His research interests include biology of cognition, biocognitive philosophy of language, (bio)semiotics, cognitive grammar, applied cognitive linguistics (TEFL).

It is an attempt to classify various correspondences between morphemes and phonetic sequences and is a part of cognitive grammar.

Important developments in cognitive linguistics include cognitive grammar, frame semantics, and conceptual metaphor, all of which are based on the idea that form-function correspondences based on representations derived from embodied experience constitute the basic units of language.

In construction grammar, cognitive grammar, and cognitive linguistics, a grammatical construction is a syntactic template that is paired with conventionalized semantic and pragmatic content.

Langacker develops the central ideas of cognitive grammar in his seminal, two-volume Foundations of cognitive grammar, which became a major departure point for the emerging field of Cognitive Linguistics.

Like construction grammar (developed by Langacker's student Adele Goldberg), and unlike many mainstream linguistic theories, cognitive grammar extends the notion of symbolic units to the grammar of languages.

Some of the theories that fall within this paradigm are construction grammar, cognitive grammar, and word grammar.

American linguistics outside the Chomskyan tradition includes functional grammar with proponents including Talmy Givón, and cognitive grammar advocated by Ronald Langacker and others.

In this respect, generative grammar takes a point of view different from cognitive grammar, functional, and behaviorist theories.

Construction grammar and cognitive grammar.