Clause Chaining Typology @cite{sarvasy-aikhenvald-2025} @cite{foley-r-d-van-valin-1984} @cite{longacre-2007} #
Cross-linguistic typology of clause chaining: multi-clause constructions in which one or more medial (dependent, morphologically reduced) clauses combine with a single final (independent, fully inflected) clause. The final verb supplies tense, mood, and often agreement for the entire chain.
Clause chaining is typologically distinct from both coordination (syntactically equal independent clauses) and subordination (embedded dependent clauses). Following @cite{foley-r-d-van-valin-1984} and @cite{longacre-2007}, chained medial clauses are dependent but not embedded — what Role & Reference Grammar calls "cosubordination."
Core structural asymmetry #
@cite{chomsky-1981} @cite{dryer-1992} @cite{givon-1983} @cite{sarvasy-2015}
The medial/final asymmetry is the defining property. Medial verbs carry a reduced morphological paradigm: some TAM categories are absent or restricted, while the final verb is fully inflected. The final verb's TAM values scope over the entire chain. This creates a characteristic "head-final scope" pattern where interpretive parameters flow rightward (in medial-final chains) from the final verb to all preceding medial clauses.
Switch-reference #
Many clause-chaining languages mark switch-reference (SR) on medial verbs: morphology tracking whether the subject of the next clause is the same as (SS) or different from (DS) the current clause's subject. SR is orthogonal to binding theory: binding constrains intra-clausal coreference via syntactic configuration, while SR tracks inter-clausal participant continuity via verbal morphology. Some languages (Greater Awyu) track topical participants rather than syntactic subjects, revealing SR as discourse-pragmatic rather than purely syntactic.
Typological parameters #
The formalization captures five parameter dimensions:
| Dimension | Types | Examples |
|---|---|---|
| Chain direction | medial-final, initial-medial | most SOV langs, some V-initial |
| SR system | none, SS/DS, SS/DS+temporal, multi-track | Korean, Nungon, Korowai |
| Medial morphology | per-category retention (full/restricted/absent) | 5 TAM dimensions |
| Interclausal semantics | 9 relation types marked on medial verbs | sequential, simultaneous,... |
| Bridging constructions | recapitulative, summary | tail-head linkage, generic verb |
Structural status of a clause within a chain.
The medial/final asymmetry is the defining property of clause chaining: medial verbs have reduced morphology and depend on the final verb for full TAM interpretation.
- medial : ClauseStatus
Dependent clause with reduced morphology. Typically carries converbal or participial marking (UD
VerbForm.Conv). May encode SR and interclausal semantic relations but lacks full tense/agreement. - final : ClauseStatus
Independent clause with full inflection. Supplies tense, mood, and often agreement for the entire chain. Exactly one per chain.
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Linear order of medial and final clauses.
Medial-final order is overwhelmingly dominant, correlating strongly with verb-final (SOV/SOV-flexible) word order. Initial-medial order is rare, attested in some verb-initial languages. The correlation follows from the head-direction generalization: the final verb is the "head" of the chain, and its position mirrors the language's general head direction.
@cite{sarvasy-aikhenvald-2025} §1.2.
- medialFinal : ChainDirection
Medial clauses precede the final clause. By far the most common pattern, strongly correlated with verb-final (OV) word order. E.g., Nungon, Turkish, Korean, Japanese, Manambu, Ku Waru.
- initialMedial : ChainDirection
An initial independent clause precedes medial dependent clauses. Rare; attested in some verb-initial and SVO languages (e.g., Barai, some Papuan languages with initial-verb tendencies).
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Predicted head direction for a given chain direction.
Medial-final chains place the "head" (final verb, which determines TAM for the chain) at the right edge — consistent with head-final languages. Initial-medial chains place it at the left edge — consistent with head-initial languages.
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How much of a morphological category a medial verb retains relative to independent (final) verbs.
Medial verbs are characteristically "partially finite": they may retain some TAM distinctions while lacking others. This three-way scale captures the cross-linguistic variation. The ordering is full > restricted > absent.
@cite{sarvasy-aikhenvald-2025} §§1.3-1.5; @cite{de-vries-2025} §2.
- full : CategoryRetention
Full paradigm: medial verbs mark this category with the same range of values as independent verbs. E.g., Turkish converbs retain aspect.
- restricted : CategoryRetention
Reduced paradigm: medial verbs distinguish fewer values than independent verbs. E.g., only realis/irrealis (binary mood), not the full mood paradigm; or only perfective/imperfective, not all aspect values.
- absent : CategoryRetention
Category unmarked: medial verbs carry no morphology for this category. Its value is inherited from the final verb's specification (scope). E.g., Nungon medial verbs lack tense entirely.
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- Phenomena.ClauseChaining.Typology.instDecidableRelCategoryRetentionLe Phenomena.ClauseChaining.Typology.CategoryRetention.absent b = isTrue trivial
Absent ≤ everything: the bottom of the retention scale.
