Lexical

Lexical causatives are common in the world's languages. There are three kinds of lexical causatives, the unifying factor being that the idea of causation is part of the semantics of the verb itself.^[1]: 177 (English, for example, employs all three of these kinds of lexical causatives.)

On the surface, lexical causatives look essentially the same as a regular transitive verb. There are a few reasons why this is not true. The first is that transitive verbs generally do not have an intransitive counterpart but lexical causatives do. The semantics of the verbs show the difference as well. A regular transitive verb implies a single event while a lexical causative implies a realization of an event:^[8]: 511

(a) John kicked the ice but nothing happened to it.

(b) *John melted the ice but nothing happened to it.

Sentence (b) is judged ungrammatical because it goes against the successful event implied by the verb melt.

Morphological

There are eight different morphological processes by which a causative may be marked, roughly organized by compactness:^[2]: 34

Within morphological causatives, this degree of compactness bears an important variable when considering the semantics of the two processes. For example, mechanisms that do not change the length of the word (internal change, tone change) are shorter than those that lengthen it. Of those that lengthen it, shorter changes are more compact than longer.

Verbs can be classified into four categories, according to how susceptible they are to morphological causativization:^{[7]: 4–11}

1. Inactive intransitives (faint)
2. Middle/ingestive verbs (either intransitive or transitive such as sit down, ascend, put clothes on, eat, or learn)
3. Active intransitives (work)
4. Transitive verbs (carry)

This hierarchy has some exceptions, but it does generally hold true. For example, given a text of Guarani, only about 16% of causatives apply to transitives.^[7]: 5 For some languages, it may not apply to transitive verbs productively and may only apply to verbs that denote abstract action or consumption of food. Additionally, within Athabaskan family, all languages can causativize inactive intransitives, but not all of them can causativize active intransitives or even transitives.^[7]: 5

Two verbs in one predicate

A number of languages involve a form of analytic causative that involves two verbs in a single predicate, such as French, Spanish, Italian and Catalan.^[2]: 35 For example, when French faire is used as a causative, the causee noun phrase cannot occur between it and the next verb.^[10]

Unlike most other Romance languages, Portuguese uses a periphrastic construction like that of English, discussed below.

Kiowa uses a similar mechanism. Verbs can be compounded with the transitive verb ɔ́m to create a causative:^[11]

Periphrastic constructions

Some languages use a periphrastic (or analytic) construction to express causation and typically include two verbs and two clauses. English causatives prototypically use make (but other verbs such as cause, order, allow, force, compel can be used) in the main clause with the lexical verb in a subordinate clause, as in "I made him go."^{[2]: 35–7}

Other languages, such as Persian,^[12] have the opposite syntax: the causative is in a subordinating clause and the main verb is in the main clause, as in the following example from Macushi:

Canela-Krahô has a combination of the two in which the causee is marked twice, once in each clause:

Portuguese also has a periphrastic construction like that of English but unlike most other Romance languages:

Analytic causatives are sometimes not considered to be valency increasing devices, but they can semantically be interpreted as such^[1].^: 181

Animacy of the object

There is a strong correlation between the semantics of a causative and the mechanism by which it is expressed. Generally, if a causative is more "compact" than another, it usually implies a more direct causation.

For inanimate and unconscious objects, English analytic causatives (1–3) are therefore not completely synonymous with lexical causatives (4–6):

1. "I made the tree fall."
2. "I made the chicken die."
3. "I made the cup rise to my lips."
4. "I felled the tree."
5. "I killed the chicken."
6. "I raised the cup to my lips."

Analytic causatives (1–3) imply that no physical contact was involved and therefore was done by some sort of magical power or telekinesis. Lexical causatives (4–6) do not imply that meaning.^[17]: 784

For animate and conscious objects, there is a different difference in meaning:

1. "He caused them to lie down."
2. "He laid them down."

(1) makes sense only if they are animate and awake. Barring magic, (2) makes sense only if the object is inanimate or unconscious.^[17]: 784

Finite and non-finite verbs

Generally, the larger the distance between the causer and the causee, the more finite the verb is. Consider the following examples from Spanish:

The first example implies that Montezuma was physically there and was directly involved in making Cortés eat bread. The second example implies that Montezuma was not physically there and arranged for something to happen to make Cortés eat bread, perhaps by killing all of his cattle. That could approximate the English construction "Montezuma got Cortés to eat bread." Therefore, at least in Spanish, a conjugated verb implies a less direct causation.^[1]: 185

Dixon's prototypes

Dixon examines this correlation cross-linguistically, and summarizes his findings in the following table.^[2]: 76 In this table, L refers to lexical causatives, M₁ refers to more compact morphological processes while M₂ refers to less compact processes, CP refers to complex predicates (two verbs, one predicate), and P refers to periphrastic constructions. These processes are explained more clearly in the devices section above.

