Definition:
Coherence is the quality of a text that allows it to be understood as a unified, meaningful whole — a continuous, connected piece of discourse rather than a random collection of sentences. Unlike cohesion (which is a surface-level property of the text’s formal linguistic structure), coherence is a cognitive property of the reader-text interaction: it is the reader’s ability to construct a coherent mental representation (a text model) by integrating the text’s propositions with background knowledge, inferencing, and world knowledge. A text that lacks coherence does not make sense even if it is grammatically well-formed; coherence is achieved when all parts of the text fit together into a consistent, interpretable whole.
Coherence as Reader Cognition
Coherence is not in the text — it is in the reader’s mind. Two readers with different background knowledge may find the same text more or less coherent.
> “The trophy would not fit into the suitcase because it was too large.”
> “The trophy would not fit into the suitcase because it was too small.”
Coherence interpretation of the pronoun it depends on pragmatic and semantic inference — there is no cohesive device that resolves the ambiguity. Readers use world knowledge to construct a coherent interpretation.
This is the situation model perspective (Kintsch, 1988): reading involves building a mental representation of the situation described by the text, not just understanding the text’s surface propositions.
Components of Coherence
Local coherence:
Adjacent sentences or clauses are meaningfully connected — each sentence relates to the immediately preceding ones. Breakdowns in local coherence feel like abrupt, unmotivated topic shifts.
Global coherence:
The text as a whole is unified around a central topic, argument, or narrative. A globally coherent text has a discernible macro-structure (thesis-development-conclusion; problem-solution; narrative arc).
Coherence relations:
Researchers (Mann & Thompson, Rhetorical Structure Theory; Sanders et al., Coherence Relation theory) have catalogued the logical/semantic relations that hold between propositions for coherence:
- Elaboration, Explanation, Justification
- Contrast, Concession
- Cause, Result, Purpose
- Sequence, Background, Enablement
Coherence vs. Cohesion
| Cohesion | Coherence | |
|---|---|---|
| Nature | Linguistic / formal | Cognitive / interpretive |
| Location | In the text | In the reader |
| Mechanism | Grammatical ties (pronouns, conjunctions) | Inference, schemas, topic continuity |
| Sufficiency for sense | Necessary but not sufficient | Sufficient (can exist without explicit cohesion) |
Example of cohesive-but-incoherent text:
> “The sun rose gently. However, she ordered orange juice. Therefore, frogs are green.”
(All cohesive devices present; no coherent meaning.)
Example of coherent-but-less-cohesive text (minimal cohesive devices; still coherent via inference):
> “Dinner was cold. John had forgotten to cook it.”
(Coherent via causal inference — no explicit causal connective needed.)
Coherence and L2 Writing
L2 writers’ texts are often evaluated poorly on coherence even when grammatically adequate:
- Topic drift — new ideas introduced without contextual motivation
- Lack of explicit signaling of coherence relations (abrupt transitions)
- Overly reliance on cohesive devices as a substitute for semantic connection
Writing instruction teaches rhetorical structure — how to organize arguments, paragraphs, and discourse so that global and local coherence are maintained.
Coherence in L2 Reading
L2 readers may struggle to construct coherent text models because:
- Insufficient vocabulary → excessive inferencing effort exhausts working memory
- Different L1 rhetorical conventions → unfamiliar discourse patterns seem incoherent
- Limited background knowledge → inability to fill inferencing gaps
History
The study of coherence developed within text linguistics and discourse analysis in the 1970s and 1980s. Halliday and Hasan’s (1976) foundational work Cohesion in English distinguished between cohesion (surface-level textual ties) and coherence (the underlying semantic-pragmatic unity), establishing the distinction that has shaped subsequent text analysis. Van Dijk and Kintsch (1983) developed cognitive models of coherence that distinguished local coherence (sentence-to-sentence connection) from global coherence (the overall topical unity of a text), influencing both discourse processing research and reading comprehension theory. Grice’s (1975) cooperative principle provided a pragmatic account of how listeners infer coherence even when it is not explicitly marked — extending coherence from a textual property to a cognitive-communicative achievement.
Common Misconceptions
“Coherence is the same as cohesion.” Cohesion refers to the surface-level grammatical and lexical devices that link sentences (reference, substitution, conjunction, lexical repetition). Coherence is the underlying unity of meaning — a text can be cohesive (with many linking devices) without being coherent, and a text can be highly coherent with minimal explicit cohesive markers if readers share sufficient background knowledge.
“Coherence is a property of texts.” Contemporary discourse analysis treats coherence as a collaborative interpretive achievement: readers and listeners construct coherence through their background knowledge, pragmatic reasoning, and inferencing. A text that is coherent for an expert reader may be incoherent to a novice who lacks the domain knowledge needed to fill inferential gaps.
Criticisms
Defining what “coherence” means precisely has been a persistent challenge — it is intuitive as a concept but difficult to operationalize for linguistic analysis or assessment. The distinction between coherence (semantic/pragmatic) and cohesion (formal/lexical) has been criticized as less clear than originally proposed, with many researchers arguing the two are interdependent rather than orthogonal. In L2 writing assessment, coherence is often conflated with organization, making it difficult to give learners precise diagnostic feedback about what makes their writing incoherent.
Social Media Sentiment
Coherence in writing is a frequent discussion topic in academic writing help communities, EFL/ESL teacher forums, and writing-focused subreddits. The distinction between coherence and cohesion is a common pedagogical explanation point on EFL teacher blogs and YouTube channels, and learner-focused content about making writing “flow” consistently invokes coherence principles without using the technical term. The concept is less prominent in oral language learning discussions but appears in discourse about sounding natural in conversation.
Last updated: 2026-04
Practical Application
For L2 learners, developing coherence in writing means more than using transition words — it involves building schema-level knowledge of how information is structured in the target language culture and building the lexical range needed to signal semantic connections at the paragraph and text level. For L2 reading comprehension (especially academic reading), low coherence tolerates more background knowledge gaps, so building domain vocabulary through SRS is directly relevant.
Related Terms
See Also
Research
Halliday, M. A. K., & Hasan, R. (1976). Cohesion in English. Longman.
The foundational text distinguishing cohesion from coherence in English discourse, documenting the five types of cohesive ties (reference, substitution, ellipsis, conjunction, lexical cohesion) and establishing the framework for all subsequent English text analysis and L2 writing assessment research.
Van Dijk, T. A., & Kintsch, W. (1983). Strategies of Discourse Comprehension. Academic Press.
Develops the cognitive model of local and global coherence in discourse comprehension, connecting textual coherence to the psychological structures readers build during text processing — the theoretical bridge between linguistics and cognitive psychology in coherence research.
Widdowson, H. G. (1978). Teaching Language as Communication. Oxford University Press.
Introduces the distinction between language use as text (cohesion) and language use as discourse (coherence) from a language teaching perspective, making the case that communicative language teaching must develop learners’ capacity to produce and interpret coherent discourse rather than merely grammatical sentences.