As testing programs transition from paper to online testing, they must study mode comparability to support the exchangeability of scores from different testing modes. To that end, a series of three mode comparability studies was conducted during the 2019-2020 academic year with examinees randomly assigned to take the ACT college admissions exam on…

Speeded tests set time limits so that few examinees can reach all items, and power tests allow most test-takers sufficient time to attempt all items. Educational achievement tests are sometimes described as "timed power tests" because the amount of time provided is intended to allow nearly all students to complete the test, yet this…

Many studies have demonstrated that testing students on to-be-learned materials can be an effective learning activity. However, past studies have also shown that some practice test formats are more effective than others. Open-ended recall or short answer practice tests may be effective because the questions prompt deeper processing as students…

Three mode comparability studies were conducted on the following Saturday national ACT test dates: October 26, 2019, December 14, 2019, and February 8, 2020. The primary goal of these studies was to evaluate whether ACT scores exhibited mode effects between paper and online testing that would necessitate statistical adjustments to the online…

Two studies examined the effect of making the correct answer of a multiple choice test item grammatically consistent with the item. American College Testing Assessment experimental items were constructed to investigate grammatical compliance to investigate grammatical compliance for plural-singular and vowel-consonant agreement. Results suggest…

Effects of item arrangement (easy-hard, uniform, and random), test anxiety, and sex on a 48-item multiple-choice mathematics test assembled from items of the American College Testing Program and taken by motivated upper level undergraduates and beginning graduate students were investigated. Four measures of anxiety were used: the Achievement Test…

In this paper a quadratic curve equating method for different test forms under a random-group data-collection design is proposed. Procedures for implementing this method and related issues are described and discussed. The quadratic-curve method was evaluated with real test data (from two 30-item subtests for a professional licensure examination…

This report builds on and extends existent research on population invariance to new tests and issues. The authors lay the foundation for a deeper understanding of the use of population invariance measures in a wide variety of practical contexts. The invariance of linear, equipercentile and IRT equating methods are examined using data from five…

Whether the shaping of test items can itself result in qualitative differences in examinees' comprehension of reading passages was studied using the Pearson-Johnson item classification system. The specific practice studied incorporated, within an item stem line, references that point the examinee to a specific location within a reading passage.…

Tables of specifications are used to guide test developers in sampling items and maintaining consistency from form to form. This paper is a generalizability study of the American College Testing Program (ACT) Achievement Program Mathematics Test (AAP), with the content areas of the table of specifications representing multiple dependent variables.…

The purpose of this study was to investigate the effect of using multidimensional items in a computer adaptive test (CAT) setting which assumes a unidimensional item response theory (IRT) framework. Previous research has suggested that the composite of multidimensional abilities being estimated by a unidimensional IRT model is not constant…

Writers of mathematics test items, especially those who write for standardized tests, are often advised to arrange the answer options in logical order, usually ascending or descending numerical order. In this study, 32 mathematics items were selected for inclusion in four experimental pretest units, each consisting of 16 items. Two versions…