This textbook offers a comprehensive overview of research on LGBTQ-parent families. The new edition of the textbook provides updated information and expands on the range and depth of current research. The volume features contributions from scholars in psychology, sociology, human development, family studies, gender studies, sexuality studies, legal studies, social work, and anthropology. In addition, the textbook offers an international perspective, with coverage spanning many diverse nations and cultures. Chapters highlight key research, exploring sexual orientation in relation to other key social identities, such as gender, race, and nationality. Chapters also discuss new, emerging areas of research, including asexuality and immigration. The textbook concludes with a section on the growing sophistication of research methodology in the study of LGBTQ-parent families.