Research studies in Educational Data Mining (EDM) often involve several variables related to student learning activities. As such, it may be necessary to run multiple statistical tests simultaneously, thereby leading to the problem of multiple comparisons. The Benjamini-Hochberg (BH) procedure is commonly used in EDM research to address this…

Interval estimation of intraclass correlation coefficients in hierarchical designs is discussed within a latent variable modeling framework. A method accomplishing this aim is outlined, which is applicable in two-level studies where participants (or generally lower-order units) are clustered within higher-order units. The procedure can also be…

A quiet methodological revolution, a modeling revolution, has occurred over the past several decades, almost without discussion. In contrast, the 20th century ended with contentious argument over the utility of null hypothesis significance testing (NHST). The NHST controversy may have been at least partially irrelevant, because in certain ways the…

The amount of time, effort, and money expended in pursuit of a college degree makes it important that students choose a university that is a good fit for them. Unfortunately students often determine whether a university is a fit for them through trial and error. This research investigated student-university fit and its relationship with…

As anyone who has taught or taken a statistics course knows, statistical calculations can be tedious and error-prone, with the details of a calculation sometimes distracting students from understanding the larger concepts. Traditional statistics courses typically use scientific calculators, which can relieve some of the tedium and errors but…

Organizing refers to methods of distributing physical and symbolic tasks among multiple agents in order to achieve goals. My dissertation investigates the dynamics of organizing in hybrid information processing systems that incorporate both humans and computers. To explain the behavior of these hybrid systems, I develop and partially test a theory…

The number of project failures and those projects completed over cost and over schedule has been a significant issue for software project managers. Among the many reasons for failure, inaccuracy in software estimation--the basis for project bidding, budgeting, planning, and probability estimates--has been identified as a root cause of a high…

The fields of pattern recognition and machine learning are on a fundamental quest to design systems that can learn the way humans do. One important aspect of human intelligence that has so far not been given sufficient attention is the capability of humans to express when they are certain about a decision, or when they are not. Machine learning…

Prior research has established that peer tutors can benefit academically from their tutoring experiences. However, although tutor learning has been observed across diverse settings, the magnitude of these gains is often underwhelming. In this review, the authors consider how analyses of tutors' actual behaviors may help to account for variation in…

Stresses the importance of methodology and some of its more stubborn problems. (Editor/RK)

Reports on methods devised to test the strategic-contingencies theory of intraorganizational power which hypothesizes that the power of subunits results from contingent dependences among them created by unspecified combinations of coping with uncertainty. (Author)

Three critical issues in the design and analysis of evaluation studies suggested at the conference are (1) the univariate versus multivariate dependent variable studies, (2) the choice of a response surface design over the conventional fixed model, and (3) the tendency to interpret every study as if it were being done for the first time. Taking…

American Indian students were divided into three treatment groups to test the hypothesis that: the students who receive instruction using visual communications method will do significantly better than the students who receive instruction in the same concepts orally or through reading a text. (JC)

Numerous investigations show that most school science teaching, in Spain and elsewhere, implicitly transmits an inductivist and very stereotyped view of science and conveys an unrealistic image of scientific work. We present some results of an investigation with fourth-level Spanish secondary education students (15 year olds) who were taught…

IN A STUDY OF GRADING METHODS PRACTICED BY TEACHERS OF 103 SIXTH GRADE CLASSES, IT WAS FOUND THAT USE OF THE I.Q. SYSTEM AS A BASIS FOR ACHIEVEMENT GRADING PRODUCES APPROXIMATELY THE SAME RESULTS AS PERMITTING TEACHERS TO USE THEIR OWN JUDGMENT IN ASSIGNING ACHIEVEMENT GRADES. TWO HYPOTHESES WERE TESTED--(1) THE AVERAGE I.Q. LETTER GRADE OF A…