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Men who treat women equally are judged to be hostile to women

https://uwspace.uwaterloo.ca/items/205ad682-63e6-484a-825c-7b11a7b2ba14 The low benevolent sexism male target was judged to be higher on hostile sexism, less supportive of female professionals, less good of father and husband, and more likely to perpetrate domestic violence. Abstract Although there is a reliably positive association between hostile (HS) and benevolent sexism (BS), lay perceptions of this association have not been directly tested. I predicted that people perceive an illusory negative association between men’s HS and BS attitudes because lay theories expect men to have univalent attitudes toward women. In Study 1, I manipulated the target’s gender and responses on a subscale of the Ambivalent Sexism Inventory (high HS, low HS, high BS, or low BS). The low BS male target (compared to high BS male target) was judged to be higher on HS, less supportive of female professionals, less good of father and husband, and more likely to perpetrate domestic violence. Ratings of the l...
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Archer - Cross-cultural differences in physical aggression between partners: a social-role analysis

 https://pubmed.ncbi.nlm.nih.gov/16768651/ Cross-cultural differences in physical aggression between partners: a social-role analysis Abstract In developed western nations, both sexes commit acts of physical aggression against their partners. Data from 16 nations showed that this pattern did not generalize to all nations. The magnitude and direction of the sex difference was highly correlated with national-level variations in gender empowerment and individualism-collectivism. As gender equality and individualism increased, the sex difference in partner violence moved in the direction of lesser female victimization and greater male victimization. A second analysis of 52 nations showed that 3 indexes of women's victimization were also inversely correlated with gender equality and individualism. Sexist attitudes and relative approval of wife beating were also associated with women's victimization rates, but general levels of violent crime were not. The findings are discussed in te...
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Trans neurobiology links

  Brain Sex in Transgender Women Is Shifted towards Gender Identity (also contains many references to differentiation in brains between sexes) https://pmc.ncbi.nlm.nih.gov/articles/PMC8955456/ Is there something unique about the transgender brain? https://www.scientificamerican.com/article/is-there-something-unique-about-the-transgender-brain/ Neurotransmitter size sex dimorphism, Sapolsky ( The bed nucleus of the stria terminalis (BNST) is a brain region that shows sex differences and has been found to be relevant in the study of transgender individuals. Specifically, research suggests that the size and neuron count in the central subdivision of the BNST (BSTc) in male-to-female (MtF) transsexuals is more similar to that of cisgender women. This finding has been interpreted as evidence that gender identity may be related to brain development influenced by prenatal sex ). Phantom penile sensation on penis removal does not occur in trans women, but does ...
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How Men and Women's brains are different - Stanford

https://stanmed.stanford.edu/how-mens-and-womens-brains-are-different/ "  There was too much data pointing to the biological basis of sex-based cognitive differences to ignore, Halpern says. For one thing, the animal-research findings resonated with sex-based differences ascribed to people. These findings continue to accrue. In a study of 34 rhesus monkeys, for example, males strongly preferred toys with wheels over plush toys, whereas females found plush toys likable. It would be tough to argue that the monkeys’ parents bought them sex-typed toys or that simian society encourages its male offspring to play more with trucks. A much more recent study established that boys and girls 9 to 17 months old — an age when children show few if any signs of recognizing either their own or other children’s sex — nonetheless show marked differences in their preference for stereotypically male versus stereotypically female toys."
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Neurobiology of gender identity and sexual orientation

Pub Med Central   The empirical basis for hypothesising that gonadal hormones influence gender identity and sexual orientation is based on animal experiments involving manipulations of hormones during prenatal and early neonatal development. It is accepted dogma that testes develop from the embryonic gonad under the influence of a cascade of genes that begins with the expression of the sex-determining gene  SRY  on the Y chromosome. 4 , 5  Before this time, the embryonic gonad is “indifferent”, meaning that it has the potential to develop into either a testis or an ovary. Likewise, the early embryo has 2 systems of ducts associated with urogenital differentiation, Wolffian and Müllerian ducts, which are capable of developing into the male and female tubular reproductive tracts, respectively. Once the testes develop, they begin producing 2 hormones, testosterone and anti-Müllerian hormone (AMH). In rats, this occurs around day 16–17 of gestation, whereas, in humans, i...
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Psychology Today - sex differences

https://www.psychologytoday.com/gb/articles/201711/the-truth-about-sex-differences
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Coercive control

https://www.jstor.org/stable/2787019?seq=1 "This research examines gender as status, and gender and control (which share the meaning of dominance) as identities by analyzing negative and positive behavior of married couples whose task is to resolve disagreements in their marriage.  On the basis of recent extensions of expectation states theory dealing with emotion-based behavior, we hypothesize that husbands will be more likely than wives to use negative behavior in conversation. On the basis of identity theory and the meanings of emotion-based behavior, we also hypothesize that those with a more masculine and more dominant control identity will be moe likely to use negative behavior in interaction, and that those with a more feminine and less dominant control identity will be more likely to use positive behavior.  We test these predictions on a representative sample of newly married couples, using videotaped conversations. Although the results are consistent with predic...
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