title: Performance indicator for subject motivation in respiratory tests.
mesh_terms: D000328:Adult; D001296:Audiovisual Aids / Q000295:instrumentation; D002648:Child; D002675:Child, Preschool; D005540:Forced Expiratory Flow Rates; D006801:Humans; D009042:Motivation; D012129:Respiratory Function Tests / Q000295:instrumentation* / Q000523:psychology; D013147:Spirometry / Q000295:instrumentation; D014797:Vital Capacity