A comparison of the mother's and a stranger's control over the behavior of infants.
D003448:Crying; D005106:Exploratory Behavior; D005133:Eye Movements; D005149:Facial Expression; D005239:Fear; D006801:Humans; D007223:Infant; D009034:Mother-Child Relations; D010988:Play and Playthings; D011930:Reaction Time; D012919:Social Behavior; D012931:Social Environment; D012938:Social Perception; D013037:Spatial Behavior; D013315:Stress, Psychological