Used adaptation of Attachment Q-Set (AQS) with 24 infant-mother monkey dyads to clarify the secure-base concept. Found that infants of high-ranking monkeys scored higher than those of low-ranking ones, suggesting the origins of the secure-base phenomenon, as well as the importance of exploring infant secure-base behaviors in families of different…

Two studies investigated how social class and race are associated with mathematical thinking. The first study compared poor Black preschoolers with a group of both Black and White middle-class children; the second study compared Black and White children of lower- and middle-class status. Children were drawn from both preschool and kindergarten…

Argues that none of the conventional methods for assessing attachment meet all criteria. Describes development of a 100-item sort for assessing secure attachment in toddlers, closely tied to Bowlby's control systems model of attachment. Evaluates the Q-sort in terms of criteria for valid thoery-based assessments that have applicability beyond this…

Reports on interplay between social and developmental processes in children's numerical understandings in working- and middle-class home settings. Methods included interviews with 78 children aged 2 1/2 and 4 1/2 years to assess their numerical understandings, interviews with the mothers about their children's everyday number activities, and…