Psychology.

-45 participants

-infantile ablatio penis

-David Reimer

-brought up as females even though they were male.

-interviewed annually.

-hormone changes, operations, lifestyle changes.

--matched pairs design.

-sexual reassignment.

-circumsition went wrong.

-brought up as a female.

-He was a twin

-never felt female.

-parents told him and his brother, who then killed himself

-David reimer commited suicide