School of Languages and Linguistics - Theses

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Subject: English language × Subject: study and teaching × Author: Lumley, Thomas James Nathaniel ×

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    The process of the assessment of writing performance: the rater's perspective
    Lumley, Thomas James Nathaniel ( 2000)
    The primary purpose of this study is to investigate the process by which raters of texts written by ESL learners make their scoring decisions. The context is the Special Test of English Proficiency (step), used by the Australian government to assist in immigration decisions. Four trained, experienced and reliable step raters took part in the study, providing scores for two sets of 24 texts. The first set was scored as in an operational rating session. Raters then provided think-aloud protocols describing the rating process as they rated the second set. Scores were compared under the two conditions and comparisons made with the raters' operational rating behaviour. Both similarities and differences were observed. A coding scheme developed to describe the think-aloud data allowed analysis of the sequence of rating, the interpretations the raters made of the scoring categories in the analytic rating scale, and the difficulties raters faced in rating. Findings demonstrate that raters follow a fundamentally similar rating process, in three stages. With some exceptions, they appear to hold similar interpretations of the scale categories and descriptors, but the relationship between scale contents and text quality remains obscure. A model is presented describing the rating process. This shows that rating is at one level a rule-bound, socially governed procedure that relies upon a rating scale and the rater training which supports it, but it retains an indeterminate component as a result of the complexity of raters' reactions to individual texts. The task raters face is to reconcile their impression of the text, the specific features of the text, and the wordings of the rating scale, thereby producing a set of scores. The rules and the scale do not cover all eventualities, forcing the raters to develop various strategies to help them cope with problematic aspects of the rating process. In doing this they try to remain close to the scale, but are also heavily influenced by the complex intuitive impression of the text obtained when they first read it. This sets up a tension between the rules and the intuitive impression, which raters resolve by what is ultimately a somewhat indeterminate process. In spite of this tension and indeterminacy, rating can succeed in yielding consistent scores provided raters are supported by adequate training, with additional guidelines to assist them in dealing with problems. Rating requires such constraining procedures to produce reliable measurement.