Book excerpt: Handbook of Gender and Sexuality in Psychological Assessment brings together two interrelated realms: psychological assessment with gender and sexuality. This handbook aids in expanding the psychological assessors’ knowledge and skill when considering how gender and sexuality shapes the client’s and the assessor’s experiences. Throughout the six sections, gender and sexuality are discussed in their relation to different psychological methods of assessment; various psychological disorders; special considerations for children, adolescents, and older adults; important training and ethical considerations; as well as several in-depth case discussions.