Parameter 9, Involvement, cannot be included in the table because the only two languages with this distinction, Nomatsiguenga and Kamayurá, the morphemes are about the same length.^[2]: 75 When a larger sample of languages show this distinction, perhaps this parameter can be included in the table.

The table shows that for each of eight semantic parameters outlined in the semantics section above, more compact causative processes show one distinction while less compact processes show the other distinction. For example, Parameter 6 distinguishes between more direct and less direct causation. In Hindi, M₁, or the shorter morphological process, shows direct causation while M₂, the longer morphological process, shows indirect causation.

Summarizing the table, Dixon has given two prototypes for causatives:^[2]: 77

Prototype 1

• Causer achieves the result natural, intentionally, and directly
• Causee either lacking control or being willing and may be partially affected
• Less transitive verbs affected

Prototype 2

• Causer achieves the result accidentally, with effort, or acts indirectly
• Causee is in control but unwilling and is completely affected.
• More likely to apply to all types of verbs

All eight of the components in each prototype are never attested in a single causative. However, a single process may have two or three components. Dixon admits to these being very tentative and in need for further investigation.^{[2]: 77–8}

Intransitives

Since intransitive verbs have low valency, virtually any type of causative construction can apply to them productively within a language. Some constructions are only allowed with intransitive verbs and some languages (such as Arabic, Blackfoot, and Gothic) only allow causatives of intransitive verbs, with some exceptions.^[7]: 5 In all cases, the original subject of the underlying intransitive verb corresponds with the object of the derived transitive verb. All languages have this construction, though some allow a semantic difference if the original subject is marked differently (such as Japanese and Hungarian).^[2]: 45

For split systems, causatives of intransitives may be treated differently.^[2]: 45

The syntax of a causative construction is almost always the same as some other type of sentence, such as a sentence with a transitive verb. Tariana, however, is an exception to this rule.^[2]: 45

Transitives

In the causative of a transitive verb, the new causer always becomes the new A of the sentence. What happens to the causee and the original object depend on the language. Dixon shows that there are five main types of situations:

Causative of a transitive^{[2]: 48–56}

type	causer	original A (causee)	original O	languages
(i)	A	special marking	O	Nivkh, Telugu
(ii)	A	retains A-marking	O	Kabardian, Trumai, Qiang
(iii)	A	has O-marking	has O-marking	Hebrew, Tariana, Amharic, Sanskrit[1]: 180
(iv)	A	O	non-core	Javanese, Swahili, Kammu, Babungo
(v)	A	non-core	O	many languages

Within type (v) there are two main subtypes. Either the original A goes into the first empty slot in a hierarchy or it always takes a certain function.^[2]: 54

For the first subtype, there is a hierarchy involved in the language:

subject > direct object > indirect object > oblique > genitive > object of comparison.^[18]

French is a language that follows this hierarchy. When a causative is employed, the original A does not get marked the same for intransitives, transitives, and ditransitives.^[2]: 54 In this first example, the verb in intransitive, and with the subject slot taken, the original A becomes a direct object:

The following example has a transitive verb. The subject and direct object slots are filled (with je and les gâteaux, respectively) so the original A becomes an indirect object:

This final French example has a ditransitive verb. The subject is je, the direct object is une lettre, and the indirect object is directeur, so the original A is marked as an oblique:

While some writers have called this hierarchical causative construction the norm,^[18]: 8 outside of Romance languages it is in fact rather rare.^[2]: 54

Most other languages are of the second subtype of type (v), and the original A takes on a set case or marking, regardless whether the underlying verb is intransitive or transitive:

Further divisions of type (v)^[2]: 55

causer	original A (causee)	original O	languages
A	dative	O	Sanuma, Apalai, Kamaiurá, Turkish, Japanese
A	instrumental	O	Hungarian, Kannada, Marathi
A	locative	O	Some languages of Daghestan
A	allative	O	West Greenlandic Eskimo
A	adessive	O	The morphological causative in Finnish.
A	possessive	O	Tsez

