Explanation
Evidentiality comprises linguistic means by which speakers indicate how they gained access to information: through direct perception, inference, report, or another mediated route. In some languages such marking is grammatically obligatory, whereas others express it lexically or pragmatically. It does not automatically grade a statement as certain or uncertain; direct observation may be mistaken and reported information may be well supported. The concept therefore separates source of information from degree of confidence. It reveals that utterances convey not only contents but often traces of the epistemic path along which those contents reached the speaker.
Movement of thought
1. A statement first appears as information about a state of affairs. 2. A linguistic form marks how the speaker gained access to that information. 3. Hearers distinguish direct perception, inference, report, or another source path. 4. A counter-test separates source marking from confidence and from the truth of the claim. 5. The information returns as content with visible epistemic origin and a traceable route of transmission.
Scientific use case
Typological research compares obligatory evidential systems, while conversation analysis studies their pragmatic deployment. Experiments can test how source marking affects memory, trust, and attribution of responsibility.
Example
A speaker says, in effect, “The roofs are wet, so it must have rained.” The utterance marks inference rather than direct visual observation of the rainfall itself.
Counterexample
“It is certainly raining” expresses high confidence but does not yet identify an information source. “Anna tells me that it is raining” marks reported access without guaranteeing truth.
Distinction
Distinguish evidentiality from epistemic modality, mirativity, quotation, and a mere bibliographic citation. It primarily marks access to information; certainty, surprise, and truth are separate dimensions.
Effect on thought and perception
Evidentiality exposes routes of access to knowledge, distributes epistemic responsibility, and changes how listeners assess and weight claims.
Resonance
A statement carries the aftersound of its route into speech—seen, inferred, or retold—so that the source continues to vibrate within what is said.
Cite this entry
Reich, Michael (Hrsg./ed.): „Evidentiality“. Atlas der Sprache, AT-091-054. ATLAS 260, data model 1.6.0. https://atlasoflanguage.com/concept/AT-091-054The address remains stable; editorial content may evolve. Editorial reading state: 2026-10-15. Include your access date for precise references.
Historical background
De Haan’s WALS chapter separates evidential source from confidence and explicitly restricts its survey to grammaticalised evidentials. It excludes lexical adverbs and certain biclausal reports. This documents a disciplinary operationalisation narrower than the Atlas’s broad definition. The earlier grammars cited there were not reread, so a sufficient history of the concept remains to be reconstructed.
How conceptual history changes the analysis
A confident assertion need not mark a source. The scope of the chosen evidentiality concept must be explicit.
References for the historical section
- B-WALS-EVIDENTIAL · Semantic Distinctions of Evidentiality, §§1 and3, web lines5–70,107–109