood

    Epistemic moods are a class of grammatical moods that indicate the epistemic probability of an uterrance being true....
  • Grammatical mood
    Grammatical mood

    Grammatical mood is one of a set of distinctive verb forms that are used to signal Linguistic modality.It is distinct from grammatical tense or grammatical aspect, although these concepts are conflated to some degree in many languages, including English and most other modern Indo-European languages, insofar as the same word patterns are used...
  • Epistemology
    Epistemology

    Epistemology or theory of knowledge is the branch of philosophy concerned with the nature and scope of knowledge. It addresses the questions:...
  • Mirative
    Mirative

    A mirative is a particular grammatical element in some languages that indicates unexpected and new information. The grammatical category involving miratives is known as mirativity....


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