RECOMMENDED AS ONE OF THE TIMES' BEST SCIENCE BOOKS OF 2021 'With all the talk about testosterone in sex, sports and politics, we need a good explanation of the science and its implications, and this one is outstanding.' STEVEN PINKER, bestselling author of The Blank Slate 'There are whole books written about the idea that behavioural sex differences are a societal construct and how a male hormone we know influences animal behaviour somehow doesn't influence us. Hooven's book is a riposte to that silliness - and also a defence of a hormone that isn't just about aggression.' TOM WHIPPLE, THE TIMES, BEST SCIENCE BOOKS OF 2021 'Fascinating, vital, unputdownable.' JULIE BINDEL 'The definitive book on testosterone . . . A brave and significant book . . . simply fascinating and filled with extraordinary facts.' EVENING STANDARD 'Testosterone does what all superb popular science must do: it entertains as it educates.' THE WALL STREET JOURNAL Through riveting personal stories and the latest research, Harvard evolutionary biologist Carole Hooven shows how testosterone drives the behaviour of the sexes apart and how understanding the science behind this hormone is empowering for all. The biological source of masculinity has inspired fascination, investigation and controversy since antiquity. From the eunuchs in the royal courts of ancient China to the booming market for 'elixirs' of youth in nineteenth-century Europe, humans have been obsessed with identifying and manipulating what we now know as testosterone. And the trend shows no signs of slowing down. Thanks to this history and the methods of modern science, today we have a rich body of research about testosterone's effects in both men and women. The science is clear: testosterone is a major, invisible player in our relationships, sex lives, athletic abilities, childhood play, gender transitions, parenting roles, violent crime, and so much more. But there is still a lot of pushback to the idea that it does, in fact, contribute to sex differences and significantly influence behaviour. Hooven argues that acknowledging testosterone as a potent force in society doesn't reinforce stifling gender norms or patriarchal values. Testosterone and evolution work together to produce a huge variety of human behaviour, and that includes a multitude of ways to be masculine and feminine. Understanding the science sheds light on how we work and relate to one another, how we express anger and love, and how we fight bias and problematic behaviour to build a fairer society. 'One of the most compelling books on human behaviour I've ever read. Testosterone is a scientific mystery story told with insight, intelligence and panache.' DANIEL GILBERT, Edgar Pierce Professor of Psychology, Harvard University, and author of Stumbling on Happiness 'Science writing at its best: intriguing, personal, bold, persuasive, and most importantly, transparent. Her gripping account will fascinate, whether you're a teenager in the throes of puberty or are just curious about the nature of sex and gender - one of the most important debates of our time.' RICHARD WRANGHAM, author of The Goodness Paradox 'A fascinating, brave, and brilliant book - the best I've read on the topic.' STEVE STEWART-WILLIAMS, author of The Ape that Understood the Universe 'A superb and engaging book that delivers the unfiltered truth about testosterone, sex and sex differences, told with clarity and compassion.' DANIEL E. LIEBERMAN, author of Exercised 'With wit and warmth, Hooven lucidly lays out a formidable scientific case for how and why the sexes are different. Boldly confronting contemporary gender issues, Testosterone speaks directly to why getting human nature right matters for making the world a better place.' JOE HENRICH, professor of Human Evolutionary Biology at Harvard University and author of The Secret of Our Success 'An approachable introduction to an often misunderstood aspect of human biology.' Publishers Weekly 'Carole Hooven's account ... is subtle, nuanced, and written with the sure touch of a natural storyteller ...Her commitment to science - to good science - is resolute.' LUKE SLATTERY, WEEKEND AUSTRALIAN 'It is a book I couldn't put down. Beautifully written and goes into excellent but largely understandable detail regarding scientific information.' Steph Richards, co-founder of Steph's Place UK, a trans-led human rights organisation

This book describes research on the emotional communication between parents and children and its effect on the children's emotional development. Inspired by the work, and dedicated to the memory of Dr. Haim Ginott, it presents the results of initial exploratory work with meta-emotion--feelings about feelings. The initial study of meta-emotion generated some theory and made it possible to propose a research agenda. Clearly replication is necessary, and experiments are needed to test the path analytic models which have been developed from the authors' correlational data. The authors hope that other researchers will find these ideas interesting and stimulating, and will inspire investigation in this exciting new area of a family's emotional life.

This book describes research on the emotional communication between parents and children and its effect on the children's emotional development. Inspired by the work, and dedicated to the memory of Dr. Haim Ginott, it presents the results of initial exploratory work with meta-emotion--feelings about feelings. The initial study of meta-emotion generated some theory and made it possible to propose a research agenda. Clearly replication is necessary, and experiments are needed to test the path analytic models which have been developed from the authors' correlational data. The authors hope that other researchers will find these ideas interesting and stimulating, and will inspire investigation in this exciting new area of a family's emotional life.

Since antiquity - from the eunuchs in the royal courts of ancient China to the booming market for "elixirs of youth" in nineteenth-century Europe - humans have understood that typically masculine behaviour depends on testicles, the main source of testosterone in males. Which sex has the highest rates of physical violence, hunger for status, and desire for a high number of sex partners? Just follow the testosterone. Although we humans can study and reflect on our own behaviour, we are also animals, the products of millions of years of evolution. Fascinating research on creatures from chimpanzees to spiny lizards shows how high testosterone helps males out-reproduce their competitors. And men are no exception. While most people agree that sex differences in human behaviour exist, they disagree about the reasons. But the science is clear: testosterone is a potent force in human society, driving the bodies and behaviour of the sexes apart. But, as Hooven shows in T, it does so in concert with genes and culture to produce a vast variety of male and female behaviour. And, crucially, the fact that many sex differences are grounded in biology provides no support for restrictive gender norms or patriarchal values. In understanding testosterone, we better understand ourselves and one another - and how we might build a fairer, safer society.