摘要：The present study tracked the development of general measures of complexity, accuracy and fluency (CAF) , and specific measures of accuracy and complexity in the writing s of two EFL learners writing individually, and those of two pairs of EFL learners writing in pairs within the framework of dynamic systems theory . The individuals and the pairs were similarly asked to do 7 tasks during a semester. T he learners' developmental pathways a s well as the differences between individuals and pairs in terms of general and specific measures of CAF across the 7 tasks w ere depicted through graphs. Results indicated that the performan ce of learn ers in each of the measures was non - linear during the semester. Moreover, concerning general measures of CAF, learners writing individually outperformed in terms of fluency and complexity features. However, no clear distinction emerged in terms of general accuracy measures of their writings . Furthermore, d evelopment of general and specific accuracy measures in the writings was consi s tent . However, although it was found that the learners writing individually outperformed in terms of general measur e of complexity, this developmental pattern was not evident in their performance in terms of specific complexity measures.
关键词：Accuracy; Fluency; Complexity; Development; Dynamic Systems Theory
