In high-stakes writing assessments, rater training in the use of a rating scale does not eliminate variability in grade attribution. This realisation has been accompanied by research that explores possible sources of rater variability, such as rater background or rating scale type. However, there has been little consideration thus far of…

This study aimed to comprehensively investigate the impact of a word-processor on an ESL writing assessment, covering comparison of inter-rater reliability, the quality of written products, the writing process across different testing occasions using different writing media, and students' perception of a computer-delivered test. Writing samples of…