Several years ago, two of my colleagues and I had the opportunity to interview Fritz Heider-perhaps the most influential theorist in the field of social psychology (Harvey, Ickes, & Kidd, 1976). During our interview, Heider affirmed a belief that had guided his career since the 1920s, the belief that the study of human relationships is the most important task in which social scientists can engage. Although many social scientists would profess to share this belief, it is nonetheless true that the study of human relationships has been one of the most neglected tasks in the history of the social sciences-including psychology. What Heider found in the 1920s-that most psychologists acknowledged the importance of studying human relationships but at the same time tended to focus their own research on more "tractable" topics such as memory and cognition-is still very much evident in the 1980s. Even within the more specific domain of social psychology, a majority of researchers still choose to address those hybrid topics ("social cognition," "social categorization and stereotyping," "person memory," etc. ) that relate most directly to traditional areas of psychological research. Still other researchers, while choosing to study such important interpersonal phenomena as altruism, aggression, conflict, and interpersonal attraction, tend to focus so exclusively on these isolated and abstracted phenomena that they fail to provide a more inclusive view of the relationships in which these phenomena occur.

Library Journal Best Reference 2009 "An excellent gateway to further examination of any of the subdisciplines of relationship science, or as a research tool in its own right." —Library Journal Relationships are fundamental to nearly all domains of human activity, from birth to death. When people participate in healthy, satisfying relationships, they live, work, and learn more effectively. When relationships are distressed or dysfunctional, people are less happy, less healthy, and less productive. Few aspects of human experience have as broad or as deep effects on our lives. The Encyclopedia of Human Relationships offers an interdisciplinary view of all types of human associations—friends, lovers, spouses, roommates, coworkers, teammates, parents and children, cousins, siblings, acquaintances, neighbors, business associates, and so forth. Although each of these connections is unique in some respect, they share a common core of principles and processes. These three volumes provide a state-of-the-art review of the extensive theories, concepts, and empirical findings about human relationships. Key Features Compiles leading-edge information about how people think, feel, and act toward each other Presents the best in the field—authors who have contributed significant scientific knowledge about personal relationships over the past several decades. Offers a diverse approach to relationship science with contributions from psychology, sociology, communication, family studies, anthropology, physiology, neuroscience, history, economics, and legal studies Key Themes: Cognitive Processes in Relationships Communication Processes Creating and Maintaining Closeness Dating, Courtship, and Marriage The Dark Side of Relationships Emotion Processes in Relationships Family Friendship and Caregiving in Adulthood Health and the Biology of Relationships Methods for Studying Relationships Personality and Individual Differences Prevention and Repair of Relationship Problems Psychological Processes Sexuality Social Context of Relationships Social Relations in Childhood and Adolescence Theoretical Approaches to Studying Relationships Types of Relationships Our relationships influence virtually all aspects of our everyday existence and are of deep interest to students, researchers, academics, and laypeople alike. This Encyclopedia is an invaluable addition to any academic or public library.

This textbook provides an integrated and organized foundation for students seeking a brief but comprehensive introduction to the field of relationship science. It emphasizes the relationship field's intellectual themes, roots, and milestones; discusses its key constructs and their conceptualizations; describes its methodologies and classic studies; and, most important, presents the theories that have guided relationship scholars and produced the field's major research themes.

A fundamental assumption underlying the formation of our most important relationships is that they will persist indefinitely into the future. As an acquaintanceship turns into a friend ship, for example, both members of this newly formed interpersonal bond are likely to expect that their interactions will become increasingly frequent, diverse, and intimate over time. This expectation is perhaps most apparent in romantically involved couples who, through a variety of verbal and symbolic means, make explicit pledges to a long-lasting relationship. In either case, it is clear that these relationships represent something valuable to the individuals in volved and are pursued with great enthusiasm. Virtually all close relationships are formed within the context of mutually rewarding in teractions and/or strong physical attraction between partners. Friends and romantically in volved couples alike are drawn to one another because of similarity of attitudes, interests, and personality and, quite simply, because they enjoy one another's company. This enjoyment, cou pled with the novelty that characterizes new relationships, almost makes the continuation of the relationship a foregone conclusion. As relationships progress, however, their novelty fades, conflicts may arise between partners, negative life events may occur, and the satisfaction that previously characterized the relationships may diminish.

