This far-reaching and contemporary new Encyclopedia examines and explores the lives and experiences of Lesbian, Gay, Bisexual, Transgender and Queer (LGBTQ) individuals, focusing on the contexts and forces that shape their lives.The work focuses on LGBTQ issues and identity primarily through the lenses of psychology, human development and sociology, emphasizing queer, feminist and ecological perspectives on the topic, and addresses questions such as:What are the key theories used to understand variations in sexual orientation and gender identity?How do Gay Straight Alliances (GSA) affect LGBTQ youth?How do LGBTQ people experience the transition to parenthood?How does sexual orientation intersect with other key social locations, such as race, to shape experience and identity?What are the effects of marriage equality on sexual minority individuals and couples?Top researchers and clinicians contribute to the 400 signed entries, from fields such as:PsychologyHuman DevelopmentGender/Queer StudiesSexuality StudiesSocial WorkSociologyThe SAGE Encyclopedia of LGBTQ Studiesis an essential resource for researchers interested in an interdisciplinary perspective on LGBTQ lives and issues.