Morphological profile of medial verbs along five TAM dimensions.
Each dimension records how much of the category's paradigm is retained on
medial verbs. A fully reduced medial verb (all .absent) is a bare converb;
a fully retained profile (all .full) approaches an independent verb.
This structure is effectively a 5-dimensional finiteness vector. The traditional binary finite/non-finite distinction is a coarsening that collapses all five dimensions into one bit.
- tense : CategoryRetention
Tense marking. Absent in many Papuan languages (Nungon, Ku Waru); restricted in some (Manambu: only yesterday/today/remote); full in some Turkic and Caucasian languages.
- agreement : CategoryRetention
Subject agreement. Often absent on medial verbs (agreement inherited from final verb when SS); sometimes restricted to person only.
- mood : CategoryRetention
Mood distinctions. Typically restricted to a binary realis/irrealis split when present at all. Full mood paradigms on medial verbs are rare cross-linguistically.
- polarity : CategoryRetention
Independent negation. Whether medial clauses can be independently negated. Some languages restrict negation to the final clause only (polarity scopes over chain); others allow medial negation.
- aspect : CategoryRetention
Aspectual distinctions. Some languages retain perfective/imperfective on medial verbs to distinguish completed vs. ongoing subevents.
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- Phenomena.ClauseChaining.Typology.instBEqMedialMorphProfile.beq x✝¹ x✝ = false
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Whether this profile represents maximal reduction (all categories absent).
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Whether this profile represents no reduction (all categories full).
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Expected UD VerbForm for a medial verb given its morphological profile.
Maximally or partially reduced medial verbs map to VerbForm.Conv (converb).
Fully retained medial verbs approach VerbForm.Fin, though they still differ
from independent verbs in lacking illocutionary force.
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Type of switch-reference system.
SR is a morphological system on medial verbs that tracks referential continuity across clause boundaries. It is orthogonal to binding theory: binding constrains coreference within a clause via syntactic configuration (c-command); SR tracks coreference between clauses via verbal morphology.
@cite{sarvasy-aikhenvald-2025} §§1.4-1.5; @cite{de-vries-2025} §§3-4; @cite{sarvasy-aikhenvald-2025} §3.
- none : SRSystem
No SR morphology. The language may still have clause chaining (e.g., Korean, Turkish, Japanese) but does not grammatically mark whether subjects corefer across clause boundaries.
- ssDs : SRSystem
Binary SS/DS distinction. Medial verbs carry morphology indicating same-subject (SS) or different-subject (DS) relative to the next clause. The canonical and most widespread SR system. E.g., Nungon, Ku Waru, many Papuan and Amerindian languages.
- ssDsTemporal : SRSystem
SS/DS plus temporal relation encoding. Medial verb morphology simultaneously signals referential continuity and temporal relation (sequential vs. simultaneous). SS-sequential, SS-simultaneous, DS-sequential, DS-simultaneous are distinct forms. E.g., Nungon, Amele, many Trans-New Guinea languages.
- multiTrack : SRSystem
Multi-track SR. Tracks continuity of more than one argument: e.g., subject and object, or subject and possessor. Rare. E.g., Panoan languages (subject+object tracking).
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- Phenomena.ClauseChaining.Typology.instBEqSRSystem.beq x✝ y✝ = (x✝.ctorIdx == y✝.ctorIdx)
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What participant role(s) SR tracks.
Canonical SR tracks syntactic subjects. Some systems track topical participants (pragmatic, not syntactic) or multiple arguments.
- subjectOnly : SRTarget
Track syntactic subject only. The canonical and most widespread pattern. E.g., Nungon, Ku Waru, most Papuan and Amerindian languages.
- subjectAndObject : SRTarget
Track both subject and object. Rare. E.g., some Panoan languages.
- topicBased : SRTarget
Track the topical participant, which may not be the syntactic subject. The tracked referent is determined by discourse prominence rather than grammatical function. E.g., Greater Awyu languages (@cite{de-vries-2025} §4.4).
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- Phenomena.ClauseChaining.Typology.instBEqSRTarget.beq x✝ y✝ = (x✝.ctorIdx == y✝.ctorIdx)
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SR marking asymmetry.
Cross-linguistically, SS forms tend to be morphologically simpler (shorter, less marked) than DS forms. This asymmetry reflects the discourse-pragmatic default: subject continuity is the unmarked expectation in connected discourse.
- ssUnmarked : SRMarkedness
SS is the morphologically unmarked member (shorter, zero, or suffix-only). DS carries overt marking. The cross-linguistically dominant pattern.
- dsUnmarked : SRMarkedness
DS is the morphologically unmarked member. Rare.
- symmetric : SRMarkedness
SS and DS are both overtly marked with comparable morphological weight.
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Semantic relation between a medial clause and the next clause in the chain.
These relations may be encoded on the medial verb (via dedicated morphology or converbal suffixes), inferred from context, or signaled by the SR system (e.g., SS-sequential vs. SS-simultaneous as distinct forms).
