iii International Society for Psychophysics

iv Preface Välkommen to the beautiful city of Lund in the province of Skåne, southern Sweden. It is an honor to host this year's 30th Annual Meeting of the International Society for Psychophysics (ISP) in Lund. Historically, Lund is one of the oldest cities in Sweden dating back to 990. Combining historic tradition with a young student population, Lund is a safe city with vibrant academic character, quaint cobble-stoned streets and, befitting of a young healthy population, bicycles. When Fechner presented his new transdisciplinary idea of " Psychophysik " , he detailed a scientific method for studying relations between the physical and mental world of sensation and perception. Theoretical and methodological advance are still in focus today. This year, we are pleased to hear Hannes Eisler's tips from 55 years' research experience. In addition, the ISP and program committee are pleased to invite three speakers: Louis Narens, Simon Grondin, and Michael D. Lee. They are set to give stimulating talks on the scientific foundations of Stevens' power law, Weber fractions for time perception, and Bayesian methods for analyses of psychological models and data. We thank the Swedish Research Council (" Vetenskapsrådet ") for providing funds to invite speakers from outside Sweden to this year's conference. Adding to the diversity of the meeting, three theme sessions are planned by Rosana Tristão, Leah Fostick, and Åke Hellström. These theme sessions focus on " what's new in pain perception " , " individual differences in psychophysics " , and " crossmodal and supramodal psychophysics ". The welcome inclusion of these theme sessions promises to provide for lively discussion. Moreover, we have numerous fine free talks and posters related to the many aspects of psychophysical research. The presence of those directly concerned with the study of psychophysics, along with others who make use of psychophysical techniques, will ensure for a lively meeting of delegates at this year's Fechner Day conference. We thank the local city council for sponsoring the welcome reception. We also thank Jiří Wackermann, last year's conference organizer, for his invaluable help to get started and counsel. Also supporting the conference is Lund University who we thank for administrative support and for access to the university buildings situated, in splendid grounds, in the heart of Lund. We hope you enjoy the conference, stimulating intellectual discussions, and the relaxed ambience of Lund. Note: All conference sessions and the business meeting of the ISP …