Items with the highest discrimination parameter values in a logistic item response theory (IRT) model do not necessarily give maximum information. This paper shows which discrimination parameter values (as a function of the guessing parameter and the distance between person ability and item difficulty) give maximum information for the…

The relationship between test item characteristics and testing time was studied for a computer-administered licensing examination. One objective of the study was to develop a model to predict testing time on the basis of known item characteristics. Response latencies (i.e., the amount of time taken by examinees to read, review, and answer items)…

To help increase the understanding of sources of difficulty in test items, a study was undertaken to evaluate the effects of various aspects of prose complexity on the difficulty of achievement test items. The items of interest were those that presented a verbal stimulus followed by a question about the stimulus and a standard set of…

Previous studies have shown that, when administered a self-adapted test, a few examinees will choose item difficulty levels that are not well-matched to their proficiencies, resulting in high standard errors of proficiency estimation. This study investigated whether the previously observed effects of a self-adapted test--lower anxiety and higher…

Political and legislative pressures have posed a number of measurement issues and challenges to the development of sound, valid voluntary national tests (VNTs). This paper focuses on what appear to be the most difficult technical issues related to the VNT proposed by President Clinton in 1997. Technical issues refer to psychometric issues, as…

A "dynamic priority" theory of Chinese second language instruction is outlined and discussed. The theory focuses on five aspects of language instruction: spoken vs. written language; universality vs. particularity; cultural vs. linguistic tasks; performance vs. competence; and proficiency vs. achievement. A dynamic relationship is seen between the…

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.…

This article proposes two general instructional strategies that a course designer or materials writer may use to create a second language course that makes new demands on learners, yet contains feasible learning tasks. First, course designers can manipulate task components believed to determine task difficulty, components such as input text, the…

Research has demonstrated that the acquisition of English literacy skills is extremely difficult for many deaf students, that is, students with severe to profound hearing impairments. As a result, there has been a call for the development of bilingual and English-as-a-second-language programs for this population. This research review addresses…

The standardization of second language proficiency levels for university students in Germany is discussed. Problems with the current system, in which each university has developed its own program of study and proficiency certification, are examined and a framework for development of a unified language certificate for all universities is outlined.…

In this study, Vygotsky's theory of the interpersonal origin and cognitive-developmental function of children's private speech is outlined and compared with Piaget's view of egocentric speech, and some contemporary North American research on children's private speech is reviewed. For the study, 32 preschool-aged children were videotaped during two…

The comprehension processes of adult students solving two-step problems of comparison were studied using eye-movement experiments based on the assumption that eye fixations are synchronous with internal cognitive processes. Twenty university students each solved 24 two-step mathematical word problems of three sentences each with consistent…

According to item response theory (IRT), examinee ability estimation is independent of the particular set of test items administered from a calibrated pool. Although the most popular application of this feature of IRT is computerized adaptive (CA) testing, a recently proposed alternative is self-adapted (SA) testing, in which examinees choose the…

A study reexamined data from an earlier study of the effect of teacher questioning techniques on students' understanding of and responses to literature. Data were reexamined for instructional correlates of difficulty of recall and difficulty of depth of understanding. Subjects, 1,041 students in 58 eight-grade English classes in 16 midwestern…

A study examining the initial stages in the acquisition of the conditional system is reported. The objective was to discover how morphological productivity is related to the child's comprehension of the semantics of individual conditional types. Schachter's model of reality and unreality conditionals was used as a framework. Eight middle class,…