Dr. Po-Hsi Chen is currently a Prof. in the Department of Educational Psychology and Counseling at Taiwan Normal University. His primary areas of expertise are psychological and educational testing, item response theory, and computerized adaptive testing (CAT). He also serves as the Director of the Research Center for Psychological and Educational Testing (RCPET) at Taiwan Normal University, where he oversees Taiwan's Comprehensive Assessment Program for Junior High School Students, an exam taken by approximately 200,000 students annually, and a key criterion for high school admissions. This is Taiwan’s largest high-stakes test. In terms of research honors, Prof. Chen was awarded the Mùduó Award for Educational Contributions by the Chinese Association of Psychological Testing in 2013, and also received the Special Outstanding Talent Award from the National Science Council of Taiwan in 2013, 2019 and 2023. He has served multiple terms as a board member of the Chinese Association of Psychological Testing and was also its president. Currently, he is a consultant to the College Entrance Examination Center and a member of the Examination Research Committee of Taiwan's Ministry of Examination.