Extension of the Gender Identity Scale for Males.

Our earlier Femine Gender Identity Scale for males appear to measure a strong single factor which was reliable and displayed substantial discriminant validity. However, the number of items was small and there was substantial overlap between items with respect to their meaning. In an attempt to overcome these limitations, in the present study the scale was extended and validated. Each item of the new scale differentiated among the groups in an experimental sample and, subsequently, in a cross-validation sample. A secondary finding was the significantly higher femine gender identity scores of homosexual patients over homosexual nonpatients.