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  2. Boy or girl paradox - Wikipedia

    en.wikipedia.org/wiki/Boy_or_Girl_paradox

    The chance the family consists of a boy and a girl is ⁠ 14 / 27 ⁠, about 0.52. This variant of the boy and girl problem is discussed on many internet blogs and is the subject of a paper by Ruma Falk. [13] The moral of the story is that these probabilities do not just depend on the known information, but on how that information was obtained.

  3. Shettles method - Wikipedia

    en.wikipedia.org/wiki/Shettles_Method

    The Shettles Method is a child conception idea that is reputed to help determine a baby's sex. It was developed by Landrum B. Shettles in the 1960s and was publicized in the book How to Choose the Sex of Your Baby, coauthored by Shettles and David Rorvik.

  4. Sex selection - Wikipedia

    en.wikipedia.org/wiki/Sex_selection

    World map of birth sex ratios, 2012 The one child policy in China has contributed to the imbalanced sex ratios. Image shows a community bulletin board in Nonguang Village, Sichuan province, China, keeping track of the town's female population, listing recent births by name and noting that several thousand yuan of fines for unauthorized births remain unpaid from the previous year.

  5. "Girl math" vs. "boy math": Math teachers weigh in on the ...

    www.aol.com/girl-math-vs-boy-math-193000997.html

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  6. Childhood gender nonconformity - Wikipedia

    en.wikipedia.org/wiki/Childhood_gender_nonconformity

    The concept of childhood gender nonconformity assumes that there is a correct way to be a girl or a boy. There are a number of social and developmental perspectives that explore how children come to identify with a particular gender and engage in activities that are associated with this gender role.

  7. Neuroscience of sex differences - Wikipedia

    en.wikipedia.org/wiki/Neuroscience_of_sex...

    The gender difference in spatial ability was found to be attributed to morphological differences between male and female brains. The parietal lobe is a part of the brain that is recognized to be involved in spatial ability, especially in 2d- and 3d mental rotation.

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