Lecturer, Department of Special Education, California State University – Northridge
Adjunct Professor, National University, California
Director, Centre for Education Research Partnership, Rochester Institute of Technology, US
Professor, Department of Research, National Technical Institute for the Deaf, Rochester Institute of Technology
Deputy Director, ESRC Deafness, Cognition and Language Research Centre (DCAL), University College London
Professor, Department of Language & Communication Science, City University, London
Associate Professor, Child Development Division, Educational Psychology, University of Illinois
Initiative Co-Director, NSF-funded National Project " Visual Language and Visual Learning"
Director, ESRC Deafness, Cognition and Language Research Centre (DCAL), University College London
Vice Dean (Research), Division of Psychology & Language Sciences, University College London
香港中文大学(深圳)人文社科学院院长
香港中文大学语言获得实验室总监
香港中文大学语言学及现代语言系教授及系主任
香港中文大学医学院耳鼻咽喉-头颈外科学系言语治疗科主管及助理教授
香港大学教育学院学习、发展及多元教育部副教授
香港大学教育学院英国语文教育部教授
香港大学教育学院副教授
香港中文大学儿童双语研究中心总监
香港中文大学语言学及现代语言系教授