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The Effect of Age of Acquisition on the Development of Lexical Attainment and Oral Proficiency in English as L2 in Adult Native Arabic Speakers
This study investigates the influence of the age of acquisition (AoA) on the development of lexical attainment and oral proficiency in English as a second language (L2) among adult native Arabic speakers, focusing on classroom foreign language learners within the Egyptian context. AoA, a critical va...
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| Format: | Thesis |
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AUC Knowledge Fountain
2025
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| _version_ | 1867613424247111680 |
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| access_status_str | Open Access |
| author | Ahmed Kamar El-Zaman, Mona |
| author_browse | Ahmed Kamar El-Zaman, Mona |
| author_facet | Ahmed Kamar El-Zaman, Mona |
| author_sort | Ahmed Kamar El-Zaman, Mona |
| collection | Thesis |
| description | This study investigates the influence of the age of acquisition (AoA) on the development of lexical attainment and oral proficiency in English as a second language (L2) among adult native Arabic speakers, focusing on classroom foreign language learners within the Egyptian context. AoA, a critical variable in second language acquisition (SLA) research, is explored in relation to two key domains: lexical knowledge and oral proficiency. The study examines the role of AoA and AoA related effects, such as the order of bilingualism and the length of exposure to rich language input (LoE) as a confounding factor. Through a mixed-methods approach, the research quantitatively assesses vocabulary size using the Peabody Picture Vocabulary Test (PPVT-5) and qualitatively analyzes oral speech production based on spontaneous speech samples. The participants, 42 native Arabic speakers aged 23-28, were categorized based on their age of English L2 acquisition onset, representing early childhood and late childhood sequential bilinguals. The findings reveal significant correlations between AoA and L2 proficiency, with early bilinguals generally outperforming late bilinguals in both lexical knowledge and oral proficiency. However, the study also attempts to investigate the impact of LoE on L2 development, suggesting that extended exposure to rich language input might compensate for the disadvantages associated with late acquisition. The findings could contribute to the ongoing debate on AoA effects in SLA and offer implications for language education policies and practices, particularly in contexts involving the Arabic-English language pair. |
| format | Thesis |
| id | oai:fount.aucegypt.edu:etds-3445 |
| institution | American University in Cairo (Egypt) |
| last_indexed | 2026-06-10T12:35:55.364Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from AUC Knowledge Fountain — bepress |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | AUC Knowledge Fountain |
| publisherStr | AUC Knowledge Fountain |
| record_format | dspace |
| source_str | AUC Knowledge Fountain — bepress |
| spelling | oai:fount.aucegypt.edu:etds-3445 The Effect of Age of Acquisition on the Development of Lexical Attainment and Oral Proficiency in English as L2 in Adult Native Arabic Speakers Ahmed Kamar El-Zaman, Mona This study investigates the influence of the age of acquisition (AoA) on the development of lexical attainment and oral proficiency in English as a second language (L2) among adult native Arabic speakers, focusing on classroom foreign language learners within the Egyptian context. AoA, a critical variable in second language acquisition (SLA) research, is explored in relation to two key domains: lexical knowledge and oral proficiency. The study examines the role of AoA and AoA related effects, such as the order of bilingualism and the length of exposure to rich language input (LoE) as a confounding factor. Through a mixed-methods approach, the research quantitatively assesses vocabulary size using the Peabody Picture Vocabulary Test (PPVT-5) and qualitatively analyzes oral speech production based on spontaneous speech samples. The participants, 42 native Arabic speakers aged 23-28, were categorized based on their age of English L2 acquisition onset, representing early childhood and late childhood sequential bilinguals. The findings reveal significant correlations between AoA and L2 proficiency, with early bilinguals generally outperforming late bilinguals in both lexical knowledge and oral proficiency. However, the study also attempts to investigate the impact of LoE on L2 development, suggesting that extended exposure to rich language input might compensate for the disadvantages associated with late acquisition. The findings could contribute to the ongoing debate on AoA effects in SLA and offer implications for language education policies and practices, particularly in contexts involving the Arabic-English language pair. 2025-02-15T08:00:00Z thesis application/pdf https://fount.aucegypt.edu/etds/2396 https://fount.aucegypt.edu/context/etds/article/3445/viewcontent/Mona_Ahmed_KamarElZaman_Thesis.pdf Theses and Dissertations AUC Knowledge Fountain Second Language Acquisition Age of Acquisition Early Bilingualism Late Bilingualism L2 Input FL Classroom Vocabulary Size Lexical attainment Oral Proficiency Arabic-English Language Pair Adult and Continuing Education Applied Linguistics Bilingual, Multilingual, and Multicultural Education Curriculum and Instruction Early Childhood Education First and Second Language Acquisition |
| spellingShingle | Second Language Acquisition Age of Acquisition Early Bilingualism Late Bilingualism L2 Input FL Classroom Vocabulary Size Lexical attainment Oral Proficiency Arabic-English Language Pair Adult and Continuing Education Applied Linguistics Bilingual, Multilingual, and Multicultural Education Curriculum and Instruction Early Childhood Education First and Second Language Acquisition Ahmed Kamar El-Zaman, Mona The Effect of Age of Acquisition on the Development of Lexical Attainment and Oral Proficiency in English as L2 in Adult Native Arabic Speakers |
| title | The Effect of Age of Acquisition on the Development of Lexical Attainment and Oral Proficiency in English as L2 in Adult Native Arabic Speakers |
| title_full | The Effect of Age of Acquisition on the Development of Lexical Attainment and Oral Proficiency in English as L2 in Adult Native Arabic Speakers |
| title_fullStr | The Effect of Age of Acquisition on the Development of Lexical Attainment and Oral Proficiency in English as L2 in Adult Native Arabic Speakers |
| title_full_unstemmed | The Effect of Age of Acquisition on the Development of Lexical Attainment and Oral Proficiency in English as L2 in Adult Native Arabic Speakers |
| title_short | The Effect of Age of Acquisition on the Development of Lexical Attainment and Oral Proficiency in English as L2 in Adult Native Arabic Speakers |
| title_sort | effect of age of acquisition on the development of lexical attainment and oral proficiency in english as l2 in adult native arabic speakers |
| topic | Second Language Acquisition Age of Acquisition Early Bilingualism Late Bilingualism L2 Input FL Classroom Vocabulary Size Lexical attainment Oral Proficiency Arabic-English Language Pair Adult and Continuing Education Applied Linguistics Bilingual, Multilingual, and Multicultural Education Curriculum and Instruction Early Childhood Education First and Second Language Acquisition |
| url | https://fount.aucegypt.edu/etds/2396 https://fount.aucegypt.edu/context/etds/article/3445/viewcontent/Mona_Ahmed_KamarElZaman_Thesis.pdf |
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