1 Department of Psychology Faculty of Arts and Social Sciences, National University of Singapore, Block AS4, Level 2, 9 Arts Link, 117570, Singapore. mikewlcheung@nus.edu.sg.
2 ARCH Statistical Consulting, University of Kansas, LLC, P.O. Box 3877, Lawrence, KS, 66046, USA. arch.stat.consult@gmail.com.
3 Center for Research Methods and Data Analysis, University of Kansas, Kansas, USA. arch.stat.consult@gmail.com.