Particular English language learners have a need to demonstrate high levels of accuracy in their written and spoken language production. Dynamic corrective feedback (dynamic CF) has been shown to facilitate L2 learner written accuracy attainment through providing manageable, meaningful, timely and constant feedback on authentic and frequent written language production. The research of this thesis examined the benefits of altering the dynamic CF model to be responsive to students' spoken production rather than solely their written production and measured the impact this adaptation would have on the established benefits of the instructional strategy on students' gains in written accuracy. The study also looked at the impact of both forms of dynamic CF on students' attainment of written complexity, fluency, and lexical development. The study included two groups of students whose language proficiency ranged from intermediate-low to advanced-mid who were studying English for academic purposes in an intensive English language program. These students participated in a one-semester Linguistic Accuracy course. Half of the students received the traditional form of dynamic CF in which they received feedback on only their written production, and the other half received a modified version of dynamic CF that provided students with feedback on only their spoken production. Before and after the treatment, samples of students' written production were collected through a thirty-minute essay test. These writing samples were analyzed for accuracy, fluency, complexity, and lexical development. Changes in each of these variables for both groups were contrasted using a mixed-model repeated measure Analysis of Variance (ANOVA). These tests revealed that there was not a significant difference in terms of the changes in accuracy or lexical development between the two groups; however, participants receiving the modified variation of dynamic CF did perform significantly better on the measurement of written complexity. Also, lower proficiency students receiving the modified version of dynamic CF did significantly better on the measurement of written fluency than students of a similar proficiency receiving the traditional form.