1. Department of Electrical and Computer Engineering, Social and Intelligent Robotics Research Laboratory (SIRRL), University of Waterloo , Waterloo , Ontario , Canada
2. Department of Psychology, Faculty of Arts, University of Waterloo , Waterloo , Ontario , Canada
3. Department of Communication Sciences and Disorders, Institute of Stuttering Treatment and Research (ISTAR), Faculty of Rehabilitation Medicine , University of Alberta , Canada
4. Department of Electrical and Computer Engineering, Department of Systems Design Engineering, University of Waterloo , Waterloo , Ontario , Canada