title: Fear of strangers in children and the orienting reaction.
mesh_terms: D000818:Animals; D001143:Arousal; D002415:Cats; D002652:Child Behavior; D002657:Child Development; D003071:Cognition; D003214:Conditioning, Classical; D003220:Conflict, Psychological; D004562:Electrocardiography; D004777:Environment; D005010:Ethology; D005106:Exploratory Behavior; D005239:Fear; D005403:Fixation, Ocular; D000882:Haplorhini; D006801:Humans; D007223:Infant; D009949:Orientation; D010553:Personality Development; D010698:Phobic Disorders; D011582:Psychological Theory; D012919:Social Behavior