The arrival of sibling: changes in patterns of interaction between mother and first-born child.
D001288:Attention; D001722:Birth Order; D002675:Child, Preschool; D003142:Communication; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009034:Mother-Child Relations; D010988:Play and Playthings; D011247:Pregnancy; D012801:Sibling Relations