"GENERAL AIMS OF THE SYMPOSIUM - Our symposium is intended to explore the complex interrelations between perceptual and other cognitive activity in the encountering of our everyday environment. The discussion will focus on the controversy whether "available optical stimulus information" as conceptualized by the late James Gibson (1979) is sufficient for supporting and guiding goal-directed action or whether it has to be supplemented by additional cognitive processing. SPECIFIC TOPICS - We shall deal with large scale, outdoor environments first, and then also look at the smaller scale - the behavioural affordances of everyday commodities and industrial design. With regard to the first theme, there will be papers on wayfinding as well as on representation - of environments. With regard to design at the smaller scale we shall examine the technqiue of eye movement recording as an indicator for specific cognitive activity."