Ditransitives

The syntactic and morphological constraints of individual language generally restrict causatives of ditransitive verbs. The underlying phrase already contains an A, O, and indirect object, and so in order to accommodate a fourth argument, languages employ a variety of constructions. They tend to be idiosyncratic and are difficult to group together into types. Additionally, data is patchy for many languages since descriptions of languages seldom include information of causatives of ditransitives.^{[2]: 56–9}

Double causatives

Some types of causative constructions essentially do not permit double causatives, e.g. it would be difficult to find a lexical double causative. Periphrastic causatives however, have the potential to always be applied iteratively (Mom made Dad make my brother make his friends leave the house.).

Many Indo-Aryan languages (such as Hindustani) have lexical double causatives.

For morphological causatives, some languages do not allow single morpheme to be applied twice on a single verb (Jarawara) while others do (Capanawa, Hungarian, Turkish, Kabardian, Karbi), though sometimes with an idiomatic meaning (Swahili's means force to do and Oromo's carries an intensive meaning). Other languages, such as Nivkh, have two different morphological mechanisms that can apply to a single verb. Still others have one morpheme that applies to intransitives and another to transitives (Apalai, Guarani). All of these examples apply to underlying intransitive verbs, yielding a ditransitive verb. So far, there are no reliable data for a morphological double causative of a transitive verb, resulting in a verb with four arguments.^{[2]: 59–61}

Causative (repetitive)

Yokuts, an indigenous language spoken in California, has a morpheme, -lsaˑ, that indicates causation in addition to repetition. This is separate from the language's normal mechanisms of causation.

This implies a single act by the causer, but multiple acts by the causee.^[19]

Causative voice

The causative voice is a grammatical voice promoting the oblique argument of a transitive verb to an actor argument. When the causative voice is applied to a verb, its valency increases by one. If, after the application of the grammatical voice, there are two actor arguments, one of them is obligatorily demoted to an oblique argument.

Japanese, Turkish and Mongolian are examples of languages with the causative voice. The following are examples from Japanese:

Causal case

The causal or causative case (abbreviated CAUS) is a grammatical case that indicates that the marked noun is the cause or reason for something. It is found in the Dravidian languages Kannada^[20] and Telugu, the Native South American language Quechua, and Northeast Caucasian Archi. It is also found in extinct Tocharian B, an Indo-European language.

Causal-final case

The causal-final is a grammatical case in Hungarian (and Chuvash) expressing the meaning 'for the purpose of, for the reason that',^[21]: 93 and denoting price asked of or paid for goods.^[21]: 116 It is formed by adding the ending suffix -ért to the end of the noun, e.g. kenyér "bread" >kenyérért "for bread", e.g. elküldtem a boltba kenyérért "I sent him to the store for bread".^[21]: 115 It is not affected by vowel harmony in Hungarian.^[21]: 111

Shibatani

Shibatani^[7] lists three criteria for entities and relations that must be encoded in linguistic expressions of causation:

1. An agent causing or forcing another participant to perform an action, or to be in a certain condition
2. The relation between [the] two events [=the causing event, and the caused performing/being event] is such that the speaker believes that the occurrence of one event, the ‟caused event," has been realized at t2, which is after t1, the time of the ‟causing event"
3. The relation between causing event and caused event is such that the speaker believes the occurrence of the caused event depends wholly on the occurrence of the causing event—the dependency of the two events here must be to the extent that it allows the speaker a counterfactual inference that the caused event would not have taken place at a particular time if the causing event had not taken place, provided that all else had remained the same.

This set of definitional prerequisites allows for a broad set of types of relationships based, at least, on the lexical verb, the semantics of the causer, the semantics of the causee and the semantics of the construction explicitly encoding the causal relationship. Many analysts (Comrie (1981), Song (1996), Dixon (2000) and others) have worked to tease apart what factors (semantic or otherwise) account for the distribution of causative constructions, as well as to document what patterns actually occur cross-linguistically.

