Smoothing techniques are designed to improve the accuracy of equating functions. The main purpose of this study is to compare seven model selection strategies for choosing the smoothing parameter (C) for polynomial loglinear presmoothing and one procedure for model selection in cubic spline postsmoothing for mixed-format pseudo tests under the…

The accuracy with which expert systems (ESs) score a new nonmultiple-choice free-response test item was investigated, using 734 high school students who were administered an advanced-placement computer science examination. ESs produced scores for 82 percent to 95 percent of the responses and displayed high agreement with a human reader on the…

Figural response items (FRIs) in science were administered to 347 fourth graders, 365 eighth graders, and 322 twelfth graders. Item and test statistics from parallel FRIs and multiple-choice questions illustrate FRIs' more difficult and more discriminating nature. Relevance of guessing to FRIs and diagnostic value of the item type are highlighted.…