Egophoricity refers to the grammaticalised encoding of personal knowledge or involvement of a conscious self in a represented event or situation. Most typically, a marker that is egophoric is found with first person subjects in declarative sentences and with second person subjects in interrogative sentences. This person sensitivity reflects the fact that speakers generally know most about their own affairs, while in questions this epistemic authority typically shifts to the addressee. First described for Tibeto-Burman languages, egophoric-like patterns have now been documented in a number of other regions around the world, including languages of Western China, the Andean region of South America, the Caucasus, Papua New Guinea, and elsewhere. This book is a first attempt to place detailed descriptions of this understudied grammatical category side by side and to add to the cross-linguistic picture of how ideas of self and other are encoded and projected in language. The diverse but conceptually related egophoric phenomena described in its chapters provide fascinating case studies for how structural patterns in morphosyntax are forged under intersubjective, interactional pressures as we link elements of our speech to our speech situation.

The expression of knowledge in language (i.e. epistemicity) consists of a number of distinct notions and proposed categories that are only partly related to a well explored forms like epistemic modals. The aim of the volume is therefore to contribute to the ongoing exploration of epistemic marking systems in lesser-documented languages from the Americas, Papua New Guinea, and Central Asia from the perspective of language description and cross-linguistic comparison. As the title of the volume suggests, part of this exploration consists of situating already established notions (such as evidentiality) with the diversity of systems found in individual languages. Epistemic forms that feature in the present volume include ones that signal how speakers claim knowledge based on perceptual-cognitive access (evidentials); the speaker’s involvement as a basis for claiming epistemic authority (egophorics); the distribution of knowledge between the speech-participants where the speaker signals assumptions about the addressee’s knowledge of an event as either shared, or non-shared with the speaker (engagement marking).

This edited volume brings together work on the evidential systems of Tibetan languages. This includes diachronic research, synchronic description of systems in individual Tibetan varieties and papers addressing broader theoretical or typological questions. Evidentiality in Tibetan languages interacts with other features of modality, interactional context and speaker knowledge states in ways that provide important perspectives for typologists and our general understanding of evidential systems. This book provides the first sustained attempt to capture this complexity and diversity from both a synchronic and diachronic perspective.

This essay relates together, in a clear and concise manner, four major groups of grammatical meanings — evidentiality for information source, egophopricity for access to knowledge, mirativity for expectation of knowledge, and epistemic modality for attitude to knowledge.