Comrie

Bernard Comrie^[22] focuses on the typology of the syntax and semantics of causative constructions proper. Crucially, Comrie (and others to be discussed here) distinguish between the linguistic encoding of causal relations and other extra-linguistic concerns such as the nature of causation itself and questions of how humans perceive of causal relations. While certainly not irrelevant, these extra-linguistic questions will, for now, be left aside. Comrie usefully characterizes causative events in terms of two (or more) microevents perceived of composing a macroevent, and encoded in a single expression (of varying size and form). Formally, he categorizes causatives into 3 types, depending on the contiguity of the material encoding the causing event and that encoding the caused event. These are: 1) lexical causatives, in which the two events are expressed in a single lexical item, as in the well-discussed case of English kill; 2) morphological causatives, in which the causing event and the caused event are encoded in a single verbal complex via causative morphology, and, prototypically, morphological marking showing the status of affected arguments. Finally, Comrie discusses analytic causatives, in which the causing event and the caused event are encoded in separate clauses.

Comrie's work is also noteworthy for having brought the notion of syntactic hierarchy to bear on the typology of causative constructions. A hierarchy of grammatical relations had already been formulated to help explain possibilities for relative clause formation (first presented as Keenan and Comrie's (1972) NP accessibility hierarchy; see Croft 1990: 147), and Comrie argued that a similar hierarchy was in play, at least in some constructions, in the marking of the original A argument when a base transitive clause is causativized. The hierarchy is as follows:

• subject > direct object > indirect object > oblique > genitive

Comrie's argument was, in short, that some causativized-transitive constructions mark the new A as belonging to the leftmost available slot in the above hierarchy. Dixon (2000) fleshes out a version this analysis in more detail.

Song

Presenting a typology of causatives and causation based on a database of 600 languages, Song^[23] is very critical of typological work that depends on statistical inference, citing data from the Niger-Congo family that contradicts some earlier claims that "languages within genera are generally fairly similar typologically". Song therefore culls data from every language for which adequate documentation is available to him, and categorizes the various causative constructions gleaned therefrom into three classes: COMPACT, AND and PURP.

Song employs the following terminology:

• [Scause] – the clause which denotes a causing event
• [Seffect] – the clause which denotes the caused event
• [Vcause] – verbal elements of [Scause]
• [Veffect]- verbal elements of [Seffect]^[23]: 20

The major differences between Song's analysis and Comrie (1981) and Dixon (2000), is that Song lumps the range of lexical and morphological causatives together under the label COMPACT,^[23]: 20 in which [Vcause] can be "less than a free morpheme" (e.g., bound morpheme [prefix, suffix, infix, circumfix, reduplication], zero-derivation, suppletion); or "a free morpheme",^[23]: 28 in which [Vcause] and [Veffect] form a single grammatical unit. Most of the examples given look like serial verb constructions, and no in-depth analysis is undertaken for some of the constructions in which [Vcause] and [Veffect] are less formally contiguous. Song notes this non-contiguity, but does not undertake to explain why it might be important.

The AND causative, for Song, is any construction with a separate [Scause] and [Seffect] i.e., in which "two clauses [are] involved".^[23]: 35 This, in theory, could include larger, multi-clausal expressions of causal relations which many analysts probably would not label a 'causative construction', e.g.: 'It rained yesterday, so they stayed home', but the boundaries of the AND causative category are not discussed.

One of Song's major contributions to the literature is fleshing out an analysis of his PURP causative. These are constructions which encode intended causation on the part of the causer, but which do not encode any outcome: i.e., the speaker encodes [Vcause] and causer intentionality, but remains agnostic as to whether [Veffect] was felicitously effected.

Talmy

Leonard Talmy^[24] conducts an in-depth investigation of different types of causal relations. Talmy refers to these as "lexicalization patterns," a term which remains unclear to me, given that few of the examples given in his discussion are lexical items, and most interpretations of "different types of causation incorporated in the verb root" are in fact wholly dependent on other morphosyntactic material in the clause. Let us first examine his list of possible (semantic) causative types,^{[24]: 69–70} with examples:

• autonomous events (non-causative) The vase broke.
• resulting-event causation The vase broke from a ball's rolling into it.
• causing-event causation A ball's rolling into it broke the vase.
• instrument causation A ball broke the vase.
• author causation (unintended) I broke the vase in rolling a ball into it.
• agent causation (intended) I broke the vase by rolling a ball into it.
• undergoer situation (non-causative) My arm broke (on me) when I fell.
• self-agentive causation I walked to the store.
• caused agency (inductive causation) I sent him to the store.

