Vocabulary plays an important role in language and literacy development. However, little is known about vocabulary development in young children who need to learn an official or majority language, in addition to a minority language spoken at home. This dissertation concerned English (majority) and Armenian (minority) vocabulary development in young bilingual children. First, a parallel bilingual vocabulary test was developed, which included picture identification and picture naming tasks to assess listening (receptive) and speaking (expressive) vocabularies in the two languages. Then, the vocabulary test was used to compare bilingual vocabulary growth and examine individual differences in vocabulary performance.
Twenty Junior and twenty-two Senior Kindergarten bilingual children were tested twice on the vocabulary tasks over a six-month interval. Information was also obtained on environmental (parental education, Armenian/English language exposure) and child characteristics (nonverbal cognitive abilities, phonological short-term memory) related to vocabulary development, as potential predictors of individual vocabulary performances.
Children showed growth over time in all four vocabulary tasks. However, less growth was observed in Armenian expressive than in Armenian receptive, English receptive, and English expressive vocabulary. Children had high exposure to Armenian at home; however, consistent with their exposure to English through peers, most were proficient in English vocabulary. The findings suggest a preference to use English and the influential role of English language exposure on higher proficiency in English vocabulary. These findings imply a potential risk for Armenian language maintenance, which warrants future studies.
English language exposure and phonological short-term memory were both unique predictors of English vocabulary, whereas Armenian language exposure was the only unique predictor of Armenian vocabulary. Therefore, providing additional minority language exposure might be the best way to enhance and maintain minority vocabulary and language.
This dissertation had three novel contributions. It provided a sound and replicable method to develop a bilingual vocabulary test in other minority languages. The vocabulary test made it possible to compare performance across minority and majority languages directly and confidently for the first time. Finally, the relative values of four different characteristics were examined in predicting individual differences in minority and majority vocabulary performances.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:OTU.1807/34058 |
| Date | 13 December 2012 |
| Creators | Hovsepian, Alice |
| Contributors | Johnson, Carla J. |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | en_ca |
| Detected Language | English |
| Type | Thesis |
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