This volume is not an attempt to give a comprehensive treatment of the many facets of intelligence. Rather, the intention is to present multiple approaches to interesting and novel ways of looking at old problems. The focus is on the visual and some of the conceptual intelligences. Vision is man's primary cognitive contact with the world around him, and we are vividly reminded of this by Roman Jakobson's autobiographical note, "The Evasive Initial" with which this volume begins. That we see the world as well as we do is something of a miracle. Looking out through our eyes, our brains give us...

Optic flow provides all the information necessary to guide a walking human or a mobile robot to its target. Over the past 50 years, a body of research on optic flow spanning the disciplines of neurophysiology, psychophysics, experimental psychology, brain imaging and computational modelling has accumulated. Today, when we survey the field, we find independent lines of research have now converged and many arguments have been resolved; simultaneously the underpinning assumptions of flow theory are being questioned and alternative accounts of the visual guidance of locomotion proposed. At this...

Communication is one of the most challenging human phenomena, and the same is true of its paradigmatic verbal realization as a dialogue. Not only is communication crucial for virtually all interpersonal relations; dialogue is often seen as offering us also a paradigm for important intra-individual processes. The best known example is undoubtedly the idea of concep tualizing thinking as an internal dialogue, "inward dialogue carried on by the mind within itself without spoken sound," as Plato called it in the Sophist. At first, the study of communication seems to be too vaguely defmed to have...