The operational definition of human attachment.
D000375:Aging; D000818:Animals; D001522:Behavior, Animal; D002648:Child; D002652:Child Behavior; D002675:Child, Preschool; D003448:Crying; D004777:Environment; D005106:Exploratory Behavior; D005149:Facial Expression; D005239:Fear; D005260:Female; D006185:Habituation, Psychophysiologic; D000882:Haplorhini; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007398:Interpersonal Relations; D008297:Male; D009769:Object Attachment; D010287:Parent-Child Relations; D012107:Research Design; D012649:Self Concept; D012919:Social Behavior