title: Operational development in deaf Costa Rican subjects.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002657:Child Development; D003071:Cognition; D003364:Costa Rica; D003431:Cross-Cultural Comparison; D003638:Deafness; D005260:Female; D006801:Humans; D007804:Language Development; D008297:Male; D011582:Psychological Theory; D012923:Social Class; D013850:Thinking; D014481:United States