This volume presents the outcome of a workshop, held in Amsterdam in 1985, on the nature, even possibility, of explanation in Historical Linguistics: why changes take place and others do not, and why they occur at a particular time and place. The workshop, and this volume, aim to explore questions such as i) are the factors which explain the actuation of a change different from those that explain its implementation?; ii) is it possible to give a typology of changes?; iii) should linguistic explanation hope to meet the same requirements as explanation in the pure sciences?; iv) are all linguistic changes necessarily the product of variation?; ...

In Basic Linguistic Theory R. M. W. Dixon provides a new and fundamental characterization of the nature of human languages and a comprehensive guide to their description and analysis. In three clearly written and accessible volumes, he describes how best to go about doing linguistics, the most satisfactory and profitable ways to work, and the pitfalls to avoid. In the first volume he addresses the methodology for recording, analysing, and comparing languages. He argues that grammatical structures and rules should be worked out inductively on the basis of evidence, explaining in detail the steps by which an attested grammar and lexicon can built up from observed utterances.

In Basic Linguistic Theory R. M. W. Dixon provides a new and fundamental characterization of the nature of human languages and a comprehensive guide to their description and analysis. In three clearly written and accessible volumes, he describes how best to go about doing linguistics, the most satisfactory and profitable ways to work, and the pitfalls to avoid.  Volume 2 offer in-depth tours of underlying principles of grammatical organization, as well as many of the facts of grammatical variation.

The articles in this edited volume represent a range of approaches to studying the role of verbal aspect in grammatical variation. Issues addressed include: defining the variable context; operationalizing aspectual distinctions as factors conditioning linguistic variation; and the appropriate number of aspectual distinctions and levels. Apart from bringing to light various methodological and analytical issues, this volume gathers together a unique collection of original research, based on spoken- and written-language corpora, of an array of languages and linguistic varieties

Understanding sociolinguistics as a theoretical and methodological framework hopefully could attempt to promote change and social development in human communities. Yet it still presents important political, epistemological, methodological and theoretical challenges. A sociolinguistics of development, in which the revitalization of linguistic communities is the priority, opens new perspectives for the emerging field of linguistic documentation, in which the societal aspects of research, stressed by sociolinguistics, have frequently been marginal.