title: Social class differences in attachment behaviors of ten-month-old infants.
mesh_terms: D002652:Child Behavior; D002657:Child Development; D003448:Crying; D005260:Female; D006801:Humans; D007223:Infant; D009034:Mother-Child Relations; D009043:Motor Activity; D009769:Object Attachment; D010988:Play and Playthings; D011930:Reaction Time; D012919:Social Behavior; D012923:Social Class; D013037:Spatial Behavior; D014110:Touch