In recent years many studies have shown that children who receive cochlear implants (CI) before two years of age display better speech perception and production compared to children who have been implanted at an older age (Ertmer & Jung, 2012). However, the incidence and the duration of phonological and lexical delay in these children remains unclear (Ertmer & Goffman, 2011). We report on preliminary research into the relation between phonological development and word learning in children who receive CI. Seven preschool hearing-impaired children (HI-group) who received CI between 28 to 63 months (mean age = 40.2 months) were compared to two groups of typically developing children (TD), one age-matched (TD-AM-group, mean age: 40.1), the other hearing-experience matched (TD-EM-group: age M = 33.3). Each child was observed with his/her mother during free-play and the level of phonological development was assessed. Furthermore, each child was tested in a fast-mapping and word-learning task. Data analysis indicated no significant differences in accuracy in the fast mapping and word learning tasks; however, differences emerged in the phonological characteristics of errors. The children in the HI-group display more difficulties in the repetition part of the word learning task (phonetic substitutions: 3/7 children in the HI-group vs. 0/7 in the TD-AM group; fast mapping 2/7 in the HI-group and 0/7 in both TD-AM and TD-EM groups) and the two groups displayed differences in the word learning task (comprehension target error: HI-group: 3.25 and TD-AM: 1.83; p = .07). These differences are related to differences in the phonological processes applied, especially in the case of longer words. The findings make it possible to investigate more deeply the factors associated with phonological delay in some children with CI.
Phonological development and word learning in children with Cochear implants.
Majorano, Marinella;
2015-01-01
Abstract
In recent years many studies have shown that children who receive cochlear implants (CI) before two years of age display better speech perception and production compared to children who have been implanted at an older age (Ertmer & Jung, 2012). However, the incidence and the duration of phonological and lexical delay in these children remains unclear (Ertmer & Goffman, 2011). We report on preliminary research into the relation between phonological development and word learning in children who receive CI. Seven preschool hearing-impaired children (HI-group) who received CI between 28 to 63 months (mean age = 40.2 months) were compared to two groups of typically developing children (TD), one age-matched (TD-AM-group, mean age: 40.1), the other hearing-experience matched (TD-EM-group: age M = 33.3). Each child was observed with his/her mother during free-play and the level of phonological development was assessed. Furthermore, each child was tested in a fast-mapping and word-learning task. Data analysis indicated no significant differences in accuracy in the fast mapping and word learning tasks; however, differences emerged in the phonological characteristics of errors. The children in the HI-group display more difficulties in the repetition part of the word learning task (phonetic substitutions: 3/7 children in the HI-group vs. 0/7 in the TD-AM group; fast mapping 2/7 in the HI-group and 0/7 in both TD-AM and TD-EM groups) and the two groups displayed differences in the word learning task (comprehension target error: HI-group: 3.25 and TD-AM: 1.83; p = .07). These differences are related to differences in the phonological processes applied, especially in the case of longer words. The findings make it possible to investigate more deeply the factors associated with phonological delay in some children with CI.
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