Biological Explanations for Gender Identity Disorder
- Created by: jessmccamley
- Created on: 12-06-18 20:29
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- Biological explanations of GID
- Genes
- Hare et al.
- Looked at the DNA of 112 MtF trans women, finding that they were more likely to have the angrogen receptor gene - the gene that codes for the increased uptake of testosterone - than controls
- The abnormality led to a decrease in the re-uptake of testosterone
- Looked at the DNA of 112 MtF trans women, finding that they were more likely to have the angrogen receptor gene - the gene that codes for the increased uptake of testosterone - than controls
- AO3
- Social Sensitivity
- The discovery of such a gene can lead to screening and therefore the erasure of trans people prior to birth
- Reductionism
- Reduces GID to genetic factors, ignoring the influence of environmental factors
- Correlation not causation
- The study by Hare finds a correlation (without a coefficient of 1) and attempts to claim causation, which is incorrect.
- Social Sensitivity
- Heylens
- In MZ twins there was a 39% concordance rate in the presence of GID compared with 0% in DZ twins
- Not 100% concordance
- In MZ twins there was a 39% concordance rate in the presence of GID compared with 0% in DZ twins
- Hare et al.
- Brain-Sex Theory
- Zhou et al.
- Found that the mass of the BSTc (typically 40% larger in men) in MtF trans was significantly smaller - similar to a woman
- BSTc - Bed Nucleus of the Stria Terminalis
- Found that the mass of the BSTc (typically 40% larger in men) in MtF trans was significantly smaller - similar to a woman
- Kruijiver et al.
- Found that in 6 trans people, the number of neurones in the BSTc matched the average of the reverse sex found in cisgendered controls.
- Small sample - cannot be generalised
- Found that in 6 trans people, the number of neurones in the BSTc matched the average of the reverse sex found in cisgendered controls.
- Zhou et al.
- Environmental Toxicity
- DDT
- DDT (the pesticide from the 70s) contained oestrogens and there is a theory that when airbourne, this leads to improper development in the womb
- Vruegdenhill
- Boys born to mothers who had been exposed to dioxins (toxic chemical compounds) showed feminised play styles.
- Inferential
- Boys born to mothers who had been exposed to dioxins (toxic chemical compounds) showed feminised play styles.
- DDT
- Genes
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