Filtered speech audiometry in normal children and in the mentally retarded.
D000293:Adolescent; D000367:Age Factors; D001299:Audiometry; D001307:Auditory Perception; D002648:Child; D002675:Child, Preschool; D004192:Discrimination, Psychological; D005260:Female; D005374:Filtration; D006801:Humans; D008607:Intellectual Disability; D007564:Japan; D007804:Language Development; D008297:Male; D010700:Phonetics; D011571:Psychoacoustics; D012737:Sex Factors; D013060:Speech