This study introduces a novel differential item functioning (DIF) method based on propensity score matching that tackles two challenges in analyzing performance assessment data, that is, continuous task scores and lack of a reliable internal variable as a proxy for ability or aptitude. The proposed DIF method consists of two main stages. First,…

This paper reports the results of an analysis of the relationship between scorer behaviors and score variability. Thirty-six essay scorers were interviewed and asked to perform a think-aloud task as they scored 24 essays. Each comment made by a scorer was coded according to its content focus (i.e. appearance, assignment, mechanics, communication,…

Writing fits well within the realm of outcomes suitable for observation by performance assessments. Studies of the reliability of performance assessments have suggested that interrater reliability can be consistently high. Scoring consistency, however, is only one aspect of quality in decisions based on assessment results. Another is…

This paper presents a model of scored cognition that incorporates two types of mental models: models of performance (i.e., the criteria for judging performance) and models of scoring (i.e., the procedural scripts for scoring an essay). In Study 1, six novice and five experienced scorers wrote definitions of three levels of a 6-point holistic…

The paper examines an assessment method for measuring students' writing performance. Does Primary Trait Scoring reliably and validly accomplish the administrative, instructional, and evaluative purposes of the writing assessment? The Primary Trait Scoring guide has a few underlying principles: identification of qualities of effective writing;…

This survey of educators examined validity issues in Arizona's program of authentic assessment of written communication. The paper concludes that authentic measures lack meaningful standards. Major flaws were reported in the areas of "fairness,""transfer and generalizability,""content quality," and…