Attempting to collect, sort out, comment on and summarize from available literature the relevant information dealing with a specific problem is always a difficult task which necessarily involves sub jective choices and implies a considerable risk of errors and omis sions. The difficulty is increased when, as in the case of incompati bility in angiosperms, the subject to be treated traces its history to preDarwinian times and reflects the total sum of numerous in vestigations dealing with widely different disciplines, such as ge netics, cytology, biochemistry, systematics and physiology, which no single reviewer may pretend to master sufficiently to avoid completely the possibility of misinterpretation. Furthermore, the complexity of the task is further augmented by the fact that the student of incompatibility, confronted as he or she is with still poorly understood phenomena of genetic control and molecular recognition, often tends to be speculative and, in some instances, over-imaginative at the time of fitting research observations and experimental data into appropriate models, schemes and hypo theses. The compensation for such a state of affair is, however, a strong one and lies in the remarkable willingness and readiness of "in compatibilists" to cooperate, and to provide information, ex planations and illustrations to anyone attempting to penetrate into their universe of research and of reflection.

ÔThis is an excellent collection of papers that makes a significant contribution to the academic literature on social entrepreneurship. As well as highlighting opportunities for research in this area, the book emphasizes three issues that are central to social entrepreneurship Ð the role of leadership, the role of stakeholders, and the role of legitimacy Ð about which relatively written has been written. It therefore constitutes an important resource for social entrepreneurship researchers.Õ Ð Paul Tracey, University of Cambridge, UK ÔThis book is a compelling collection of key contributions in social entrepreneurship scholarship. It should be essential reading for all those seeking to understand the practical complexity and research richness of this emerging field.Õ Ð Alex Nicholls, University of Oxford, UK This impressive book outlines the complexities peculiar to the field of social entrepreneurship. Such complexities manifest at different moments in the development of a social entrepreneurial venture: at the opportunity recognition stage, at the venture early-stage, and in the long run in the search for a sustainable equilibrium between mission and profit. The contributors expertly focus on the individual, organizational and institutional levels of social entrepreneurship. They address the role of personal values and leadership in the conduct of social entrepreneurial initiatives while stressing the importance of stakeholders in relation to human resource management, innovation or opportunity discovery. Finally, they analyze the role of institutions in legitimating social entrepreneurs' actions. Social entrepreneurship, as a multi-disciplinary field, presents a unique opportunity and environment for researchers to contribute to academic-focused knowledge on both theoretical frameworks and practical skills on a holistic level. This volume offers a jumping off point to do so.

Entering the dating arena the second time around can be daunting, difficult and fraught with pitfalls. This book arms you with the tools you need to surmount the particular challenges of dating again after the end of a long-term relationship. Chapters One and Two include insightful quizzes that will help you to turn the mirror on yourself and consider what great qualities you have to bring to a new relationship. Chapter Three explores the notion of compatibility, while Chapter Four encourages you to pin down exactly what it is you want in a partner. Chapter Five provides expert advice on where to meet people, whether it be through friends and acquaintances, at work, through leisure activities or online. It even gives pointers on how to create a successful online profile. Dos and don'ts of dating are explored in Chapter Six, and Chapters Seven to Ten detail how to make a relationship work, from the early weeks through to marriage and parenthood. Lastly, Chapter Eleven signs off with some essential nuggets of wisdom from the eHarmony experts on how to keep your relationship fresh.

Humans are not unique in using tools. But human tool use differs from that known to occur in nonhumans in being very frequent, spontaneous, and diversified. So a fundamental issue is, what are the cognitive and neural bases of human tool use? This Research Topic of Frontiers provides a venue for leading researchers in the field of tool use to present original research papers, integrative reviews or theoretical articles that further our understanding of this topic. Articles address a wide range of issues including, for instance, the nature of the underlying representations (e.g., conceptual, sensorimotor), the mechanisms supporting the incorporation of tools into body schema, the link between imitation and tool use, or the evolutionary origins of human tool use. Articles are included from experimental psychology, neuropsychology, neuroimaging, neurophysiology, developmental psychology, ethology, comparative psychology, and ergonomics. The goal of this Research Topic of Frontiers is to provide a state-of-the-art view of the field.

Plant reproductive biology has undergone a revolution during the past five years, with the cloning, sequencing and localization of the genes important in reproduction. These advantages in plant molecular biology have led to exciting applications in plant biotechnology, including the genetic engineering of male sterility and other reproductive processes. This book presents an interesting and contemporary account of these new developments from the scientists in whose laboratories they have been made. The chapters focus on two areas: the molecular biology of self-incompatibility, which is the system of self-recognition controlled by the S-gene and related genes; and the cellular and molecular biology of pollen development and genetic dissection of male sterility. Some chapters feature Arabidopsis, with its unique genetic system. Reproduction is vital for seed production in crop plants, and this book presents new approaches to manipulate plant breeding systems for the 21st century.