"working out" the longitudinal development and factors that influence phrasal verb knowledge for study-abroad learners in the UK

A phrasal verb (PV) is a type of formulaic language that is ubiquitous in informal English discourse but notoriously challenging for English language learners. With many learners struggling to develop knowledge of formulaic language, this study investigated whether they make measurable PV gains over time and which factors in a study-abroad environment facilitated the development of PVs. Seventy-five mixed-L1 foundation students in the UK were tracked over the first two terms in an academic year. They completed a productive PV test, a receptive PV test, an Updated Vocabulary Levels Test, a language contact questionnaire, and a social network survey when studying abroad. Using descriptive statistics, paired-samples t-tests, and mixed-effects modelling, the findings indicate that the participants made only small gains in PV knowledge in two terms of study abroad. Interestingly, they made larger gains in productive knowledge than receptive knowledge, suggesting that they consolidated existing knowledge more than acquiring new PVs. Overall vocabulary knowledge, PV corpus frequency, and language contact significantly predicted PV knowledge, while semantic transparency and L2 social networks did not. Overall vocabulary knowledge and L2 social networks predicted PV gains. This study reveals that the developmenet of PV knowledge is relatively slow and incremental during study abroad. Thus, high-quality L2 interaction may be necessary for international students to develop PV knowledge in such contexts.