The effects of semantic and syntactic complexity on the reading comprehension of content-area prose were investigated among 92 adolescents with learning disabilities. Subjects who read passages that had been modified syntactically or both syntactically and semantically exhibited improved comprehension. Semantic modifications alone did not affect…

Old and young adults participated in two experiments involving a standardized, hierarchically organized event. In interviews that assessed memory of the event, older subjects reported fewer event actions than did the young. Memory of old and young was influenced similarly by the hierarchical structure of the event. (RH)

This study of 114 children between seven and nine years used a procedure for directly observing child-produced and experimenter-produced strategies to examine the transitional period of strategy development. Findings revealed gradual changes in children's ability to produce, and to benefit from, a strategy of selective attention. (RH)

Violations of item unidimensionality on language tests produced distorted estimates of person ability, and violations of person unidimensionality produced distorted estimates of item difficulty. The Bejar Method was sensitive to such distortions. (Author)

The comparability of scores on test forms that are constructed through examinee item choice is examined in an item response theory framework. The approach is illustrated with data from the College Board's Advanced Placement Test in Chemistry taken by over 18,000 examinees. (SLD)

Discusses subject searching and describes a study that evaluated the match between the named terms and the expected subject headings by examining the subject search terms generated by students. Highlights include nonsemantic properties in evaluating search terms, including concreteness, complexity, and syndeticity; and metacognitive naming skills…

Sixty elementary students with learning disabilities were interviewed about parallel domains of uncontested and contested knowledge on the topic of space, including questions of morality and questions of empirical law. Students clearly distinguished between uncontested and contested knowledge, suggesting that they are capable of working with…

Twenty-two subjects with autism were tested on three perspective-taking tasks. Subjects were successful on two tasks that required them to make relatively direct connections between eating and hunger or visual access and knowledge. They failed a task which used stimuli of a more transient nature and less predictable reactions of the protagonists.…

Reliabilities and information functions for percentile ranks and number-right scores were compared using item response theory, modeling standardized achievement tests. Results demonstrate that situations exist in which the percentage of items known by examinees can be accurately estimated, but the percentage of persons falling below a given score…

A study was conducted with 782 elementary school students to determine whether the Homan-Hewitt Readability Formula could identify the readability of a single-sentence test item. Results indicate that a relationship exists between students' reading grade levels and responses to test items written at higher readability levels. (SLD)

Reports on a project which developed a measure of levels of difficulty of reference questions handled by the California Interlibrary Reference Referral Network, and identified indicative measures that would reliably stand for the concept of difficulty. Correlations of predictive difficulty and actual difficulty are discussed. (nine references)…

The readability, interest level, and content of 18 current college textbooks on mainstreaming were assessed. Results revealed that readability and interest level were comparable among the texts. More variation was found in the contents of the texts. A table lists 16 topics and the degree to which each is covered in the textbooks. (DB)

Analysis of the Bracken Basic Concept Scale (BBCS) indicated that all subtests except two (Quantity and Time) showed statistically significant correlations between item difficulty and frequency of concept words. Administration of the BBCS to 36 first graders revealed that most concept words showed expected item discrimination indices. (Author/JDD)

The hypothesis that a task that increases in complexity (increasing its correlation with a central measure of intelligence) does so by increasing its dimensionality by tapping individual differences or another variable was supported by findings from 46 adults aged 20-70 years performing a mental counting task. (SLD)

An associative model of serial learning is described based on the assumption that the effective stimulus for a serial-list item is generated by adaptation-level coding of the item's ordinal position. How the model can generate predictions of aspects of serial-learning data is illustrated. (SLD)