Multimethod assessments of temperament were obtained from 89 twins at 18 and 24 months of age. Ratings of subject reaction to restraint and parent ratings of temperament plus coordination of these temperament dimensions with analogous dimensions obtained at 12 months provided evidence of stability of temperament across six-month intervals during…

Mothers of about 100 toddlers completed the Toddler Temperament Scale when their children were 12, 18, and 24 months old. Other data sets were available for: (a) factors representing laboratory observations; (b) measures of mothers' temperament by mothers and by social workers; and (c) measures of the home and family environment by social workers.…