"Carolyn is in a wheelchair, but she doesn't let that stop her! She can do almost everything the other kids can, even if sometimes she has to do it a little differently"--

Ever since Darwin, animal behavior has intrigued and perplexed human observers. The elaborate mating rituals, lavish decorative displays, complex songs, calls, dances and many other forms of animal signaling raise fascinating questions. To what degree can animals communicate within their own species and even between species? What evolutionary purpose do such communications serve? Perhaps most importantly, what can animal signaling tell us about our own non-verbal forms of communication? In The Handicap Principle, Amotz and Ashivag Zahavi offer a unifying theory that brilliantly explains many previously baffling aspects of animal signaling and holds up a mirror in which ordinary human behaviors take on surprising new significance. The wide-ranging implications of the Zahavis' new theory make it arguably the most important advance in animal behavior in decades. Based on 20 years of painstaking observation, the Handicap Principle illuminates an astonishing variety of signaling behaviors in animals ranging from ants and ameba to peacocks and gazelles. Essentially, the theory asserts that for animal signals to be effective they must be reliable, and to be reliable they must impose a cost, or handicap, on the signaler. When a gazelle sights a wolf, for instance, and jumps high into the air several times before fleeing, it is signaling, in a reliable way, that it is in tip-top condition, easily able to outrun the wolf. (A human parallel occurs in children's games of tag, where faster children will often taunt their pursuer before running). By momentarily handicapping itself--expending precious time and energy in this display--the gazelle underscores the truthfulness of its signal. Such signaling, the authors suggest, serves the interests of both predator and prey, sparing each the exhaustion of a pointless chase. Similarly, the enormous cost a peacock incurs by carrying its elaborate and weighty tail-feathers, which interfere with food gathering, reliably communicates its value as a mate able to provide for its offspring. Perhaps the book's most important application of the Handicap Principle is to the evolutionary enigma of animal altruism. The authors convincingly demonstrate that when an animal acts altruistically, it handicaps itself--assumes a risk or endures a sacrifice--not primarily to benefit its kin or social group but to increase its own prestige within the group and thus signal its status as a partner or rival. Finally, the Zahavis' show how many forms of non-verbal communication among humans can also be explained by the Handicap Principle. Indeed, the authors suggest that non-verbal signals--tones of voice, facial expressions, body postures--are quite often more reliable indicators of our intentions than is language. Elegantly written, exhaustively researched, and consistently enlivened by equal measures of insight and example, The Handicap Principle illuminates virtually every kind of animal communication. It not only allows us to hear what animals are saying to each other--and to understand why they are saying it--but also to see the enormously important role non-verbal behavior plays in human communication.

Ever since Darwin, animal behavior has intrigued and perplexed human observers. The elaborate mating rituals, lavish decorative displays, complex songs, calls, dances and many other forms of animal signaling raise fascinating questions. To what degree can animals communicate within their own species and even between species? What evolutionary purpose do such communications serve? Perhaps most importantly, what can animal signaling tell us about our own non-verbal forms of communication? In The Handicap Principle, Amotz and Ashivag Zahavi offer a unifying theory that brilliantly explains many previously baffling aspects of animal signaling and holds up a mirror in which ordinary human behaviors take on surprising new significance. The wide-ranging implications of the Zahavis' new theory make it arguably the most important advance in animal behavior in decades. Based on 20 years of painstaking observation, the Handicap Principle illuminates an astonishing variety of signaling behaviors in animals ranging from ants and ameba to peacocks and gazelles. Essentially, the theory asserts that for animal signals to be effective they must be reliable, and to be reliable they must impose a cost, or handicap, on the signaler. When a gazelle sights a wolf, for instance, and jumps high into the air several times before fleeing, it is signaling, in a reliable way, that it is in tip-top condition, easily able to outrun the wolf. (A human parallel occurs in children's games of tag, where faster children will often taunt their pursuer before running). By momentarily handicapping itself--expending precious time and energy in this display--the gazelle underscores the truthfulness of its signal. Such signaling, the authors suggest, serves the interests of both predator and prey, sparing each the exhaustion of a pointless chase. Similarly, the enormous cost a peacock incurs by carrying its elaborate and weighty tail-feathers, which interfere with food gathering, reliably communicates its value as a mate able to provide for its offspring. Perhaps the book's most important application of the Handicap Principle is to the evolutionary enigma of animal altruism. The authors convincingly demonstrate that when an animal acts altruistically, it handicaps itself--assumes a risk or endures a sacrifice--not primarily to benefit its kin or social group but to increase its own prestige within the group and thus signal its status as a partner or rival. Finally, the Zahavis' show how many forms of non-verbal communication among humans can also be explained by the Handicap Principle. Indeed, the authors suggest that non-verbal signals--tones of voice, facial expressions, body postures--are quite often more reliable indicators of our intentions than is language. Elegantly written, exhaustively researched, and consistently enlivened by equal measures of insight and example, The Handicap Principle illuminates virtually every kind of animal communication. It not only allows us to hear what animals are saying to each other--and to understand why they are saying it--but also to see the enormously important role non-verbal behavior plays in human communication.

