| Summary: | 碩士 === 國立臺北護理健康大學 === 聽語障礙科學研究所 === 101 === This study aims to investigate the development of backing process, specifically the velarization process, in preschool children from aged 3 to 6. A longitudinal and retrospect experimental design was employed. Speech data were collected from 67 children with backing process who participated in the “establishment of screening and following service program for preschool children with speech, language and hearing” project hold by the Department of Health, Bureau of Health Promotion, the Republic Of China. All children were recruited from three different Counties in Taiwan, the Ilan County, the Nantou County and Chiayi City. Children were followed up within 2 academic years. In order to identify how age is related to the degree of backing process in preschool children, the occurrence of velarization process is measured according to three different age groups: 3 to 4 years old, 4 to 5 years old and over 5 to 6 years old. In addition, changes in the percentage of occurrence of backing process and the potential associated factors, including age, type of backing process, degree of articulation/phonological disorder and association of other types of phonological processes, were discussed.
Results shown that, for most children, the backing process can persist at least up to one year. Furthermore, in most cases, the backing process was generally suppressed after 5 years old. The type of backing and the degree of articulation/phonological disorder are critical factors relating to the suppression of backing process. The appropriate timing for interventions and the relevant considerations are important references for medical associates.
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