B-DI is a project started in 1996 to promote understanding of behavioral individuality among parents and professionals. The B-DI website is intended as a clearinghouse for research and practical information about temperamental characteristics to be used by parents, students, professionals and others who have an interest in behavioral individuality. Resources include temperament questionnaires and scoring software for use with children and adults as well as books and a newsletter on dealing with 'high maintenance' and 'spirited' children.