The book consists of international contributions to current scientific approaches in facial expression research. The contributions are based on the presentations held at the Inter¬national Meeting "Current and Futures Perspectives in Facial Expression Research: Topics and Methodological Questions" at the Institute of Psychology/University of Innsbruck in September 2007. The authors present important topics in facial expression research ran¬ging from studies in the field of clinical psychology, the relation between laughing/smiling and humour, facial expressions in chimpanzees and approaches from developmental and social psychology. Furthermore, there is a methodological focus in the book reflecting ad¬vantages, challenges, problems and different approaches in using the Facial Action Coding System (FACS) by Ekman, Friesen & Hager (2002). Throughout the book the discussion of assigning emotional meaning to observable facial behaviour presents a major line of rea¬soning. The book closes with an experts' discussion on current and future perspectives in facial expression research. This book will be valuable for experts in FACS-Research but should also be of interest to students and young researchers in this field reflecting the most important methodological issues in the field of facial behaviour research. The book consists of international contributions to current scientific approaches in facial expression research. The contributions are based on the presentations held at the Inter¬national Meeting ¿Current and Futures Perspectives in Facial Expression Research: Topics and Methodological Questions¿ at the Institute of Psychology/University of Innsbruck in September 2007. The authors present important topics in facial expression research ran¬ging from studies in the field of clinical psychology, the relation between laughing/smiling and humour, facial expressions in chimpanzees and approaches from developmental and social psychology. Furthermore, there is a methodological focus in the book reflecting ad¬vantages, challenges, problems and different approaches in using the Facial Action Coding System (FACS) by Ekman, Friesen & Hager (2002). Throughout the book the discussion of assigning emotional meaning to observable facial behaviour presents a major line of rea¬soning. The book closes with an experts¿ discussion on current and future perspectives in facial expression research. This book will be valuable for experts in FACS-Research but should also be of interest to students and young researchers in this field reflecting the most important methodological issues in the field of facial behaviour research.