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Coventry, William; Anton-Mendez, Ines; Ellis, Elizabeth M.; Levisen, Christina; Byrne, Brian; van Daal, Victor H. P.; Ellis, Nick C. – Language Learning, 2012
We present one of the first behavior-genetic studies of individual differences in school students' levels of achievement in instructed second language acquisition (ISLA). We assessed these language abilities in Australian twin pairs (maximum N pairs = 251) by means of teacher ratings, class rankings, and self-ratings of proficiency, and used the…
Descriptors: Twins, Second Language Learning, Genetics, Etiology