In this volume, originally published in 1978, the authors survey the historical and contemporary research literature pertaining to two-dimensional visual-geometric illusions. They bring together much of the known data, summarising and evaluating theories that have been offered to explain these phenomena. Coren and Girgus provide a new conceptual framework that suggest that visual illusions are not unitary phenomena. Within this framework, illusions do not represent a breakdown in normal perceptual processing. Rather, it is proposed that each illusion is produced by a number of mechanisms operating at different levels in the visual information processing system. The book contains an extensive collection of illusion figures. It will be essential reading for all of those concerned with vision and visual perception, since it integrates the study of illusions into the main body of psychological and perceptual theories at the time.

While social psychology has made fundamental contributions to the understanding of basic principles that underlie social behavior, these principles themselves--including expectancies, goals, explanations, arousal, social influence, interdependence, social conflict, persuasion, and social standards--have never been directly reviewed in a comprehensive manner. Filling a significant gap in the literature, this authoritative reference and text illuminates the essential processes, mechanisms, and structures at different levels of analysis--biological, cognitive, motivational, interpersonal, and group/cultural--to provide access to the central principles that guide social psychological investigation. Formatted for easy reference and comparison, each chapter describes alternative conceptualizations of a particular principle and reviews research supporting (and failing to support) these different perspectives. Covering all the significant theories and research programs, the empirical literature is surveyed not for the traditional function of providing comprehensive reviews of content areas, but for its relevance to broad conceptual issues. This enables readers to get a better idea of the "big picture" concerning various social psychological principles, facilitating their ability to keep track of conceptual trends and developments in social psychology. An essential tool for all social psychologists, as well as professionals in related fields, this authoritative handbook also serves as an invaluable text for advanced classes in social psychology.

How do people decide whether to sacrifice now for a future reward or to enjoy themselves in the present? Do the future gains of putting money in a pension fund outweigh going to Hawaii for New Year's Eve? Why does a person's self-discipline one day often give way to impulsive behavior the next? Time and Decision takes up these questions with a comprehensive collection of new research on intertemporal choice, examining how people face the problem of deciding over time. Economists approach intertemporal choice by means of a model in which people discount the value of future events at a constant rate. A vacation two years from now is worth less to most people than a vacation next week. Psychologists, on the other hand, have focused on the cognitive and emotional underpinnings of intertemporal choice. Time and Decision draws from both disciplinary approaches to provide a comprehensive picture of the various layers of choice involved. Shane Frederick, George Loewenstein, and Ted O'Donoghue introduce the volume with an overview of the research on time discounting and focus on how people actually discount the future compared to the standard economic model. Alex Kacelnik discusses the crucial role that the ability to delay gratification must have played in evolution. Walter Mischel and colleagues review classic research showing that four year olds who are able to delay gratification subsequently grow up to perform better in college than their counterparts who chose instant gratification. The book also delves into the neurobiology of patience, examining the brain structures involved in the ability to withstand an impulse. Turning to the issue of self-control, Klaus Wertenbroch examines the relationship between consumption and available resources, showing, for example, how a high credit limit can lead people to overspend. Ted O'Donoghue and Matthew Rabin show how people's awareness of their self-control problems affects their decision-making. The final section of the book examines intertemporal choice with regard to health, drug addiction, dieting, marketing, savings, and public policy. All of us make important decisions every day-many of which profoundly affect the quality of our lives. Time and Decision provides a fascinating look at the complex factors involved in how and why we make our choices, so many of them short-sighted, and helps us understand more precisely this crucial human frailty.

