Stranger reaction versus stranger anxiety.
D000328:Adult; D000339:Affect; D001007:Anxiety / Q000523:psychology*; D001288:Attention; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D003071:Cognition; D004532:Ego; D004777:Environment; D005239:Fear; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007858:Learning; D008297:Male; D009034:Mother-Child Relations; D010553:Personality Development; D011574:Psychoanalytic Theory