Matthew Stief, PhD

Dr. Stief is a Project Manager at the ISPH.  His work focuses on the predictors and correlates of HIV seroconversion in a large national longitudinal sample of high-risk gay, bisexual, and other men who have sex with men. He received his PhD in Developmental Psychology from Cornell University, where he did research on the biopsychosocial foundations of sexual orientation and gender identity, with a special focus on variability within orientations and across cultures. Dr. Stief’s expertise focuses on key populations, research design and implementation, data collection and analysis, survey design, database management, and cross-cultural research. He is fluent in English and has limited working proficiency in Hindi.

Recent Publications:


Stief, M. C. (2017). The sexual orientation and gender presentation of hijrakothi, and panthiin Mumbai, India. Archives of Sexual Behavior, 46, 73-85.

Stief, M. C., Rieger, G., & Savin-Williams, R. C. (2014). Bisexuality is associated with elevated sexual sensation seeking, sexual curiosity, and sexual excitability. Personality and Individual Differences, 66, 193-198.