How data are collected and how they are analyzed is typically described in the literature, but how the data are encoded is often not described in detail. In this paper, we discuss how data typically gathered in PER are encoded and how the choice of encoding plays a role in data analysis. We describe the kinds of data that are found when using…

Linguistic complexity of test items is one test format element that has been studied in the context of struggling readers and their participation in paper-and-pencil tests. The present article presents findings from an exploratory study on the potential relationship between linguistic complexity and test performance for deaf readers. A total of 64…

The study described in this paper is part of an effort to improve understanding of the science assessment of the National Assessment of Educational Progress (NAEP). It involved the coding of all the items in the 1996 NAEP science assessments, which included 45 blocks (15 each for grades 4, 8, and 12) and over 500 items. Each of the approximately…