Losing our way

BMJ 2008; 336 doi: (Published 17 April 2008) Cite this as: BMJ 2008;336:867
  1. James Barrett, consultant psychiatrist
  1. 1West London Mental Health NHS Trust, London
  1. james.barrett{at}

Men have better visuospatial abilities than women. They read a map better. But is this difference related to hormones or just because men have a Y chromosome?

In the setting of a gender identity clinic one could investigate this question quite easily, since many of the patients are treated with high doses of cross-sex hormones and can be tested before and after such treatment. …

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