We report two experiments examining the role of concreteness and word phonological neighborhood characteristics on immediate serial recall. In line with previous findings concreteness, word frequency, and larger neighborhood size are associated with better serial recall. Both concreteness and word neighborhood size were also positively associated…

The purpose of this article is to summarize what is generally known about talent development and schooling by stating some propositions about the way such programs are structured. This article sets the stage for a series of stories of programs that attempt to address the challenge of talent development in diverse low-income populations. The…

To test the hypothesis that level of neural complexity explain the relative level of performance and brain activity in autistic individuals, available behavioural, ERP and imaging findings related to the perception of increasingly complex auditory material under various processing tasks in autism were reviewed. Tasks involving simple material…

Computerized multistage testing (MST) designs require sets of test questions (testlets) to be assembled to meet strict, often competing criteria. Rules that govern testlet assembly may dictate the number of questions on a particular subject or may describe desirable statistical properties for the test, such as measurement precision. In an MST…

This study examined the effect of graphic organizers on the comprehension of a health education brochure text and compared subjective with objective comprehension measures. Graphic organizers are graphical depictions of relations among concepts in a text. Participants read a brochure text about asthma with and without these organizers, and…

This study examined initial evidence of changes in fit to a unidimensional model for some language tests at multiple ability levels. Seven data sets were analyzed using the first phase of exploratory factor analysis: principal component eigenvalue extraction. Each data set is analyzed at varying n-sizes: whole group; random subsample; and five…

Several exploratory analyses of the fifths data generated by Test of English as a Foreign Language (TOEFL) item analyses were developed in order to evaluate the effects of options on the discriminability of difficult items and to identify difficult items with low, unreliable biserials that had been rejected by test developers, but for which…

This study was designed to compare the accuracy of three commonly used ability estimation procedures under the graded response model. The three methods, maximum likelihood (ML), expected a posteriori (EAP), and maximum a posteriori (MAP), were compared using a recovery study design for two sample sizes, two underlying ability distributions, and…

Modern applications of computerized adaptive testing (CAT) are typically grounded in item response theory (IRT; Lord, 1980). While the IRT foundations of adaptive testing provide a number of approaches to adaptive test scoring that may seem natural and efficient to psychometricians, these approaches may be more demanding for test takers, test…

Because of the lack of error-free, on-task performance by young children, cognitive modeling has not generally been considered an appropriate technique for characterizing computer use by young children. It is argued that cognitive modeling can be a useful strategy for organizing data on children's performance when the domain being studied is…

This study is the first stage of a wider enquiry into alternative ways of assessing the readability of specialist texts. The interest in assessing these texts arose from the need to grade 60 medical journal articles for an individualized English-as-a-Foreign-Language reading scheme for doctors. The study reports on an investigation of subjective…

Multiple group factor analysis is described and illustrated through a simulation involving 5,000 examinees. The estimation process of the group factors were implemented using the TESTFACT program of Wilson and others (1987). Group factor analysis is described as a special case of confirmatory factor analysis. Group factors can be computed based on…

American education has long equated reading with the narrower notion of literacy. Such an approach bypasses the concept of "difficulty," or the placing of ideas into question. The educational system has resisted adoption of a broader view of reading, because: (1) anything difficult is viewed as elitist and undemocratic; and (2) the…

Increasingly over the past several years, the reading of literature has been viewed as a social interpretive process. Conceptions of reading have changed from a largely cognitive process of print decoding to a socially situated one of understanding and appropriating a variety of discourse and text conventions. "Difficulty" is the result…

Researchers have suggested two models of risk preference to account for subjects' preference for tasks of moderate difficulty. The affective model proposes that pride of success and shame of failure are responsible for the observed preference. The cognitive model suggests preference for tasks of moderate difficulty because they are the most…