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. 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.

Matthew 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.

Recent Publications:


Grov C, Westmoreland DA, Carneiro PB, Stief M, MacCrate C, Mirzayi C, Pantalone DW, Patel VV, Nash D. Recruiting vulnerable populations to participate in HIV prevention research: findings from the Together 5000 cohort study. Ann Epidemiol. 2019 May 16. pii: S1047-2797(19)30065-1. doi: 10.1016/j.annepidem.2019.05.003. [Epub ahead of print]

Nash D, Stief M, MacCrate C, Mirzayi C, Patel VV, Hoover D, Pantalone DW, Golub S, Millett G, D'Angelo AB, Westmoreland DA, Grov C. A Web-Based Study of HIV Prevention in the Era of Pre-Exposure Prophylaxis Among Vulnerable HIV-Negative Gay and Bisexual Men, Transmen, and Transwomen Who Have Sex With Men: Protocol for an Observational Cohort Study. JMIR Res Protoc. 2019 Sep 17;8(9):e13715. doi: 10.2196/13715.

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.