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…

Efficiency in reading component skills is crucial for reading comprehension, as efficient subprocesses do not extensively consume limited cognitive resources, making them available for comprehension processes. Cognitive efficiency is typically measured with speeded tests of relatively easy items. Observed responses and response times indicate the…

Despite historical emphasis on "specific" learning disabilities (SLDs), academic skills are strongly correlated across the curriculum. Thus, one can ask how specific SLDs truly are. To answer this question, we used bifactor models to identify variance shared across academic domains (academic "g"), as well as variance unique to…

Students often feel time pressure when taking tests, and students with disabilities are sometimes given extended time testing accommodations, but little research has been done on the factors that affect students' test-taking speed. In the present study, 253 students at two colleges completed measures of processing speed, reading fluency, and…

Many studies of school achievement find a significant association between reading and arithmetic achievement. The magnitude of the association varies widely across the studies, but the sources of this variation have not been identified. The purpose of this paper is to examine the magnitude and determinants of the relation between arithmetic and…

Investigates whether the Nelson-Denny Reading Test's time restrictions may bias the performances of marginal students. Finds that the Nelson-Denny scores alone may provide biased measures of reading ability. Recommends that test makers develop extended time norms. (MG)

Scores from the Stanford Achievement Tests administered to 50,000 students in Palm Beach County, Florida, were studied in order to determine whether the speeded nature of the reading comprehension subtest was related to inconsistencies in the score profiles. Specifically, the probable effect of random guessing was examined. Reading scores were…

Eighty-five fourth- and eighth-grade learning disabled students whose individualized education plans specified untimed achievement testing were tested with the Reading Comprehension subtest of the Iowa Tests of Basic Skills, either according to the publisher's 40-minute time limit or with an extended time limit of 2 hours, 30 minutes. Results were…

A series of three studies was conducted to determine the effects of testing time above or below the recommended time on results of standardized achievement tests with a sample across all three experiments of 1,219 fifth graders in 59 classrooms in Lansing, Michigan. The first two studies considered the effects of increased time; the third explored…

This study is the second in a series designed to explore the probable consequences of exceeding the prescribed time limits in the administration of standardized achievement tests. This study considered whether the test user could apply norms that accompany the test if departures were made from established time limits, and whether increased testing…