Masumi Iida is an associate Professor in the T. Denny Sanford School of Social and Family Dynamics at Arizona State University. Iida’s research interests span several domains of social, health, and quantitative psychology. Her primary substantive interest lies in understanding stress, coping, and well-being, with emphases on dynamic processes and close relationships. Most of her research has concentrated on understanding the determinants and consequences of social support using a daily diary method. She received her bachelor's in psychology and mathematics (honors) from Bryn Mawr College and doctorate in psychology from New York University.