Diagnostic Writing Assessment: The Development and Validation of a Rating Scale
The diagnostic assessment of writing is an important aspect of language testing which has often been neclected in the literature. However, it is an area which poses special challenges to practioners both in the classroom and in large-scale testing situations. This book presents a study which set out to develop and validate a rating scale specifically designed for the diagnostic assessment of writing in an academic English setting. The scale was developed by analysing a large number of writing performances produced by both native speakers of English and learners of English as an additional language. The rating scale was then validated using both quantitative and qualitative methods. The study showed that a detailed data-based rating scale is more valid and more useful for diagnostic purposes than the more commonly used impressionistic rating scale.
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Performance Assessment of Writing
Measuring Constructs and Constructing
Methodology Analysis of writing scripts
Results Analysis of writing scripts
Discussion Analysis of writing scripts
academic accuracy anaphoric argued aspects of writing average band levels box plots Candidate separation ratio chapter clauses cohesion construct validity context data description DELNA scale Dependent clauses described Descriptive statistics diagnostic assessment diagnostic tests discourse analytic measures English Language error-free t-units errors essays Exact agreement example existing scale factor factor analysis feedback Figure Firstly halo effect hedging devices holistic identified IELTS inter-rater reliability interviews investigated language learners levels of writing lexical complexity lexical words linking devices logit Mean SD number of words overall paragraphing parallel progression Phase pilot study point biserial correlation questionnaire Rasch model Rater point biserial Rater separation ratio rater training raters rated rating process relevant repair fluency scale categories score self-corrections sentence sequential progression showed spelling Table task test takers TOEFL trait scales types underused variable variance vocabulary whilst writer identity writing ability writing assessment writing scripts