Attachment representations and self-confidence were assessed at age 7 on the basis of children's responses to a separation story and independent observations, although cognitive functioning was measured at ages 7-17 years based on a battery of Piagetian tasks assessing concrete and formal reasoning. Children with a secure attachment representation…

This longitudinal study examined the multiple influences of social class and family socialization on intelligence at age 7, and on the development of cognitive competence from age 7 through age 15 in a sample of 121 urban Icelandic children and adolescents. Socialization condition was defined as sources of parental support and control strategies,…