Medical interventions: masculinising or feminising hormones can be taken to alter physical features, with the ultimate remedy being gender reassignment surgery
The clinical label used in the more recent DSM-5 classification system, in order to remove the damaging label of people with the condition as 'disordered'
The condition is seen as an inherited abnormality - Attention has centred on gene variants of the androgen receptor, which influences the action of testosterone and is involved in the masculinisation of the brain
Hare et al. (2009) – looked at the DNA of 112 MtF transgender participants and found they were more likely to have a longer version of the androgen receptor gene compared to non-transgender individuals
Sees a role for hormonal imbalances during foetal growth in the womb and in later child development. Significant amounts of male hormones are secreted from the testes during the third month of pregnancy and again between 2-12 weeks after birth, which is crucial for masculinisation of the infant. Hormone levels in the womb may be affected by genetic conditions, such as androgen insensitivity syndrome or maternal stress
Gladue (1985) – reported that there were few, if any, hormonal differences between gender-dysphoric men, heterosexual men and homosexual men, as evidence against the influence of hormones on gender dysphoria. A social explanation may therefore be more fitting
Zucker et al. (2008) – performed a longitudinal study on 25 gender-dysphoric females between 2-3 years of age. Only 12% (3) were still gender dysphoric at age 18
Furthermore, a study on equivalent males found that only 20% were still gender dysphoric as adults, thus supporting the idea that the majority of people exhibiting gender dysphoria do so only in the short term
Generally speaking, the BSTc is twice as large in a heterosexual male brain compared to a heterosexual female brain, containing twice the number of neurons
Zhou et al. (1995) and Kruijver et al. (2000) – both found that the number of neurons in the BSTc/volume of the BSTc of MtF transgender participants was similar to that found in a female brain, and the BSTc of FtM transgender individuals was more similar to that of a male brain
Rametti et al. (2011) – studied the brains of FtM transgender participants before they started transgender hormone therapy. They found that the white matter was more similar to that found in males i.e. those who shared their gender identity rather than their biological sex
This suggests that BSTc volumes/ neuron numbers found in post-mortem research were affected by hormonal therapy and not prenatal development as suggested
Chung et al. (2002) challenged the time at which the BSTc appears, claiming that the differences in volume and number of neurons does not develop until adulthood
Rekers (1995): reported that in 70 gender-dysphoric boys, there was more evidence of social than biological factors. In particular, there was a common factor of a lack of stereotypically male models, suggesting that social learning factors play a role in the condition
Bennet (2006) Points out that while SLT explains the development of cross-gender behaviours, it cannot explain the strength of beliefs that individuals possess concerning being the wrong gender, or the resistance of such beliefs to therapy
childhood truma/ upbringing - researchers suggest that gender dysphoria is linked to mental illness, which may be linked to someones duficulty growing up.
Coates et al. (1991) - conducted a case study of a boy with gender dysphoria and concluded that this occurred as a result of his mother's depression following an abortion. They argued that this caused the boy significant trauma when he was aged 3 and that this led to a cross-genderfantasy as a way of resolving the anxiety he experienced