- Southeast Asian history and historiography
- Singapore history and historiography
- Student and youth activism and politics
- History of childhood and youth
- History of colonialism and
- History of education
L.Kah Seng; E. Liao; L.Cheng Tju; S. Guoquan. Tangled Strands of Modernity: The University Socialist Club and the Contest for Malaya. Amsterdam, Netherlands; Singapore: Amsterdam University Press; National University of Singapore Press, 2012.
E. Liao, “Other Kinds of Amnesia – Young Singaporeans and the Internet”, in Singapore Shifting Boundaries: Social Change in the Early 21st Century, W. Lim, Siddique, S., and Feng, T. Dan Singapore: Asia Urban Lab , 2011.