@cite{sarvasy-aikhenvald-2025} §1.4; @cite{longacre-2007}.
- sequential : InterclauseRelation
- simultaneous : InterclauseRelation
- causal : InterclauseRelation
- conditional : InterclauseRelation
- concessive : InterclauseRelation
- manner : InterclauseRelation
- contrastive : InterclauseRelation
- additive : InterclauseRelation
- purpose : InterclauseRelation
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Whether a relation involves temporal ordering.
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Whether a relation can be encoded purely via SR morphology (without a separate connective or adverbial suffix). In many Papuan languages, SR forms directly encode sequential vs. simultaneous, while other relations require additional marking.
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Discourse-level bridging constructions that span clause chain boundaries.
These are characteristic of oral narrative in clause-chaining languages and serve to structure discourse into episodes.
@cite{sarvasy-aikhenvald-2025} §1.6; @cite{sarvasy-aikhenvald-2025} §3.3.
- recapitulative : BridgingType
Recapitulative (tail-head) linkage: the first medial clause of a new chain repeats (wholly or in reduced form) the final clause of the preceding chain. Creates cohesion across chain boundaries in oral narrative. E.g., Nungon, Ku Waru, many Trans-New Guinea languages.
- summary : BridgingType
Summary linkage: a generic verb form (typically 'do' or 'say') summarizes the entire preceding episode before the next chain begins. E.g., Ku Waru ab-, Manambu a-yk-.
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The three major clause-linking strategies, following @cite{foley-r-d-van-valin-1984}.
This type provides shared vocabulary across the clause-combining phenomenon directories (Coordination, Complementation, FillerGap, ClauseChaining). The key insight: clause chaining is neither coordination nor subordination but a third strategy — dependent but not embedded.
- coordination : ClauseLinkingStrategy
Coordination: syntactically equal, independent clauses joined by a conjunction or juxtaposition. Neither clause is embedded in the other. E.g., "John sang and Mary danced."
- subordination : ClauseLinkingStrategy
Subordination: one clause is embedded within the other as a syntactic constituent (complement, relative clause, adverbial clause). The embedded clause is both dependent and structurally contained. E.g., "I know [that John sang]."
- cosubordination : ClauseLinkingStrategy
Cosubordination: one clause is dependent on the other (reduced morphology, cannot stand alone) but is not embedded as a constituent. The medial clause is structurally adjacent, not contained within the final clause. Clause chaining is the prototypical instantiation. E.g., Nungon: "he having.come, she cooked" (medial + final).
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Clause chaining is cosubordination: dependent but not embedded.
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Whether the dependent clause is embedded as a syntactic constituent.
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Whether the dependent clause is morphologically reduced (non-independent).
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Full clause chaining parameter bundle for a language.
Captures the five major typological dimensions:
- Chain structure (direction, length, non-canonical possibilities)
- Switch-reference (system type, target, obligatoriness, markedness)
- Medial verb morphology (5-dimensional TAM retention profile)
- Interclausal semantics (which relations are grammatically marked)
- Discourse bridging (recapitulative and/or summary linkage)
- direction : ChainDirection
Linear order of medial and final clauses.
- srSystem : SRSystem
Type of switch-reference system (if any).
What participant role(s) SR tracks (if SR exists).
- srObligatory : Bool
Whether SR marking is obligatory on every medial verb.
- srMarkedness : Option SRMarkedness
Markedness asymmetry in the SR system.
- medialMorph : MedialMorphProfile
Morphological profile of medial verbs.
- relationsMarked : List InterclauseRelation
Interclausal semantic relations grammatically marked on medial verbs.
- hasRecapLinkage : Bool
Whether recapitulative (tail-head) linkage is attested.
- hasSummaryLinkage : Bool
Whether summary linkage is attested.
- medialCanStandAlone : Bool
Whether medial clauses can occur without a final clause (non-canonical stand-alone medial; @cite{sarvasy-2015}).
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- Phenomena.ClauseChaining.Typology.instBEqClauseChainingParams.beq x✝¹ x✝ = false
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Whether the language has any SR system.
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Whether tense on medial verbs is inherited from the final verb (scope). This is the case when medial verbs lack tense marking entirely.
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Whether the chain has any discourse bridging constructions.
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- p.hasBridging = (p.hasRecapLinkage || p.hasSummaryLinkage)
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Whether temporal relations are encoded via SR morphology (as opposed to requiring separate adverbial marking).
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Expected UD VerbForm for medial verbs in this language.
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Clause chaining is cosubordination: dependent but not embedded.
Clause chaining involves dependent reduction (unlike coordination).
Medial-final chains predict head-final word order.
Initial-medial chains predict head-initial word order.
A maximally reduced medial verb maps to UD converb.
A fully retained medial verb maps to UD finite.
Temporal relations (sequential, simultaneous) are encodable via SR.
Non-temporal relations require additional marking beyond SR.