Search results for ""author del thiessen""

Bittersweet Destiny combines discourse on the evolution of human behavior with a philosophical perspective. It explores evolutionary theory aimed at determining human behavior. Del Thiessen presents this material against the broad background of everyday life, allowing the reader to see the theory of evolution as it has shaped his or her own behavior. However, he points out that when evolutionary theory is aimed at human behavior, the critics object, and controversy results.Thiessen argues that nothing in our lives makes sense unless we look at it through a biological lens. We can thereby understand our origin, our affiliation with all animals and plants, and our cultural destination. However, we can also discover a dark side to our destiny - our favoritism to those who share our own genes, our ability to deceive, and our capacity for abuse, rape, and murder. Good, bad, and indifferent, we serve the replication of our DNA. Critics extrapolate evolutionary theory to a wide range of animal species, and even human morphology and physiology, but when the same perspective is applied to human behavior there is strong dissent. What these critics fear, according to Thiessen, is that accepting evolutionary notions about human behavior strikes at the heart of free will, self-determination, and social equality.Bittersweet Destiny describes the heroic efforts of naturalists Charles Darwin and Alfred Wallace to unlock the secrets of evolution. It continues with a vivid description of our fossil history and our chance beginnings. From there the story implicates disease processes in evolution, highlights our rational and irrational nature, focuses on those characteristics of brain evolution and language that make us distinctive, and illustrates our most basic survival and reproductive mechanisms. Thiessen warns the reader that things are as they are no matter what we might wish; we ignore facts and controversy at our own risk. This book will be significant to anthropologists, psychologists, biologists, and sociologists.

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In this comprehensive account of olfactory communication and territorial behavior in the Mongolian gerbil, Del Thiessen and PaulineYahr provide the first detailed study of the neurological and physiological mechanisms that control these basic functions. In addition to explaining the links between hormones, genes, olfactory cues, and territorial acts, they also offer a more general picture of gerbil behavior, as well as a brief look at other mammalian species that communicate social status by way of olfactory messages. Territorial behavior, as defined by the authors, includes all acts that are restricted to a particular area and are crucial for successful reproduction. In the Mongolian gerbil, and probably in other mammals as well, territoriality is controlled by sex hormones acting on specific areas of the central nervous system. Hormones from the gonads apparently act in the brain by altering the genetic apparatus controlling biochemicals used in neural communication. Without these hormones, the animal is socially inert and unable to transmit genes to the next generation. The authors conclude from the results of over ten years of investigation that the most complex social interactions depend on the integrity of the hormone system and its constant tuning by olfactory stimuli. The book incorporates a review of all previously known studies of gerbil behavior and representative data for many other scent-marking species. A stereotaxic brain atlas for the gerbil is a feature that will be especially helpful to other researchers. The book's eclectic nature should make it valuable to anyone concerned with territorial behavior, hormones and behavior, or brain processes, as well as to those who are specifically interested in the Mongolian gerbil.

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