This meta-analysis offers a snapshot of thirty-five years (1980–2015) of research on instructed second language acquisition (ISLA). Fifty-four empirical studies involving a total of 5,051 second language learners – sampled from six applied linguistics journals, Applied Linguistics, Language Learning, Language Teaching Research, The Modern Language Journal, Studies in Second Language Acquisition, and TESOL Quarterly – were aggregated for the effects of second language (L2) instruction, yielding an overall large effect size, g = 1.06, 95 % CI = 0.84−1.29. Data were further analysed to identify factors that can modulate the efficacy of instruction. While a minor difference was detected between explicit and implicit instruction, statistically significant effects were found for modes of outcome measures, learners’ onset L2 proficiency, research settings, and intensity of instruction.
Prevalence, determinants, and effects of food insecurity among Middle Eastern and North African migrants and refugees in high-income countries: A systematic review
Issues related to poverty and income inequality in high-income countries have led to food insecurity among some population groups, such as migrants and refugees. While there are some studies on the experience of some migrant groups (and other subpopulations), little is known about food security among Middle Eastern and African migrants and refugees. This systematic…