gender Flashcards
the role of chromosome and hormones in sex and gender
23 pairs in humans containing genetic information, 23rd pair determine biological sex: XX for female XY for male.
the y chromosomes carries a gene called the sex determining region y or SRY, SRY gene causes testes to develop in an XY embryo.
these produce androgens: male sex hormones.
the role of hormones
most gender development comes from the influence of hormones.
hormones act upon brain development and cause development of reproductive organs.
a burst of hormonal activity trigger the development of secondary sexual characteristic
males and females produce same hormones but different concentrations
Hormones are chemical substances produced in the body that control and regulate the activity of certain cells or organs.
testosterone
male hormones
present in small quantities in women
controls development of male sex organs during foetal development
no sex hormones in foetal development= no peepee
if female produce high levels= male sex organs may appear
high levels of testosterone are also linked to aggression- adaptive
aggression- help mate with women
women tend to children= men more likely to take hunter role and success would be enhanced by aggressiveness
oestrogen
female hormone- determines female sexual characteristics and menstruation
cause heightened emotionality and irritability during menstrual cycle
oxytocin
women produce in larger amounts than men
giving birth- stimulates lactation
reduces the stress hormone cortisol and facilitates bonding
released in massive quantities during labour and after childbirth
men produce less of this hormone
men are less interested in intimacy and closeness within a relationship
evidence suggest that both produce oxytocin in roughly qual amounts during amorous activities,,, seggy time ig
evidence for testosterone
strength- role of sex hormones in gender development even in mature males
link between increased testosterone and sexual behaviour was confirmed in a study
male hypogonadism is condition caused by man’s testes failing to produce normal levels of the male sex hormones
227 hypogonadal men testosterone therapy for 180 days
changes in body shape muscle strength sexual functioning libido were monitored
improved all
testosterone exerts a powerful and direct influence on male sexual arousal and physical development in adulthood
counterpoint
other evidence is less convincing
double-blind placebo study
increased levels of testosterone levels in healthy men
no significant increase of sexual behaviour
no changes in aggression or anger levels
additional testosterone may have no effect on sexual or aggressive behaviour- doesn’t challenge the role in early development
social factors ignored
limitation- bio accounts ignore the role of social factors in gender-related behaviour
gender roles around the world= more of social norms than bio
notions of masculinity and feminity do with individualist or collectivist
individualist- more masc eg independence is important
UK, US traditional masc traits highly valued
challenges bio explanations of gender behaviour and suggest social factors are more important in shaping gender behaviour and attitudes
reductionist
limitation- bio explanations are reductionlist
accounts reduce gender to levels of chromosomes and hormones
ignore or downplay alt explanations
cog approach would draw attention to influence of thought processes eg schemas
changes in thought processes may be due to maturation of the developing brain not explained by bio model
psychodynamic would acknowledge maturation as a factor but also childhood experiences
gender is more complex than bio influences alone
pathologising gender
limitation- social sensitive and could cause issues with stereotypes of women in the workplace
conditions cause changes in sex hormones
PMS- some is very extreme changes
a diagnosis means person can access treatment on NHS to control the symptoms
however could be stereotypes of women’s experience and emotions
social construction > bio fact
encourages stereotypes of irrational women affecting how women are treated in society
men’s anger is explained as a result of external stress eg work not regarded the same
benefits of treatment may not justified because enhancing negative expectations about women damages their equal rights in work place
atypical sex chromones patterns
Any set of sex chromosome patterns that deviates from the usual XX/XY.
Klinefelter- XXY
turner-XO
klinefelter
1 in 600 bio males anatomical appearance of male 10% identified by prenatal diagnoses 2/3 not aware diagnosis accidentally via medical examinations for unrelated conditions
physical
klinefelter
reduce body hair
some breast development
softening or rounding body contours
long gangly limbs
underdeveloped geneitals
problems with coordination and clumsiness
susceptible to health problems more commonly found in women
psycho
klinefelter
poor developed language skills and reading ability
passive shy lack interest in sexual activity
not response well in stressful situations
exhibit problems with executive functions eg memory and problem solving
turner syndrome
1 in 5000
absence of 1 of the 2 x chromo
XO