Professor Shigemasu was awarded Bachelor and Masters degrees in Educational Psychology from the University of Tokyo, and PhD from the University of Iowa, US.

He is currently Professor of Psychology at Teikyo University, Japan. He is a former President of the Japanese Psychological Association, Vice President of the Japan Association for Research on Testing and editor of the Japanese Society of Theoretical Psychology.

He is President of the 31st International Congress of Psychology (ICP 2016) to be held in Yokohama, Japan.