The purpose of this study was to investigate the effect of word processing on the quality of written expression of students with learning disabilities identified in the area of written expression. A examination of existing research revealed that most studies do not focus on word processing independent of writing instruction. Therefore, the consensus among researchers that word processors make a difference is limited by the influence of instruction within the research setting. Therefore, this study sought to determine the impact made solely by word processing by controlling for instruction. The 75 students who participated in the study represented three groups--students with learning disabilities identified in the area of written expression (LD-W), students with learning disabilities identified in an area other than written expression (LD-O), and general education students (NA). Each student completed four writing samples: (a) descriptive - handwritten, (b) informative - handwritten, (c) descriptive - word processed, and (d) informative - word processed. The writing samples were scored according to the TOWL-3 on the three Spontaneous Composite subtests (e.g., Contextual Conventions, Contextual Language, and Story Construction). In addition, Word Perfect 6.1- Grammatik was used to determine the number of syllables, words, and sentences in each writing sample. A multivariate …