Doctoral Student

"YJ's research interests lie at the intersection of family demography and computational social sciences with particular focuses on family instability, parenthood politics, and population health. His research investigates how life experiences in early and later childhood and adolescence such as parents' divorce/separation, coresidence with social fathers, and (non)resident father involvement shape the children's understanding of family and their later health, union formation, and intergenerational solidarity.

Leveraging recent technologies of machine learning and large language models (LLMs), he also tries to enhance certain fields of family demography such as prediction of future life outcomes by incorporating word embedding and fine-tuning of LLMs. Moreover, he collects and analyzes data from various social media platforms such as Reddit and Twitter to examine the dynamic between fathers' grievances and men's rights movement, extending his research interests over parenthood politics.

He has completed an M.A. in Sociology from Yonsei University, Republic of Korea, and his master's thesis investigated how longer coresidence with social fathers is associated with children's behavior problems. For his doctoral research, using causal inference and computational techniques, YJ plans on investigating how the intersections of, and changes over time in, family structure, social policy, and AI affect children's life trajectories."