This two-year longitudinal study tracks the extent of vocabulary attrition among Arabic-speaking English graduate teachers. Data were collected through pre-post tests of receptive and productive vocabulary knowledge. The results showed drastic attrition in vocabulary knowledge soon after the end of formal instruction followed by slight gain, although the gain was not quite back to the level of baseline achievement. Verbs and adjectives were more prone to attrition than nouns. The rate of attrition was greater for productive than receptive lexical knowledge. Interestingly, knowledge at peak attainment emerged as a predictor of attrition over time.Keywords: vocabulary attrition, EFL, KAU, retention, initial knowledge, baseline
The State of Foreign Language Attrition ResearchThere has been a great deal of research on various aspects of language acquisition including vocabulary in the last three decades, and as a result we have witnessed new insights being gained, hypotheses generated and evidence and counterevidence cited (Bogaards & Laufer, 2004;Coady & Huckin, 1997;Meara, 1980;Milton, 2009;Nation, 1990Nation, , 2001 Nation & Webb, 2011;Peters, 2013;Schmitt, 2008Schmitt, , 2010Tian & Macaro, 2012). However, there has been comparatively little research into lexical attrition specifically in the foreign language (FL) arena, describing key processes and how quickly or slowly lexical knowledge is forgotten. Yet, more recently attrition and retention of lexical knowledge by adults has received increased attention in the research literature (see Alharthi, 2012;Bahrick, 1984;de Bot & Weltens, 1995;Weltens, 1989). Previous empirical studies that have contributed significantly to the literature on FL attrition at the lexical level have been focused on situations where learners of English rarely use words they know after the conclusion of formal instruction (e.g. Abbasian & Khajavi, 2010;Bierling, 1990;Marefat & Rouhshad, 2007). However, equally interesting is attrition in situations where some possibly limited use is made of the FL after formal instruction has ceased.To take a concrete example, the type of exposure to English for King Abdulaziz University (KAU) graduate students in Saudi Arabia is very often mainly -and in some cases even entirely -confined to the classroom. As a result, this limited exposure is likely to lead to lexical attrition over time. This would create a challenge for EFL majors who are supposed to build up a much larger lexical repertoire which then can help them with their teaching of English. By extension, it is possible that they may find it hard to retain the bulk of their vocabulary knowledge upon leaving KAU and therefore will start to lose their vocabulary. Thus, it appears that once students finish their formal study of English, they are less likely to use the target language. The aim of this research then is to measure the extent of attrition and retention of vocabulary knowledge over time among EFL graduate students. The study focuses on one of the four settings of attrition outli...