Activity theory is a way of describing and characterizing the structure of human - tivity of all kinds. First introduced by Russian psychologists Rubinshtein, Leontiev, and Vigotsky in the early part of the last century, activity theory has more recently gained increasing attention among interaction designers and others in the hum- computer interaction and usability communities (see, for example, Gay and H- brooke, 2004). Interest was given a signi?cant boost when Donald Norman suggested activity-theory and activity-centered design as antidotes to some of the putative ills of "human-centered...

This book constitutes the refereed proceedings of the 8th International Workshop on Task Models and Diagrams for User Interface Design, TAMODIA 2009, held in Brussels, Belgium, in September 2009. The 12 revised full papers presented were carefully reviewed and selected from numerous submissions for inclusion in the book. The workshop features current research and gives some indication of the new directions in which task analysis theories, methods, techniques and tools are progressing. The papers are organized in topical sections on business process, design process, model driven approach, task...

INTRODUCTION TO COMPUTER-AIDED DESIGN OF USER INTERFACES l 2 Jean Vanderdonckt and Angel Puerta,3 Jlnstitut d'Administration et de Gestion - Universite catholique de Louvain Place des Doyens, 1 - B-1348 Louvain-la-Neuve (Belgium) vanderdonckt@gant, ucl. ac, be, vanderdoncktj@acm, org Web: http: //www. arpuerta. com JKnowledge Systems Laboratory, Stanford University, MSOB x215 Stanford, CA 94305-5479, USA puena@camis. stanford. edu 3RedWhaie Corp., 277 Town & Country Village Palo Alto, CA 94303, USA puerta@ redwhale. com Web: http: //www. redwhale. com Computer-Aided Design of Vser Interfaces...