Musa Adekunle, Ayanwale, is a postdoctoral research fellow at the University of Johannesburg, South Africa, and a Lecturer at the National University of Lesotho, Lesotho. He is a certified assessment and psychometric expert with a Ph.D. in Educational Research, Measurement, and Evaluation, a master’s degree in Educational Measurement and Evaluation, Postgraduate Diploma in Education, and B.Sc. in Statistics. His research interest spans the application of test theories; development and validation of measurement instruments; research/assessment/evaluation capacity building; Psychometrics; Generalizability Theory-based Reliability Analysis, programme development, monitoring, and evaluation; Q-Methodology; structural modelling and computerized adaptive testing research, respectively. Also, he is an experienced and top-notch quantitative and qualitative data analyst and distinguished author who has published in many reputable local and foreign journals. He is a peer reviewer for several local and international journals. He is a member of learned societies such as; the International Association for Computerized Adaptive Testing, Association of Computerized Adaptive Testing in Africa, American Educational Research Association, Educational Assessment and Research Network in Africa, Association of Behavioural Research Analysts and Psychometricians, Data Science of Nigeria and Teacher Registration Council of Nigeria..