Evaluation

• Criticism of BSTc size and neuronal number


  • Chung et al.
  • Significant sexual dimorphism doesn't develop until adulthood
  • However, MTF transgenders report their feelings start at childhood
  • Therefore, it is unlikely that BSTc volume and neuron number can be a neuroanatomical signature identifiable with gender identity
• Evidence for genetic basis


  • Hare et al.
  • Transsexual gene - a longer version of the androgen receptor gene
  • Reduces sensitivity to testosterone, under-masculinising the brain
  • MTF more likely to have this gene
• Criticism for brain scans


  • Marik et al.
  • 2000 participants - 25% replicability
  • <500 - 5%
  • Therefore, brain scans must be done with large sample sizes
• Socially sensitive research


  • Removes responsibility from the person
  • Stigmatises characteristics
  • Clinicians should avoid reinforcing damaging stereotypes