The validity of inferences based on achievement test scores is dependent on the amount of effort that examinees put forth while taking the test. With low-stakes tests, for which this problem is particularly prevalent, there is a consequent need for psychometric models that can take into account differing levels of examinee effort. This article…

Birnbaum's three-parameter logistic function has become a common basis for item response theory modeling, especially within situations where significant guessing behavior is evident. This model is formed through a linear transformation of the two-parameter logistic function in order to facilitate a lower asymptote. This paper discusses an…

The grade on a question of an answer-until-correct test is a function of the number of responses needed to find the correct response. This note considers how to assign credit for the number of responses needed to find the correct response. (Author/MP)

Discusses answer justification, a technique that allows students to convert multiple-choice items perceived to be "tricky" into short-answer essay questions. Convincing justifications earn students credit for missed items. The procedure is reported to be easy to administer and very popular among students. (Author/GEA)

Speededness refers to the extent to which time limits affect test takers' performance. With regard to the Law School Admission Test (LSAT), speededness is currently measured by calculating the proportion of test takers who do not reach each item on the test. These proportions typically increase slightly toward the end of the test, indicating that…

The three-parameter logistic model by Birnbaum for the multiple-choice item in the latent trait theory is considered with respect to the item response information function and the unique maximum condition. (Editor/RK)

Scores within the chance range are differentiated, "uninterpretable" scores being those that demonstrate randomness (broadly defined) by failing to achieve typical levels of correlation with group-determined difficulty. The relevant literature is reviewed. Finally, randomness and uninterpretability are examined in light of the…

Reviews materials in the ERIC data base that can be used to teach students test-wiseness skills such as cue- using strategies, time using, error avoidance, guessing, deductive reasoning, answering analogies, and answering multiple choice questions. (MKM)

The distribution theory underlying corrections for guessing is analyzed, and the probability distributions of the random variables are derived. The correction in grade, based on random guessing of unknown answers, is compared with corrections based on educated guessing. (Author/MH)

Responses to a 50-item, 4-choice test were simulated for 1,000 examinees under conventional formula-scoring instructions. Based on 192 simulation runs, formula scores and expected formula scores were determined for each examinee allowing and not allowing for inappropriate omissions. (TJH)

Examination of a test's internal structure can be used to identify what domains or dimensions are being measured, identify relationships between the dimensions, provide evidence for hypothesized multidimensionality and test score interpretations, and identify construct-irrelevant variance. The purpose of this research is to provide a…

Multiple-choice tests are generally scored using a conventional number right scoring method. While this method is easy to use, it has several weaknesses. These weaknesses include decreased validity due to guessing and failure to credit partial knowledge. In an attempt to address these weaknesses, psychometricians have developed various scoring…

Contrary to common belief, reliability estimates of number-right multiple-choice tests are not inflated by speededness. Because examinees guess on questions when they run out of time, the responses to these questions show less consistency with the responses of other questions, and the reliability of the test will be decreased. The surprising…