The Dale-Chall Readability Formula and the Fry Readability Graph were used to analyze passages of Plato's "Parmenides," a notoriously difficult literary piece. The readability levels of the text ranged from fourth to eighth grade (Dale-Chall) and from sixth to tenth grade (Fry), indicating the limitations of the readability tests. (DF)

Properties of dichotomous Guttman-scalable items are described. Both the elements and eigenvalues of the Pearson correlation matrix of such items can be expressed as simple functions of the number of items if the score distribution is uniform and there is an equal number of items at each difficulty level. (SLD)

Community involvement in music making is a time-honored tradition that is experiencing a joyful resurgence. The word "community" can mean both an area of geography as well as a group of people coming together with a sense of purpose. In creating a community chorus, a key to its success is to place more emphasis on the second aspect. Go beyond…

When a visual search task is very difficult (as when a small feature difference defines the target), even detection of a unique element may be substantially slowed by increases in display set size. This has been attributed to the influence of attentional capacity limits. We examined the influence of attentional capacity limits on three kinds of…

Research on teaching and learning indicates that all students should be provided with programs, services, and teachers that engage them in rigorous academic work and promote deep disciplinary knowledge and higher order thinking skills (Walqui, 2006; Sanders & Rivers, 1996). Despite research findings on the importance of high quality teachers…

In many academic areas, students' success depends upon their ability to envision and manipulate complex multidimensional information spaces. Fields in which students struggle with mastering these types of representations include (but are by no means limited to) mathematics, science, medicine, and engineering. There has been some educational…

The purpose of the present study is to examine the language characteristics of a few states' large-scale assessments of mathematics and science and investigate whether the language demands of the items are associated with the degree of differential item functioning (DIF) for English language learner (ELL) students. A total of 542 items from 11…

Purpose: The purpose of this paper is to consider how simulations are increasingly used in training programs for the development of skills such as leadership. However, the requirements of leadership development go beyond the development of task specific procedural knowledge or expertise that simulations have typically been used to develop.…

Training and investing teachers at all career levels in student-centered practices is widely recognized as a significant challenge. Various studies document the failure of student-centered teaching practices to take hold in K-12 mathematics classrooms in significant ways, including collaborative work; problems that are cognitively demanding or…

The present study examined two key aspects of young children's ability to explain human behaviour in a mentalistic way. First, we explored desires that are of a level of difficulty comparable with that of false beliefs. For this purpose, the so-called "alternative desires" were created. Second, we examined how children's psychological…

Boys identified as learning-disabled gifted or twice exceptional, at two different grade levels (5th or 6th grades, and 11th or 12th grades), were asked to read a history text with unknown vocabulary words, internal inconsistencies, and prior knowledge violations inserted to make immediate comprehension difficult. The students were asked to read…

We have designed, developed, and validated a 25-question Genetics Concept Assessment (GCA) to test achievement of nine broad learning goals in majors and nonmajors undergraduate genetics courses. Written in everyday language with minimal jargon, the GCA is intended for use as a pre- and posttest to measure student learning gains. The assessment…

This paper summarizes difficulties that chemistry students at all levels commonly exhibit when translating, manipulating, and interpreting mathematical expressions that contain logarithms, and offers approaches that the authors have found useful to help students overcome such difficulties. The online supplement provides problem sets created by the…