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
physical
turner
dont have menstrual cycles ovaries dont develop- infertile don't develop breasts broad shield chest low set ears webbed neck high waist to hip ratio hip not bigger than waist physically immature and tend to retain appearance of prepubescent girls
psycho
turner
higher than avg reading ability
performance on spatial visual memory and maths lower than avg
immature appearance- tend to be socially immature
trouble relating to peers and experience difficulty fitting in
nature-nurture debate
strength- research into atypical sex chromo contributes to nature nurture debate
comparing typical and atypical- possible to see psycho and behavioural differences between them
logically inferred these differences have a bio basis
direct result of abnormal chromo structure
support the view that innate nature influences have a powerful effect on psycho and behaviour
counter
issues in leaping to conc
relationship between atypical chromo and differences in behaviour is not causal
environmental and social influences more responsible for behavioural differences observed
eg social immaturity- bc they’ve been treated immaturely by people
prepubescent appearance= encourages immature behaviour
indirect impact on performance in school
specific learning and developmental problems identified
wrong to assume that psychological and behavioural differences in people with atypical sex chromo patterns are due to nature
real-world application
strength- application to managing the syndromes
research in atypical sex chromo lead to earlier and more accurate diagnoses of turner and klinefelter and more positive outcomes
87 ppt with kline identified and treated at a young age experience benefits in management compared to those diagnoses in adulthood
increase awareness of atypical chromosome patterns does have a useful real-world application
sampling issues
limitation- description of Klinefelter may be a sampling issue
to identify the characteristics of XXY and XO it is necessary to identify a large number of individuals with the disorder and build a database
we can see the full range of characteristics from mild to severe
if only the severe symptoms are identified the picture of typical symptoms may be distorted
protective studies- more accurate pic of characteristics
many with kline don’t experience significant cog or psycho issues and many are highly successful academically, personal lives and careers
suggest that the typical picture of kline and turner may be exaggerated.
knowing or not knowing
strength- benefits of knowing may outweigh the potentially neg effects on self concept
many people with kline or turner are unaware this may be good as it avoids self-fulling prophecy
early diagnosis may have a significant effect on a child self concept eg child with kline might expect to have difficulty with language comprehension and reduce motivation in school
however, early knowledge of the syndrome may help a person understand why they appear and act differently from others
means child doesn’t feel at fault- less likely to blame themselves
early access to med and psycho support
helps parents plan for the future
benefits of knowing may outweigh the potentially neg effects on self concept
Kohlberg theory
stages of development
Child’s understanding of gender becomes more sophisticated with age, progressing through three stages.
not linked with experience but the result of biological maturation
stage to stage gradual
three stages
stage 1- gender identity
Around age 2 years. Child recognises that they are a boy or a girl and labels others as such.
view gender as not fixed