Temperament.com is about behavioral individuality in infants, children and adults. Just as babies are born with their own combination of physical characteristics such as hair and eye color, skin tone, and physique, behavioral scientists know that each one has patterns of behavior, or temperament, that are also part of their uniqueness. Temperament as defined here refers to temperament as defined here refers to individual differences in behavioral style, the study of which follow from the work of Alexander Thomas and Stella chess and colleagues in the new York Longitudinal Study which began in the 1950s, This page is not limited to just that work, however; it includes other models and frameworks that have grown out to the initial studies. This 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.