One of the central problems in the study of modern cognition is the degree to which higher cognition is modularized: that is, how much are higher functions carried out by domain-specific, specialized, cognitive subsystems, rather than a highly general cognitive learning and inferring device? To date, ideas and proposals about modularity have been best developed in the study of vision and grammar. In the present volume, the usefulness of approaches employing modularity and domain specificity are further explored in papers on the development of biological thought, word meaning, symbols, and emotional development, as well as in the core area of grammar itself, by leading researchers in these fields. The volume also contains an introduction to some basic ideas and concepts in the study of modularity and domain-specificity, and some critical discussion of the overall problems of the modularity constraints approach to analyzing development.

One of the central problems in the study of modern cognition is the degree to which higher cognition is modularized: that is, how much are higher functions carried out by domain-specific, specialized, cognitive subsystems, rather than a highly general cognitive learning and inferring device? To date, ideas and proposals about modularity have been best developed in the study of vision and grammar. In the present volume, the usefulness of approaches employing modularity and domain specificity are further explored in papers on the development of biological thought, word meaning, symbols, and emotional development, as well as in the core area of grammar itself, by leading researchers in these fields. The volume also contains an introduction to some basic ideas and concepts in the study of modularity and domain-specificity, and some critical discussion of the overall problems of the modularity constraints approach to analyzing development.

Although current views of cognitive development owe a great deal to Jean Piaget, this field has undergone profound change in the years since Piaget's death. This can be witnessed both in the influence connectionist and dynamical system models have exerted on theories of cognition and language, and in how basic work in cognitive development has begun to influence those who work in applied (e.g., educational) settings. This volume brings together an eclectic group of distinguished experts who collectively represent the full spectrum of basic to applied aspects of cognitive development. This book begins with chapters on cognition and language that represent the current Zeitgeist in cognitive science approaches to cognitive development broadly defined. Following a brief commentary on this work, the next section turns to more applied issues. Although the focus here is on arithmetic learning, the research programs described have profound implications for virtually all aspects of education and learning. The last chapter views cognitive development from the perspective of ethology and evolutionary biology, and in so doing provides a theoretical perspective that is novel and in some ways, prescient: specifically, how can our views of cognition incorporate recent work in biology?

Reflecting the focus of a Jean Piaget Symposium entitled Biology and Knowledge: Structural Constraints on Development, this volume presents many of the emergent themes discussed. Among these themes are: Structural constraints on cognitive development and learning come in many shapes and forms and involve appeal to more than one level of analysis. To postulate innate knowledge is not to deny that humans can acquire new concepts. It is unlikely that there is only one learning mechanism, even if one prefers to work with general as opposed to domain-specific mechanisms. The problems of induction with respect to concept acquisition are even harder than originally thought.

After decades of research most scholars generally agree that language acquisition is a complex and multifaceted process that involves the interaction of innate biologically-based mechanisms devoted to language, other non-linguistic cognitive and social mechanisms, linguistic input, and information about the social and physical world. Theoretical work in the field of language acquisition now needs to focus in greater depth and detail on some specific aspects of this general model, which is the main goal of this book. The chapters in this volume provide some new insights into one of the most remarkable accomplishments achieved by almost all children. The particular questions that are raised by contributors include: * What kinds of constraints operate on the process of language development? * Which aspects of the acquisition process depend on language-specific mechanisms? * Are there critical brain structures necessary for the acquisition of language? * What role do cognitive and social mechanisms play in language development? * How critical is perceptual input about the physical and social world? * What is the specific role played by linguistic input in the child's construction of a linguistic system? Questions are addressed from the perspective of children who come to the task of acquiring language with many hurdles to overcome, including deafness and blindness, mental retardation, autism, and prenatal or perinatal brain damage involving the left hemisphere. Each section contributes some insight on how an innate language-specific biological substrate interacts with cognitive and social factors, as well as external information, to support the child's construction of a linguistic system. Studies of atypical children offer a singular contribution to this enterprise by allowing us to see the specific influences of each component, and in turn, they shed new light on how all children are able to acquire language so effortlessly and during such a brief period of development.

The concept of language is an elusive one, and the concept of mind even more so. Still the relation between them is of current interest in many quarters. The purpose of the Nobel Symposium on language and mind was to establish a forum for the discussion of this fundamental relation in a creative perspective. Representatives of several fields of knowledge, arts, and research gathered in an interdisciplinary setting, focusing on five aspects: literature, general linguistics, psycholinguistics, neurology, and artificial intelligence.