A Publishers Weekly Best Book of the Year for Nonfiction "...an essential and engaging look at recent disability history."— Buzzfeed One of the most influential disability rights activists in US history tells her personal story of fighting for the right to receive an education, have a job, and just be human. A story of fighting to belong in a world that wasn’t built for all of us and of one woman’s activism—from the streets of Brooklyn and San Francisco to inside the halls of Washington—Being Heumann recounts Judy Heumann’s lifelong battle to achieve respect, acceptance, and inclusion in society. Paralyzed from polio at eighteen months, Judy’s struggle for equality began early in life. From fighting to attend grade school after being described as a “fire hazard” to later winning a lawsuit against the New York City school system for denying her a teacher’s license because of her paralysis, Judy’s actions set a precedent that fundamentally improved rights for disabled people. As a young woman, Judy rolled her wheelchair through the doors of the US Department of Health, Education, and Welfare in San Francisco as a leader of the Section 504 Sit-In, the longest takeover of a governmental building in US history. Working with a community of over 150 disabled activists and allies, Judy successfully pressured the Carter administration to implement protections for disabled peoples’ rights, sparking a national movement and leading to the creation of the Americans with Disabilities Act. Candid, intimate, and irreverent, Judy Heumann’s memoir about resistance to exclusion invites readers to imagine and make real a world in which we all belong.

An approachable guide to being a thoughtful, informed ally to disabled people, with actionable steps for what to say and do (and what not to do) and how you can help make the world a more inclusive place ONE OF THE BEST BOOKS OF THE YEAR: NPR, Booklist • “A candid, accessible cheat sheet for anyone who wants to thoughtfully join the conversation . . . Emily makes the intimidating approachable and the complicated clear.”—Rebekah Taussig, author of Sitting Pretty: The View from My Ordinary, Resilient, Disabled Body People with disabilities are the world’s largest minority, an estimated 15 percent of the global population. But many of us—disabled and nondisabled alike—don’t know how to act, what to say, or how to be an ally to the disability community. Demystifying Disability is a friendly handbook on the important disability issues you need to know about, including: • How to appropriately think, talk, and ask about disability • Recognizing and avoiding ableism (discrimination toward disabled people) • Practicing good disability etiquette • Ensuring accessibility becomes your standard practice, from everyday communication to planning special events • Appreciating disability history and identity • Identifying and speaking up about disability stereotypes in media Authored by celebrated disability rights advocate, speaker, and writer Emily Ladau, this practical, intersectional guide offers all readers a welcoming place to understand disability as part of the human experience. Praise for Demystifying Disability “Whether you have a disability, or you are non-disabled, Demystifying Disability is a MUST READ. Emily Ladau is a wise spirit who thinks deeply and writes exquisitely.”—Judy Heumann, international disability rights advocate and author of Being Heumann “Emily Ladau has done her homework, and Demystifying Disability is her candid, accessible cheat sheet for anyone who wants to thoughtfully join the conversation. A teacher who makes you forget you’re learning, Emily makes the intimidating approachable and the complicated clear. This book is a generous and needed gift.”—Rebekah Taussig, author of Sitting Pretty: The View from My Ordinary Resilient Disabled Body