One question remaining to be explored is how this set of divisions usefully differs from other analysts' typologies of the semantics of encoding causal relations. Some overlap in the types of semantic information in play is immediately apparent, however: in cases of instrument causation ('the hammer broke the cup'), we would certainly expect the 'causer' to be acting directly [Dixon's criterion 6] and to be involved in the activity [criterion 9]; likewise, we would expect instances of caused agency to include more information on causee control on willingness [criteria 3 & 4].

Germanic languages

Sanskrit

In Sanskrit, there is a causative form of the verb (ṇijanta), which is used when the subject of a clause forces or makes the object perform an action. The causative suffix -ay is attached to the verbal root, which may cause vowel sandhi to take place:

• bhū "to be, exist" → bhāv-ay; for example, bhāvayati "he causes to be"
• khad "to eat" → khād-ay; for example, khādayāmi "I cause to eat" = "I feed"

Persian

In Persian, the causative form of the verb is formed by adding ân(i)dan to the present stem:

• xordan (to eat) → xor (present stem) → xorândan (to cause/make to eat)
• xandidan (to laugh) → xand (present stem) → xandândan (to cause/make to laugh)

Lithuanian

In Lithuanian, the causative form of the verb is made by adding suffix -in- to the present stem:

• skraidyti (to fly) → skraidinti (to make to fly)
• sėdėti (to sit) → sodinti (to make to sit)
• juoktis (to laugh) → juokinti (to make to laugh)

Latin

The topic of causatives has not been studied much for Latin, mainly because of its lack of productive morphological causative.^[6]: 2

Hindustani

Hindustani uses the infix -(l)ā- and -(l)vā- to make verbs causative.

• karnā "to do" → karānā "to have done" → "karvānā" → "to have someone make someone do."
• paṛhnā "to read" → paṛhānā "to make someone read" → "paṛhvānā" "to cause someone to make someone read."
• hilnā "to move" → hilānā "to have something moved" → hilvānā "to have someone make something move."
• pīnā "to drink" → pilānā "to have someone drink" → pilvānā "to have someone make someone drink": "Usne naukrānī se bachchõ-ko pānī pilvāyā" - "She had the maid make the kids drink water."

Bengali

The causative verbs are called prayōjaka kriẏā (প্রযোজক ক্রিয়া) in Bengali. In the simplest way, the causative form of a verb can be formed by adding the suffix "-nō" নো with the verbal noun form of the given verb.

• dēkhā দেখা 'to see' → dēkhānō দেখানো 'to show/to cause someone to see'.
• khāōẏā খাওয়া 'to eat' → khāōẏānō খাওয়ানো 'to feed/to cause someone to eat'.

From the verbal root (dhātu ধাতু in Bengali) perspective, the formation of causatives is done by adding the suffix "-ā" -আ with the verb roots ending with a consonant, and the suffix "-ōẏā" ওয়া with those roots ending with a vowel. Thus, the verbal root transformations of the two previously mentioned verbs are:

• dēkh দেখ্ → dēkhā দেখা
• khā খা → khāōẏā খাওয়া

These verb roots are thereafter inflected with tense, aspect and mood.

Finnish

Causative forms are also found in the Uralic languages of Europe, such as Finnish:

• syödä "to eat" → syöttää "to feed"
• täysi "full" → täyttää "to fill"
• haihtua "to evaporate" → haihduttaa "to vaporize"

The causative suffix is often used irregularly and/or because of historical reasons, as the following Finnish examples:

• olla "to be" → olettaa "to assume", not "to make exist"
• kirja- ancient "patterns (of embroidery or text)" but modern "book" → kirjoittaa "to write" ("transform into patterns of text"), not "to transform into books"

Hungarian

Hungarian marks the original subject of an intransitive differently in causative forms to convey direct causation. If the causee is marked by the accusative case, a more direct causation is implied than if the instrumental case is used.^{[2]: 45–6}

Māori

In Māori, an Austronesian language, the whaka- prefix can be added to a verb:

• ako "to learn" becomes whakaako "to teach" (to cause to learn)

Philippine languages

In Philippine languages such as Tagalog and Ilokano, the pa- prefix is added to verbal forms and to adjectives to form causatives:

• dakkel "big (adjective)" → padakkelen "to enlarge" (Ilokano)
• kain "eat" → pakainin "to make eat, to feed" (Tagalog)

Malay

In Malay/Indonesian, causatives are formed from the prefix per- (it becomes memper- after actor focus/active prefix meng-, expected *memer- as in *memerhatikan found informally). While most languages uses their causative affix for derivational purposes, it has integrated to Malay verb inflection system.

