Cordelia Fine's 'Testosterone Rex' challenges the notion that biological sex is a fundamental, diverging force in human development. She argues that differences between the sexes are not solely shaped by evolutionary pressures and hormones like testosterone. Instead, she uses research from evolutionary science, psychology, neuroscience, and endocrinology to debunk myths about sex roles and calls for a more equal society based on the full potential of both sexes.
Fine critiques evolutionary psychology by dismantling the idea that men and women have evolved to be inherently different due to biological factors like testosterone. She argues that the assumptions about men being more competitive and risk-taking, and women being more nurturing, are oversimplified and not supported by robust scientific evidence. Fine highlights the complexity and diversity in sexual selection and behavior across species, challenging the traditional narrative.
Bateman's Principle, proposed by geneticist Angus Bateman, suggests that males have greater reproductive variance and benefit more from multiple mates, while females do not. Fine critiques this principle by pointing out flaws in the original study, such as methodological errors and biases that overestimated male reproductive success. She also highlights that female promiscuity and competition are more common in the animal kingdom than previously thought, challenging the simplistic view of sexual selection.
Fine argues that sex is a complex system involving genetics, hormones, and environmental factors, rather than a simple binary category. She emphasizes that sex differences in traits like brain development and behavior are not fixed but are influenced by interactions with the environment. This perspective challenges the traditional view of sex as strictly male or female, highlighting the diversity and fluidity in biological and social aspects of sex.
Fine argues that the role of testosterone in shaping behavior has been overstated. She critiques the idea that testosterone is the primary driver of masculine traits like aggression and risk-taking. Through various studies, including those on individuals with differences in sexual development, Fine shows that the links between testosterone and behavior are not as clear-cut as often assumed. She emphasizes the importance of environmental and social factors in shaping behavior, rather than attributing it solely to hormones.
Fine explains the persistence of gender roles through the concept of gender socialization, where individuals internalize societal norms about masculinity and femininity. She argues that these roles are not solely determined by biology but are reinforced through cultural practices and social learning. Fine also highlights the flexibility and diversity of gender roles across different societies and historical periods, challenging the idea that they are biologically fixed.
Many people believe that, at its core, biological sex is a fundamental, diverging force in human development. According to this overly familiar story, differences between the sexes are shaped by past evolutionary pressures―women are more cautious and parenting-focused, while men seek status to attract more mates. In each succeeding generation, sex hormones and male and female brains are thought to continue to reinforce these unbreachable distinctions, making for entrenched inequalities in modern society.
In Testosterone Rex: Myths of Sex, Science, and Society)* *(Norton, 2018), psychologist Cordelia Fine wittily explains why past and present sex roles are only serving suggestions for the future, revealing a much more dynamic situation through an entertaining and well-documented exploration of the latest research that draws on evolutionary science, psychology, neuroscience, endocrinology, and philosophy. She uses stories from daily life, scientific research, and common sense to break through the din of cultural assumptions. Testosterone, for instance, is not the potent hormonal essence of masculinity; the presumed, built-in preferences of each sex, from toys to financial risk taking, are turned on their heads.
Moving beyond the old “nature versus nurture” debates, Testosterone Rex disproves ingrained myths and calls for a more equal society based on both sexes’ full, human potential.
Cordelia Fine is a Canadian-born British philosopher of science, psychologist, and writer. She is a full professor in the History and Philosophy of Science programme at the University of Melbourne, Australia.
Morteza Hajizadeh)* is a Ph.D. graduate in English from the University of Auckland in New Zealand. His research interests are Cultural Studies; Critical Theory; Environmental History; Medieval (Intellectual) History; Gothic Studies; 18th and 19th Century British Literature. YouTube channel). Twitter).*
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