Darwin famously described special difficulties in explaining social evolution in insects. More than a century later, the evolution of sociality - defined broadly as cooperative group living - remains one of the most intriguing problems in biology. Providing a unique perspective on the study of social evolution, this volume synthesizes the features of animal social life across the principle taxonomic groups in which sociality has evolved. The chapters explore sociality in a range of species, from ants to primates, highlighting key natural and life history data and providing a comparative view across animal societies. In establishing a single framework for a common, trait-based approach towards social synthesis, this volume will enable graduate students and investigators new to the field to systematically compare taxonomic groups and reinvigorate comparative approaches to studying animal social evolution.

Over the last several decades, mathematical models have become central to the study of social evolution, both in biology and the social sciences. But students in these disciplines often seriously lack the tools to understand them. A primer on behavioral modeling that includes both mathematics and evolutionary theory, Mathematical Models of Social Evolution aims to make the student and professional researcher in biology and the social sciences fully conversant in the language of the field. Teaching biological concepts from which models can be developed, Richard McElreath and Robert Boyd introduce readers to many of the typical mathematical tools that are used to analyze evolutionary models and end each chapter with a set of problems that draw upon these techniques. Mathematical Models of Social Evolution equips behaviorists and evolutionary biologists with the mathematical knowledge to truly understand the models on which their research depends. Ultimately, McElreath and Boyd’s goal is to impart the fundamental concepts that underlie modern biological understandings of the evolution of behavior so that readers will be able to more fully appreciate journal articles and scientific literature, and start building models of their own.

The national governments of Central America were constructed between 1840 and 1900, a time when coffee was transformed from a botanical curiosity to the region's most important export. In spite of their geographic proximity, the national governments that

Richard D. Alexander is an accomplished entomologist who turned his attention to solving some of the most perplexing problems associated with the evolution of human social systems. Using impeccable Darwinian logic and elaborating, extending and adding to the classic theoretical contributions of pioneers of behavioral and evolutionary ecology like George Williams, William Hamilton and Robert Trivers, Alexander developed the most detailed and comprehensive vision of human social evolution of his era. His ideas and hypotheses have inspired countless biologists, anthropologists, psychologists and other social scientists to explore the evolution of human social behavior in ever greater detail, and many of his seminal ideas have stood the test of time and come to be pillars of our understanding of human social evolution. This volume presents classic papers or chapters by Dr. Alexander, each focused on an important theme from his work. Introductions by Dr. Alexander's former students and colleagues highlight the importance of his work to the field, describe more recent work on the topic, and discuss current issues of contention and interest.

Tang provides a coherent and systematic exploration of social evolution as a phenomenon and as a paradigm. He critically builds on existing discussions on social evolution, while drawing from a wide range of disciplines, including archaeology, evolutionary anthropology, sociology, economics, political science, the philosophy of social sciences, and evolutionary biology. Clarifying the relationship between biological evolution and social evolution, Tang lays bare the ontological and epistemological principles of the social evolutionary paradigm. He also presents operational principles and tools for deploying this paradigm to understand empirical puzzles about human society. This is a vital resource for students, practitioners, and philosophers of all social sciences.