The locus of concreteness effects in memory for verbal materials has been described here in terms of the processing of shared and distinctive information. This theoretical view is consistent with a variety of findings previously taken as support for dual coding, insofar as both verbal and perceptual information may be involved in comprehending high-imagery sentences and in learning lists of concrete words. But going beyond previous accounts of imagery, this view also can provide explanations for several findings that appear contradictory to the thesis that concrete and abstract materials differ in the form of their storage in long-term memory. Although this does not rule out a role for imagery in list learning or text comprehension, it is clear that the complex processes involved in comprehension and memory for language go beyond mechanisms supplied by a theory based on the availability of modality-specific mental representations. The task now is to determine the viability of the theory in other domains. Several domains of imagery research presented at EWIC provided fertile ground for evaluating my theoretical viewpoint. Although not all provide a basis for distinguishing representational theories of imagery from the imagery as process view, there are data in several areas that are more consistent with the latter than the former. In other cases, there are at least potential sources of evidence that would allow such a distinction.

The relationships between perception and imagery, imagery and spatial processes, memory and action: These are the main themes of this text The interest of experimental psychology and cognitive neuroscience on imagery and spatial cognition is remarkably increased in the last decades. Different areas of research contribute to the clarification of the multiple cognitive processes subserving spatial perception and exploration, and to the definition of the neurophysiological mechanisms underpinning these cognitive functions. The aim of this book is to provide the reader (post-graduate students as well as experts) with a complete overview of this field of research. It illustrates the way how brain, behaviour and cognition interact in normal and pathological subjects in perceiving, representing and exploring space. (Series B).

Imagery: Current Cognitive Approaches focuses on cognitive approaches to the study of imagery. Topics range from the brief image or icon, which serves as the source of storage in short-term memory, to global behavior changes, including hallucinatory imagery under the influence of drugs and hypnotic states. The role of the image in verbal learning and the relationship of the image to both sensory and cognitive aspects of perception are also considered. Comprised of six chapters, this book begins with a discussion on the relationship between imagery and language and a review of some specific evidence pertaining to the psycholinguistic problems of meaning, comprehension, and the learning and retention of verbal material. Subsequent chapters deal with visual perception and the function of iconic storage; different theoretical views on the definition of image; and processing of the stimulus in imagery and perception. The book concludes by analyzing how vivid imagery, "hallucinations", and other alterations in visual perception are produced by LSD and also by suggestions given under hypnosis. This monograph will be of interest to graduate students, teachers, and researchers of cognitive psychology, as well as to clinical psychologists and psychiatrists.

Si nce the beginning of the 1970's the psychological study of imagery has shown a renewal of scientific interest reflected in a di verse body of theory, research paradigms, and data, which, with dil1iculty, ean be managed by a reader interested in imagery. Further, ment. al i lllagery appears to be an important construct in fields such as perception, memory, learning, thinking, motor behavior, cognitive development, and so on. With the diversity of theoretical and empirical work on imagery, cognition, and performance, it is increasingly problemut. ic to find a single source that provides contemporary overviews ill each field. Our purpose in organizing this book was to attempt all IIp-Lodate presentation of imagery research and theory. It is ollr hope that the volume will help serve as a starting point for the progress that will surely appear in the 1990's. This book hi:\:; its roots in the Second Workshop on Imagery and Cognition held at the University of Padova, Padova, Italy from September 21 to September 23,1988. An impressive array of research was presented at the workshop, and as the workshop unfolded several salient point. s elllerged. Though the research was diverse, it was even more so convergent on several main themes (e. g. , relations betweeen imagery and perception, imaginal coding in working memory, the role of imagery in v(;rbal memory and in memory for action events, imagery and problem solving).

Denis explores the role of imagery in reasoning, in resolving problems and in planning human action, and more generally, in human thought. The text is designed for the upper-level undergraduate or postgraduate in cognitive psychology or neuroscience.

Imagery, Language and Visuo-Spatial Thinking discusses the remarkable human ability to use mental imagery in everyday life: from helping plan actions and routes to aiding creative thinking; from making sense of and remembering our immediate environment to generating pictures in our minds from verbal descriptions of scenes or people. The book also considers the important theme of how individuals differ in their ability to use imagery. With contributions from leading researchers in the field, this book will be of interest to advanced undergraduates, postgraduates and researchers in cognitive psychology, cognitive science and cognitive neuropsychology.