In the past couple of decades, studies investigating the genetic background of psychiatric disorders have mushroomed. Research into the brain mechanisms and regions of the brain involved in certain dysfunctions have greatly improved our knowledge of the relationship between brain pathology and psychopathology. By contrast, we know far less about 'why' certain individuals remain vulnerable to psychiatric disease at all, and whether they were selected by evolutionary forces or simply by-products of other species-specific characteristics. This comprehensive book presents a new integrative approach to understanding psychopathological conditions - an approach that embraces cognition, emotion, behaviour, and their nature-nurture interactions. Central to this approach is the introduction of human evolution into the psychiatric model - psychiatrists need to know why the human mind and brain evolved in the way it did. In three parts, the book presents a comprehensive account of human brain evolution in terms of physical features and function, showing how these relate to our current understanding of psychopathology. Accessibly written, the book shows how a consideration of evolutionary factors in psychiatry can improve our understanding and treatment of specific disorders such as suicidal behaviour, anorexia, and depression.

Evolutionary psychiatry attempts to explain and examine the development and prevalence of psychiatric disorders through the lens of evolutionary and adaptationist theories. In this edited volume, leading international evolutionary scholars present a variety of Darwinian perspectives that will encourage readers to consider 'why' as well as 'how' mental disorders arise. Using insights from comparative animal evolution, ethology, anthropology, culture, philosophy and other humanities, evolutionary thinking helps us to re-evaluate psychiatric epidemiology, genetics, biochemistry and psychology. It seeks explanations for persistent heritable traits shaped by selection and other evolutionary processes, and reviews traits and disorders using phylogenetic history and insights from the neurosciences as well as the effects of the modern environment. By bridging the gap between social and biological approaches to psychiatry, and encouraging bringing the evolutionary perspective into mainstream psychiatry, this book will help to inspire new avenues of research into the causation and treatment of mental disorders.

Mental disorders arise from neural and psychological mechanisms that have been built and shaped by natural selection across our evolutionary history. Looking at psychopathology through the lens of evolution is the only way to understand the deeper nature of mental disorders and turn a mass of behavioral, genetic, and neurobiological findings into a coherent, theoretically grounded discipline. The rise of evolutionary psychopathology is part of an exciting scientific movement in psychology and medicine -- a movement that is fundamentally transforming the way we think about health and disease. Evolutionary Psychopathology takes steps toward a unified approach to psychopathology, using the concepts of life history theory -- a biological account of how individual differences in development, physiology and behavior arise from tradeoffs in survival and reproduction -- to build an integrative framework for mental disorders. This book reviews existing evolutionary models of specific conditions and connects them in a broader perspective, with the goal of explaining the large-scale patterns of risk and comorbidity that characterize psychopathology. Using the life history framework allows for a seamless integration of mental disorders with normative individual differences in personality and cognition, and offers new conceptual tools for the analysis of developmental, genetic, and neurobiological data. The concepts presented in Evolutionary Psychopathology are used to derive a new taxonomy of mental disorders, the Fast-Slow-Defense (FSD) model. The FSD model is the first classification system explicitly based on evolutionary concepts, a biologically grounded alternative to transdiagnostic models. The book reviews a wide range of common mental disorders, discusses their classification in the FSD model, and identifies functional subtypes within existing diagnostic categories.

What are the origins of human psychopathology? Is mental illness a relatively recent phenomenon, or has it been with us throughout evolution? In Origins of Psychopathology, Horacio Fárega Jr. employs principles of evolutionary biology to better understand the significance of mental illness. He explores whether what psychiatry has categorized as mental disorders could have existed during earlier phases of human evolution. Fábrega approaches the prominent features of mental disorders as adaptive responses to the environment and life's circumstances, which in turn can only be understood in the context of our evolutionary past. Taking his cue from theoretical issues raised by research into primate behavior and early hominid evolution, he poses the question: What, if any, aspects of mental illness are rooted in our evolution? Does mental illness occur in primates and other animals, and if so, what does this tell us about mental illness in human evolution? How has mental illness played an adaptive role? How has the development of language and higher cognitive functions affected characteristics of psychopathology? Fábrega synthesizes insights from both the clinical and the evolutionary points of view. This facet of psychopathology, which involves its origins and manifestations viewed across the expanse of human evolution, has, until now, been largely neglected in psychiatric education, theory, and practice.

This book is unique in taking an evolutionary perspective to understanding psychiatric and psychosomatic conditions. It explores how the human brain/mind has been shaped by natural and sexual selection and why adaptations to environmental conditions in our evolutionary past may not always work in our best interests.

Why do so many people suffer the slings and arrows of outrageous angst? Some twenty percent of us are afflicted with common Anxiety and Depressive disorders. That's not just nervous or scared or sad - that is painful dysfunction without obvious benefit. A new theoretical synthesis suggests that while animals share a set of evolved social instincts, we humans experience commonplace Anxiety and Depressive disorders when we use our reason to defy that biology.