Atypical gender development Flashcards
what is gender dysphoria
when a person’s biological sex doesn’t match with the gender they feel they are
what is the consequence of gender dysphoria
causes stress and discomfort, as listed in the DSM-5
what’re the main theories of the biological explanation for atypical gender development
brain sex theory
genetic factors
what is brain sex theory
gender dysphoria is caused by specific brain areas they’re incompatible with a persons biological sex.
especially true in dimorphic brain areas
what is a dimorphic brain area
an area in the brain that is different in males and females
what is research into dimorphic areas
- studied the BST (bed nucleus of the stria terminalis) typically 40% larger in typical males than females and is fully developed by 5y/o
- looked at 6 male-to-female individuals and found their BST was the size of a biological female (40% smaller)
what was alternative research into the BST
- focused on the number of neurons rather than the size
- found that the 6 male-female trans individuals had a neuron density the same as that of a typical biological female
- suggests the origins of GID/GD to have a biological basis, within the dimorphic brain areas
what is earlier evidence into GID’s genetic basis
- Coolidge assessed 157 twin pairs (96MZ 61DZ) for evidence of GID
- found that 62% of the variance could be accounted for by genetic factors (38% environmental) - suggesting a strong heritable component to gender dysphoria
what is later evidence into the origins of GID
- Hayden’s compared 23MZ twins with 21DZ twins where one of each pair had been diagnosed with GD
- found 39% of MZ twins were concordant for GD compared to 0% of the DZ twins
- suggests a strong heritable component to gender dysphoria
whatre the evaluations for the biological explanation of GD
- BST size change measurement errors
+ white matter
how is the BST size change measurement error a limitation of the biological explanation of GD
- may be that BST doesn’t cause GD
- in studies by Zhou and Kruijver the brain was scanned post-mortem, after the hormone therapy, unable to tell if the size change pre-existed
- other studies used MRI scans whilst individuals took hormone treatments and found that the treatment changed the BST size significantly
- limitation as it suggests that BST differences may have been an effect of hormone therapy, rather than the GD cause
how is white matter a strength of the biological explanation of GD
- other brain areas may be associated with GD
- Rametti studied white matter (/‘other dimorphic area), analysing both male and female transgender individuals before hormone treatment
- found that mostly the amount/distribution of white matter corresponded with the gender the individuals identified as (not bio sex)
- strength as it suggests that there are early differences in the brains of transgender individuals
what’re 2 social explanations for GD
social constructionism
psychoanalytic theory
what is social construction
- argues that gender concepts are ‘invented’ by societies
- explains GD as ‘confusion’ arises because society forces people to be either a man or a woman - must pick a side to act accordingly
- means that GD is neither biological in origin nor should it be a pathological condition, it occurs due to the forcing of society
what was McClintock’s study supporting social constructionism into he case of kwolu-aatmwol
- studies individuals in the Sambia of New Guinea, causing some biological males to be categorised as girls at birth
- testosterone causes the testes to descend and the clitoris enlarges into a penis
- common in Sambia, routinely accepted that some people are men, some women, and others kwolu-aatmwol (females-then-males)