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ABSTRACT The process approach to writing instruction is one of the most popular methods for teaching writing. The authors conducted meta-analysis of 29 experimental and quasi-experimental studies conducted with students in Grades 1–12 to examine if process writing instruction improves the quality of students’ writing and motivation to write. For students in general education classes, process writing instruction resulted in a statistically significant, but relatively modest improvement in the overall quality of writing (average weighted effect size ES = 0.34). Variation in ES was not related to grade, reliability of the writing quality measure, professional development, genre assessed, or quality of study. The process writing approach neither resulted in a statistically significant improvement in students’ motivation nor enhanced the quality of struggling writers’ compositions.
Graham et al. (2011) studied this question.