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…

In preparation for online administration of the ACT® test, ACT conducted studies to examine the comparability of scores between online and paper administrations, including a timing study in fall 2013, a mode comparability study in spring 2014, and a second mode comparability study in spring 2015. This report presents major findings from these…

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…

This study investigated the effect of diagram formats on performance on geometry items in order to determine whether certain examinees are affected by different item formats and whether such differences arise from the different intellectual demands made by these formats. Thirty-two experimental, multiple-choice geometry items were administered in…

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…