Rense Lange was awarded a Master’s in Computer Science and a Ph.D. in psychology by the University of Urbana-Champaign, USA. After teaching at the University of Illinois (USA), he worked as a psychometric consultant for the State of Illinois where he was responsible for the annual state-wide test scores of about 1 Million students on about 2 million high-stakes tests (multiple-choice and essay). As a Research Professor he leads the Laboratory for Statistics and Computation at ISLA-Gaia, Portugal. His past work as CEO of Integrated Knowledge Systems (Chatham, USA) includes: design and implementation of Computer Adaptive Testing systems (CAT), design and implementation of personnel selection tests focusing on hospitality contexts, extensive international work on social media applications in Canada, China, Malaysia, and the USA. Dr. Lange was recognized as an Honorary Fellow at the Rasch Measurement Malaysian Chapter (myRasch). He has published over 100 papers in refereed journals, he is a frequent speaker at international conferences, and occasionally gives workshops on Rasch scaling and Machine Learning. Dr. Lange also published in the areas of Criminology, Econometrics, Medicine, Psychology, Psychiatry, and Social Media.