Resolves once transgenderism is no longer as controversial a subject and we can be confident that research is sound and unbiased. (Probably not for another 20 years at least.)

This is about the causes of the gender gap at the time of market creation, not at the time of resolution. In the event of multiple casues, I'll resolve to each in proportion.

• There aren't: The statistics are wrong for some reason, and the actual number of people who identify as a gender other than their biological sex is about equal between the genders.

• Biological factors (latent): Biological men are genetically more predisposed to have gender disphoria than biological women.

• Biological factors (conscious): Having female biological traits is preferred over male due to reasons inherent to those traits, and people conciously make that choice.

• Cultural factors (latent): Some aspect of American culture causes more biological men to experience gender disphoria than biological women.

• Cultural factors (conscious): Some aspect of American culture causes people to prefer being percieved as female over male, and people conciously make that choice.