The three-volume work Perceiving in Depth is a sequel to Binocular Vision and Stereopsis and to Seeing in Depth, both by Ian P. Howard and Brian J. Rogers. This work is much broader in scope than the previous books and includes mechanisms of depth perception by all senses, including aural, electrosensory organs, and the somatosensory system. Volume 1 reviews sensory coding, psychophysical and analytic procedures, and basic visual mechanisms. Volume 2 reviews stereoscopic vision. Volume 3 reviews all mechanisms of depth perception other than stereoscopic vision. The three volumes are extensively illustrated and referenced and provide the most detailed review of all aspects of perceiving the three-dimensional world. Volume 3 addresses all depth-perception mechanisms other than stereopsis. The book starts with an account of monocular cues to depth, including accommodation, vergence eye movements, perspective, interposition, shading, and motion parallax. A chapter on constancies in depth perception, such as the ability to perceive the sizes and shapes of objects as they move or rotate in depth, is followed by a chapter on the ways in which depth cues interact. The next chapter reviews sources of information, such as changing disparity, image looming, and vergence eye movements, used in the perception of objects moving in depth. Various pathologies of depth perception, including visual neglect, stereoanomalies, and albanism are reviewed. Visual depth-perception mechanisms through the animal kingdom are described, starting with insects and progressing through crustaceans, fish, amphibians, reptiles, birds, and mammals. The chapter includes a discussion of how stereoscopic vision may have evolved. The next chapter describes how visual depth perception is used to guide reaching movements of the hand, avoiding obstacles, and walking to a distant object. The next three chapters review non-visual mechanisms of depth perception. Auditory mechanisms include auditory localization, echolocation in bats and marine mammals, and the lateral-line system of fish. Some fish emit electric discharges and then use electric sense organs to detect distortions of the electric field produced by nearby objects. Some beetles and snakes use heat-sensitive sense organs to detect sources of heat. The volume ends with a discussion of mechanisms used by animals to navigate to a distant site. Ants find their way back to the nest by using landmarks and by integrating their walking movements. Several animals navigate by the stars or by polarized sunlight. It seems that animals in several phyla navigate by detecting the Earths magnetic field.

Accessibility is a concept central to integrated transport and land use planning. The goal of improving accessibility Ð for all modes, for all people Ð has made its way into mainstream transport policy and planning in communities worldwide. This unique book introduces new accessibility approaches to transport planning across Europe and the United States. The expert contributors present advanced interdisciplinary approaches in accessibility research and modelling with best practices in accessibility planning and evaluation, to better support integrated transport and land-use policy-making. This book will prove an absorbing read for scholars, researchers and students working on accessibility issues across different academic fields including transport geography, spatial economics and social science. Transport and urban planners will also find the book to be an invaluable reference tool.

Citizens are political simpletons--that is only a modest exaggeration of a common characterization of voters. Certainly, there is no shortage of evidence of citizens' limited political knowledge, even about matters of the highest importance, along with inconsistencies in their thinking, some glaring by any standard. But this picture of citizens all too often approaches caricature. Paul Sniderman and Benjamin Highton bring together leading political scientists who offer new insights into the political thinking of the public, the causes of party polarization, the motivations for political participation, and the paradoxical relationship between turnout and democratic representation. These studies propel a foundational argument about democracy. Voters can only do as well as the alternatives on offer. These alternatives are constrained by third players, in particular activists, interest groups, and financial contributors. The result: voters often appear to be shortsighted, extreme, and inconsistent because the alternatives they must choose between are shortsighted, extreme, and inconsistent. Facing the Challenge of Democracy features contributions by John Aldrich, Stephen Ansolabehere, Edward Carmines, Jack Citrin, Susanna Dilliplane, Christopher Ellis, Michael Ensley, Melanie Freeze, Donald Green, Eitan Hersh, Simon Jackman, Gary Jacobson, Matthew Knee, Jonathan Krasno, Arthur Lupia, David Magleby, Eric McGhee, Diana Mutz, Candice Nelson, Benjamin Page, Kathryn Pearson, Eric Schickler, John Sides, James Stimson, Lynn Vavreck, Michael Wagner, Mark Westlye, and Tao Xie.

Leaders face new challenges as they cope with changes in culture, technology and the workplace. In this edited volume, based on a conference at Claremont, scholars of leadership studies from three continents discuss the latest psychological research on interpersonal leader-follower relations. The book tackles the impact of distance - physical, interpersonal and social - on our organizations, governments and societies.