title: Critical periods in the organization of systems.
mesh_terms: D000223:Adaptation, Psychological; D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D000818:Animals; D000831:Animals, Newborn; D002490:Central Nervous System / Q000254:growth & development; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D003423:Critical Period, Psychological; D003491:Cybernetics; D004285:Dogs; D005260:Female; D005333:Fetus; D006128:Growth; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007804:Language Development; D007858:Learning; D008593:Menopause; D008875:Middle Aged; D008954:Models, Biological; D008960:Models, Psychological; D008962:Models, Theoretical; D009034:Mother-Child Relations; D009938:Organizations; D011247:Pregnancy; D012179:Retirement; D012917:Social Adjustment; D012951:Socialization; D013045:Species Specificity; D013597:Systems Analysis; D013997:Time Factors; D014828:Vocalization, Animal