Means and Standard Deviations of Pre- and Posttest Essay Scores by Group (on a Scale of 1-6)
| Writing Matters Group (n = 193) | Comparison Group (n = 106) | |||
|---|---|---|---|---|
| Pre- | Post- | Pre- | Post- | |
| Holistic | 3.41 (.89) | 3.37 (.82) | 3.60 (.95) | 3.49 (.81) |
| Content | 3.47 (.92) | 3.40 (.87) | 3.63 (.97) | 3.51 (.82) |
| Structure | 3.24 (.90) | 3.26 (.89) | 3.44 (.91) | 3.36 (.89) |
| Stance | 3.50 (.91) | 3.46 (.92) | 3.70 (.95) | 3.57 (.90) |
| Sentence fluency | 3.45 (.91) | 3.45 (.90) | 3.63 (.98) | 3.49 (.91) |
| Diction | 3.35 (.88) | 3.31 (.83) | 3.46 (.96) | 3.32 (.82) |
| Conventions | 3.44 (1.02) | 3.46 (.94) | 3.59 (1.03) | 3.55 (.93) |
| Holistic | 3.41 (.89) | 3.37 (.82) | 3.60 (.95) | 3.49 (.81) |
| Content | 3.47 (.92) | 3.40 (.87) | 3.63 (.97) | 3.51 (.82) |
| Structure | 3.24 (.90) | 3.26 (.89) | 3.44 (.91) | 3.36 (.89) |
| Stance | 3.50 (.91) | 3.46 (.92) | 3.70 (.95) | 3.57 (.90) |
| Sentence fluency | 3.45 (.91) | 3.45 (.90) | 3.63 (.98) | 3.49 (.91) |
| Diction | 3.35 (.88) | 3.31 (.83) | 3.46 (.96) | 3.32 (.82) |
| Conventions | 3.44 (1.02) | 3.46 (.94) | 3.59 (1.03) | 3.55 (.93) |
Note: For each score type, only students with both pre- and posttest scores were included. Due to missing data, the numbers for each domain vary slightly; the n for structure and sentence fluency in the Writing Matters pretest is 192 and the n for the comparison group in the content pretest and stance and conventions posttest is 105.
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