Quantity counts: amount of child care and children's socioemotional development.
Belsky
Jay
J
Institute for the Study of Children, Families, and Social Issues, Birkbeck College, University of London, 7 Bedford Square, London WC1B 3RA, UK. j.belsky@bbk.ac.uk
D002652:Child Behavior / Q000523:psychology*; D002656:Child Day Care Centers / Q000379:methods / Q000592:standards*; D002657:Child Development; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D009769:Object Attachment