William Croft's text weaves together recent research findings from sociolinguistics, historical linguistics, grammatical change, pragmatics, social variation, language contact and genetic linguistics.

This textbook analyses changes from every area of grammar and addresses recent developments in socio-historical linguistics.

2 Changes to the lexicon -- Introduction -- 2.1 Gaining words - lexical addition -- 2.1.1 Compounding -- 2.1.2 Affixation -- 2.1.3 Backformation -- 2.1.4 Conversion -- 2.1.5 Abbreviation -- 2.1.6 Acronyms -- 2.1.7 Blending -- 2.1.8 Commonization -- 2.1.9 Reduplication -- 2.1.10 Borrowing -- 2.1.11 Sound symbolism -- 2.1.12 A final word on the processes -- 2.2 Losing words - lexical mortality -- 2.2.1 Obsolescence -- 2.2.2 "Verbicide"--2.2.3 Reduction -- 2.2.4 Intolerable homonymy -- 2.3 Etymology - study of the origin of words -- Summary -- Further reading -- Exercises

Roger Lass is concerned about the nature of argumentation within linguistics and the status of its data and theoretical constructs. Through an examination of standard strategies of explanation in historical linguistics (particularly of phonological change), in the light of past approaches to scientific epistemology, Dr Lass convincingly demonstrates that attempts to model explanations of linguistic change on those of the physical sciences are failures both in practice and in principle. Linguists can neither assimilate their discipline crudely to the natural or the other human sciences nor, at the other extreme, shelter behind the notion of a private self-validating paradigm. Although Dr Lass outlines some tentative paths towards an alternative epistemology, his main concern is that linguists should confront the philosophical implications of their subject, and he raises questions which both linguists and philosophers will need to consider.

Experts from psycholinguistics and English historical linguistics address core factors in language change.

A book that uses domain-general learning theory to explain recurrent trajectories of language change. In this book, Vsevolod Kapatsinski argues that language acquisition—often approached as an isolated domain, subject to its own laws and mechanisms—is simply learning, subject to the same laws as learning in other domains and well described by associative models. Synthesizing research in domain-general learning theory as it relates to language acquisition, Kapatsinski argues that the way minds change as a result of experience can help explain how languages change over time and can predict the likely directions of language change—which in turn predicts what kinds of structures we find in the languages of the world. What we know about how we learn (the core question of learning theory) can help us understand why languages are the way they are (the core question of theoretical linguistics). Taking a dynamic, usage-based perspective, Kapatsinski focuses on diachronic universals, recurrent pathways of language change, rather than synchronic universals, properties that all languages share. Topics include associative approaches to learning and the neural implementation of the proposed mechanisms; selective attention; units of language; a comparison of associative and Bayesian approaches to learning; representation in the mind of visual and auditory experience; the production of new words and new forms of words; and automatization of repeated action sequences. This approach brings us closer to understanding why languages are the way they are, Kapatsinski contends, than approaches premised on innate knowledge of language universals and the language acquisition device.

This new introduction explores all aspects of language change, with an emphasis on the role of cognition and language use.