• baik "good" → memperbaiki "to fix something"
• tanggung jawab "responsibility" → mempertanggungjawabkan "to take responsibility"

Classical Nahuatl

Classical Nahuatl, in the Uto-Aztecan language family, has a well-developed morphological system of expressing causation by means of the suffix -tia:

• tlacua "he eats something" → quitlacualtia "he feeds him/her/it something" the causative makes the intransitive verb "eat something" into the bitransitive verb "feed someone something," requiring a pronominal prefix, in this case qui- "him/her/it")

Causativity is often used in honorific speech in Classical Nahuatl, and rather than simply "doing," the honored person "causes himself to do."^[32]

Hupa

Golla, in his (1970) descriptive grammar of Hupa (summarized in Sapir and Golla (2001)), describes three classes of morphologically derived causatives:

1. causatives from descriptive neuters with ƚ-classifier (176)

   ni-whon’ 'be good, beautiful' → O ni-(w)-ƚ-whon’ 'cause O to be beautiful'

2. causatives from primary extension neuters with ƚ- classifier (76-77, 201)

   na-…‘a’ 'O hangs' → na-O-ƚ-‘a’ 'hang O up'

3. causatives from primary intransitive action themes (76-77, 204)

   ti-ch’id 'grow tired' → O-ti-ƚ-ch’id 'tire O out'

While Golla does not generalize about the semantics of verb themes that are compatible with causative ƚ-, several preliminary generalizations can be made. Firstly, in the three cases described by Golla, O [the undergoer] is neither controlling nor agentive; O is largely patientive in all cases. Secondly, the causer appears to be acting directly on O. Thirdly, none of the examples given (including the examples above) involve the causativization of a base-transitive theme.

Kinyarwanda

Kinyarwanda uses periphrastic causatives and morphological causatives.

The periphrastic causatives use the verbs -teer- and -tum-, which mean cause. With -teer-, the original S becomes the O of the main clause, leaving the original verb in the infinitive, just like in English:^{[36]: 160–1}

With -túm-, the original S remains in the embedded clause and the original verb is still marked for person and tense:^{[36]: 161–2}

Derivational causatives use the -iish- morpheme, which can be applied to intransitives (3) or transitives (4):^[36]: 164

The suffix -iish- implies an indirect causation (similar to English have in "I had him write a paper"), but other causatives imply a direct causation (similar to English make in "I made him write a paper").^[36]: 166

One of the more direct causation devices is the deletion of what is called a "neutral" morpheme -ik-, which indicates state or potentiality. Stems with the -ik- removed can take -iish, but the causation is then less direct:^[36]: 166

-mének-	"be broken"	-mén-	"break"	-méneesh-	"have (something) broken"
-sáduk-	"be cut"	-sátur-	"cut"	-sátuz-	"have (something) cut"

Another direct causation maker is -y- which is used for some verbs:^[36]: 167

General reading

• Croft, W. 2003. Typology and Universals, 2nd ed. New York: Cambridge University Press.
• Dixon, R.M.W. and Alexandra Y. Aikhenvald. 2000. "Introduction". In Changing Valency: Case Studies in Transitivity, Dixon, R.M.W. and Alexandra Y. Aikhenvald, eds: 1–28. New York: Cambridge University Press.
• Goertz, G. et al. 2006. "Use of causatives in Navajo: Syntax and morphology." In Santa Barbara Papers in Linguistics, Volume 18: Proceedings from the Ninth Workshop on American Indigenous Languages.
• Huang, S. and Lily I-Wen Su. 2005. "Iconicity as Evidenced in Saisiyat Linguistic Coding of Causative Events." Oceanic Linguistics, Vol. 44, No. 2 (Dec., 2005): 341–356.
• Song, J.J. (2001) Linguistic Typology: Morphology and Syntax. Harlow and London: Pearson (Longman).
• Talmy, L. 2000. Toward a Cognitive Semantics Volume 1: Concept Structuring Systems. Cambridge: MIT Press.

Causatives of a specific language

• Kinyarwanda: Kimenyi, Alexandre (1980). A Relational Grammar of Kinyarwanda. University of California Press. p. 160–72.