Liu Tzu-suan and Xia Yiwei, PhD students from the Department of Sociology, Faculty of Social Sciences (FSS), University of Macau (UM), and their supervisor Prof Spencer De Li, associate dean of the FSS, recently won a second prize at the National Conference on Substance Abuse Prevention and Treatment and the 17th Academic Conference of the Chinese Association of Drug Abuse Prevention and Treatment, for their co-authored paper titled ‘Parenting Practices and Adolescent Drug Use: A Comparison between China and USA’.