Stumbled across an excellent scientific series by "American Trans Man" on biological origins of gender, gendered behavior and play, testosterone, etc. Great source for arguing against a feminist claiming "gender is a social construct" fac1 October 21, 2018 15 upvotes /r/MensRights https://americantransman.com/2010/07/20/effects-of-testosterone-on-brain-masculinization-behavior-part-3-of-male-gender-identity-in-an-individual-with-complete-androgen-insensitivity/
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