Dr. Yu Niiya is a professor in the Faculty of Global and Interdisciplinary Studies at Hosei University, Tokyo, Japan. She received her M.A. from the University of Tokyo in 2001 and her Ph.D from the University of Michigan in 2006. Her research interests lie in the exploration of individual motivation and cultural/contextual factors that encourage or impede helping in ambiguous situations, where help is not explicitly requested. She is also interested in how perceiving time as a zero-sum or nonzero-sum resource relates to psychological well-being and relationship satisfaction. Furthermore, she has worked on what enables people to learn from failure, the positive relational consequences of adult’s amae, and many cross-cultural studies on various topics.