Since 1959, The Mental Research Institute of Palo Alto, California, has been one of the leading sources of innovative models which have influenced interactional/systemic studies, family therapy, and problem-solving brief therapy approaches throughout the world. Continuing applied research and theory development have expanded the use of interactional concepts to community, school, and business settings. The focus of MRI is to explore and to encourage the use of an interactional approach to further understand and more effectively resolve human problems across the spectrum, from the family to all other levels of social organization.