"In most corners of the globe, a majority of people see themselves as either male or female. Moreover, there has long been, and remains, a general assumption that those are the only possible genders that human beings can be. The gender spectrum is extremely diverse and non-binary people can and do express a range of gender identities so wide that it can seem confusing to some people"-- Provided by publisher.

Many Alternative Gender Identities -- Being Transgender -- Being Non-Binary -- Social Challenges of the Alternatively Gendered.