What is responsible for the differences between the sexes in so many animals, from the brilliant plumage of birds of paradise to the antlers on deer? And why are the traits that distinguish the sexes sometimes apparently detrimental to survival? Even when they look more or less alike, why do males and females sometimes behave differently? Questions like these have intrigued scientists and the public alike for many years, and new discoveries are showing us both how wildly variable the natural world is, and how some basic principles can help explain much of that variation. Like natural selection, sexual selection is a process that results from differential representation of genes in successive generations. Under sexual selection, however, the crucial characteristics that determine whether an individual reproduces depend on sexual competition, rather than survival ability. This Very Short Introduction considers the history of our understanding of sexual selection, from Darwin's key insights to the modern day. Considering the investment animals place on reproduction, variation in mating systems, sexual conflict, and the origin of sexual dimorphism, Marlene Zuk and Leigh Simmons discuss questions such as whether females can really choose between males on aesthetic grounds, and how sexual conflict is resolved in different species. They conclude with a consideration of the thorny question of how, and even if, sexual selection theory applies to humans. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.
Bridging Cultures in Early Care and Education: A Training Module is a resource designed to help pre-service and in-service early childhood educators, including infant-toddler caregivers, understand the role of culture in their programs. It is also intended for professionals who work with children and their families in a variety of other roles, such as social workers, special educators, and early interventionists, and for use in college courses focused on early childhood education and child development. The module explains and illustrates how early childhood educators can use the organizing concepts of individualism and collectivism as a means of understanding cultural conflict and difference. These concepts have been shown to be highly useful in improving home-school understanding across cultures. Based on real-life examples of cultural dilemmas in early care and education settings, participants engage the concepts of individualism and collectivism to solve a variety of scenarios in a dynamic and engaging manner. *Chapter 1 introduces the Bridging Cultures for Early Care and Education approach, provides a brief history, and explains the training module. It presents the conceptual framework of individualism and collectivism, which is at the heart of the training. *Chapter 2 provides the information needed for a two-hour workshop, including a script and notes to the facilitator. The script is not meant to be read word for word. Rather, it is offered as a guide, based on a pilot-tested approach. Appendices at the end of the book contain transparency masters for the overheads referenced in the script, and masters for suggested handouts. *Chapter 3 offers ideas for augmenting the basic two-hour training by expanding it over a longer time period. It also identifies additional diversity resources that can complement the Bridging Cultures training. *Appendices providing additional information, data, and bibliographic resources are included. This module originated as part of the Bridging Cultures Project at WestEd--a nonprofit research, development, and service agency working with education and other communities to promote excellence, achieve equity, and improve learning for children, youth, and adults.
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