The four studies presented show how expertise, from the cultural-historical theory of activity, is constructed interactively in everyday problem situations. They also demonstrate that purely situational analyses of discourse are insufficient as attempts to explain expertise. The four studies are presented as individual chapters: (1) Expertise as…

Reviews communication capacities of computers that can be used to enhance the writing process; reports on recent studies of the social effects of using computers in writing classes, including a case study of student collaborative writing; and discusses research and teaching implications of research findings. (MBR)