Variability as predictor in L2 writing proficiency

Lowie and Verspoor (2019) had an unexpected finding in their work Individual Differences the Ergodicity Problem: The main predictor for proficiency gains 22 beginning Dutch learners of English over one year was not traditional individual difference (ID) factors, but degree variability that occurred time. We speculate might stand “investment” as students strive excellent product at time, are able to reach quite same level next current paper sets out see whether findings can be replicated with a different population finer-tuned measures. writing L1 Chinese adults university measured 12 texts scored holistically academic year. L2 operationalized coefficient variation (CoV), which calculated standard deviation divided by mean holistic scores. ID factors were motivation, language aptitude, working memory. follows: None predicted final nor gains, CoV did. implications these discussed.