Educational disadvantage - the bearing of the early home background on children's academic attainment and school progress, T.Cox; social interaction with the parent during infancy and later intellectual competence in children born preterm, Leila Beckwith and Sardle E.Cohen; helping parents with preterm infants - field test of a protocol, Kathryn E.Barnard et al; the effects of early mother-child interaction and maternal language patterns on later development, Norma M.Ringler; early environment and cognitive competence - the little rock study, Robert H.Bradley and Bettye M.Caldwell; early mother-son relations and son's cognitive and social functioning at age 9 - a twin longitudinal study, Hugh Lytton et al; parent training, home environment and early childhood development - a long-term follow up study, Edward E.Gotts; parental modernity and child academic competence - toward a theory of individual and societal development, Earl S.Schaefer.