Biomaterial Database

Interaural asymmetries revealed by dichotic listening tests in normal and dyslexic children. 2002

Deborah W Moncrieff, and Frank E Musiek

Department of Communication Sciences, University of Connecticut, Storrs, USA.

Normal and dyslexic right-handed children were assessed with three dichotic listening tests, the Dichotic Digits test, the Competing Words subtest of the SCAN, and the Dichotic Consonant-Vowel test. Performance was measured as both number and percentage of correct responses in the right and left ears. Laterality was defined as a simple difference in percentage between the two ears. Differences across the tests were revealed for all children, with the greatest differences occurring for left-ear responses. Only one dichotic listening test, Competing Words from the SCAN, produced a consistent right-ear advantage across all of the children tested. Between groups of children, differences in performance and in laterality were demonstrated. Using a criterion of poorer than 76 percent correct for the left ear, the Competing Words subtest of the SCAN identified 7 of the 10 dyslexic children as abnormal, with no false alarms in the control group.

UI	MeSH Term	Description	Entries
D010700	Phonetics	The science or study of speech sounds and their production, transmission, and reception, and their analysis, classification, and transcription. (Random House Unabridged Dictionary, 2d ed)	Speech Sounds,Sound, Speech,Sounds, Speech,Speech Sound
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D004007	Dichotic Listening Tests	Tests for central hearing disorders based on the competing message technique (binaural separation).	Dichotic Listening Test,Listening Test, Dichotic,Listening Tests, Dichotic,Test, Dichotic Listening,Tests, Dichotic Listening
D004410	Dyslexia	A cognitive disorder characterized by an impaired ability to comprehend written and printed words or phrases despite intact vision. This condition may be developmental or acquired. Developmental dyslexia is marked by reading achievement that falls substantially below that expected given the individual's chronological age, measured intelligence, and age-appropriate education. The disturbance in reading significantly interferes with academic achievement or with activities of daily living that require reading skills. (From DSM-IV)	Alexia,Dyslexia, Developmental,Reading Disability, Developmental,Reading Disorder,Reading Disorder, Developmental,Developmental Reading Disorder,Word Blindness,Alexias,Blindness, Word,Blindnesses, Word,Developmental Dyslexia,Developmental Dyslexias,Developmental Reading Disabilities,Developmental Reading Disability,Developmental Reading Disorders,Disabilities, Developmental Reading,Disability, Developmental Reading,Disorder, Developmental Reading,Disorder, Reading,Disorders, Developmental Reading,Disorders, Reading,Dyslexias,Dyslexias, Developmental,Reading Disabilities, Developmental,Reading Disorders,Reading Disorders, Developmental,Word Blindnesses
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001308	Auditory Perceptual Disorders	Acquired or developmental cognitive disorders of AUDITORY PERCEPTION characterized by a reduced ability to perceive information contained in auditory stimuli despite intact auditory pathways. Affected individuals have difficulty with speech perception, sound localization, and comprehending the meaning of inflections of speech.	Acoustic Perceptual Disorder,Perceptual Disorders, Auditory,Auditory Comprehension Disorder,Auditory Inattention,Auditory Processing Disorder,Psychoacoustical Disorders,Acoustic Perceptual Disorders,Auditory Comprehension Disorders,Auditory Inattentions,Auditory Perceptual Disorder,Auditory Processing Disorders,Comprehension Disorder, Auditory,Comprehension Disorders, Auditory,Disorder, Acoustic Perceptual,Disorder, Auditory Comprehension,Disorder, Auditory Processing,Disorder, Psychoacoustical,Disorders, Acoustic Perceptual,Disorders, Auditory Comprehension,Disorders, Auditory Processing,Disorders, Psychoacoustical,Inattention, Auditory,Inattentions, Auditory,Perceptual Disorder, Acoustic,Perceptual Disorder, Auditory,Perceptual Disorders, Acoustic,Processing Disorder, Auditory,Processing Disorders, Auditory,Psychoacoustical Disorder
D012720	Severity of Illness Index	Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.	Illness Index Severities,Illness Index Severity
D013067	Speech Perception	The process whereby an utterance is decoded into a representation in terms of linguistic units (sequences of phonetic segments which combine to form lexical and grammatical morphemes).	Speech Discrimination,Discrimination, Speech,Perception, Speech