Gender - The Role of Genes and Hormones

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  • Created by: Tamsin
  • Created on: 13-04-14 20:06
Genes
23 pairs of chromosomes each, chromosomes contain genes that carry instructions, sex chromosomes determine an individuals sex
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hormones
influence development of genitalia and the brain
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brain development
different in males and females, girls better at social skills, differences caused by testosterone levels
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Swaab 1997
found the sexually dimorphic nucleus in the hypothalamus was 2 x the size in males
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Dabs et al 1995
found that violent offenders had higher testosterone levels than non violent offenders
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Coates et al 2008
found that financial traders with higher testosterone levels took greater risks
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Klaver et al
found that higher levels of oxytocin are linked to improved memory for faces, and women have higher levels suggesting they are more sociable
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Gorski et al 1985
injected female rats with testosterone for a period prior to birth. found that the sex hormones had both psychological and behavioural effects
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issues of Gorski animal experiment
can't extrapolate the findings to humans, as hormones in one species (the rats) may have different functions in another (humans)
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Klinefelters syndrome
XXY, biologically male but extra X chromosome. results in underdeveloped genitals, lack of body hair, poor language skills and a passive temperament
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Turners syndrome
XO, biologically female but missing X chromosome. results in short body, webbing at neck, poor spatial and mathematical skills
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hormones

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influence development of genitalia and the brain

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brain development

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Card 4

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Swaab 1997

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Card 5

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Dabs et al 1995

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