Education and Experience

Born and raised in Tokyo, Japan, Daiki Hiramori graduated from Hosei University Daini Junior High School in 2006 and Hosei University Daini Senior High School in 2009. He then graduated from the International Christian University with a BA in Sociology and a minor in Mathematics in 2014. He was also an exchange student at the University of California, Irvine from 2012-2013. He earned an MA in Sociology in 2016, a Graduate Certificate in Feminist Studies in 2018, and a PhD in Sociology in 2022, all from the University of Washington. His dissertation is titled, “Sexuality Stratification in Contemporary Japan: A Study in Sociology.”

Research Interests

Professor Hiramori uses quantitative methods to study stratification and inequality based on sexuality and gender as well as sexual and gender minority populations from a queer and feminist perspective. In particular, he is interested in socioeconomic inequality based on sexual orientation and gender identity (SOGI), the measurement of SOGI on surveys, and queer and feminist methodologies. In his dissertation, he used the Osaka City Residents’ Survey, one of the few population-based surveys that ask about sexual orientation in Japan, to explore the association between sexual orientation and educational attainment, occupational segregation, and earnings disparities in Japan. His publications have appeared in the Journal of Population Problems and Gender and Sexuality. Through his research and educational activities, he is committed to using his privilege as a social scientist to focus on the ways in which systemically marginalized populations, such as lesbian, gay, bisexual, transgender, and queer (LGBTQ) people, become free in a system that operates to oppress them. Please see Daiki’s personal website ( for more details.

Teaching courses
Research output

Hiramori, Daiki, Emily Knaphus-Soran, and Elizabeth Litzler. 2021. “Critically Quantitative: Measuring Community Cultural Wealth on Surveys.” 2021 ASEE (American Society for Engineering Education) Virtual Annual Conference Proceedings.

Hiramori, Daiki, and Saori Kamano. 2020. “Asking about Sexual Orientation and Gender Identity in Social Surveys in Japan: Findings from the Osaka City Residents’ Survey and Related Preparatory Studies.Journal of Population Problems 76(4):443-66.

Hiramori, Daiki. 2015. “Challenges of Sexual and Gender Minorities in the Workplace: Multivariate Analyses of Income and Willingness to Continue Working(職場における性的マイノリティの困難――収入および勤続意欲の多変量解析).” Gender and Sexuality(ジェンダー&セクシュアリティ) 10:91-118. In Japanese.