The screening reliably detects hearing disorders among persons with ID. The prevalence of hearing impairment in this population is considerably higher than in the general population, and the proportion of undetected hearing impairments is large, even among people with only mild and moderate ID, as examined in this study. Therefore, a screening is highly recommended, and special attention from caregivers and professionals as well as regular hearing assessment and standard therapy programmes are required for persons with ID.
Among persons with intellectual disability, the prevalence of hearing impairments is high. During the German Special Olympics Summer Games 2004, a hearing screening was conducted on 755 athletes with intellectual disabilities. Obligatory screening included ear inspection and recording of otoacoustic emissions, and optional screening included tympanometry and brief pure-tone audiometry. 38.0% of the athletes failed the screening. 53.0% needed ear wax removal. 56.1% of the fails indicated sensorineural hearing loss and 13.6% indicated mixed hearing loss. 12.5% of the fails were caused by unremovable ear wax, 1.4% by ear canal affections, and 16.4% by middle ear problems. Left ear fails were more frequent than right ear fails. A peripheral hearing disturbance can thus be expected in every third subject. The high failure rate, a considerable percentage of previously undetected profound hearing loss (1.1%), and the frequent need for ear wax removal, suggest that nearly half of persons with intellectual disabilities need regular otological or audiological consultations.
This paper describes the development and validation of the Developmental Snapshot, a 52-item parent questionnaire on child language and vocal communication development that can be administered monthly and scored automatically. The Snapshot was created to provide an easily administered monthly progress monitoring tool that enables parents to better recognize language milestones and offer professionals prompt information to fine-tune intervention strategies. Initial items were piloted by 15 families; refinement and further development of the instrument was conducted with parents of 308 typically developing children. Reliability and criterion validity metrics were examined on subsets of approximately 60 children who completed the Snapshot on a monthly basis and were evaluated on standard SLP-administered assessments. Divergent validity was also examined for samples of children diagnosed with language delays related to ASD (n = 77) or not (n = 49). Results supported the criterion validity (r = .67-.97) and test-retest reliability claims of the Snapshot (r = .95). Sensitivity and specificity for language delay detection also were good at 87%. Potential applications for progress monitoring, fidelity of intervention, and enhancing parent awareness of their child's language and vocal communication changes are discussed.
LANGUAGE SNAPSHOT 3
Language Assessment in a Snap: Monitoring Progress up to 36 MonthsAdvances in our knowledge of the important role played by the home language environment as a social determinant of very young children's language learning are rapidly
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