Through a review of the literature on mathematical learning disabilities (MLD) and low achievement in mathematics (LA) we have proposed a model classifying mathematical skills involved in learning mathematics into four domains (Core number, Memory, Reasoning, and Visual-spatial). In this paper we present a new experimental computer-based battery…

In the research and professional literature, there are at least four lines of inquiry around mentoring: perceptions of successful mentoring in general, mentoring of doctoral dissertations in particular, mentoring specific to the online environment, and relative importance of mentoring behaviors. In each case, particular qualities that make for…

Proposes random-effects regression model for analysis of clustered data. Suggests model assumes some dependency of within-cluster data. Model adjusts effects for resulting dependency from data clustering. Describes maximum marginal likelihood solution. Discusses available statistical software. Demonstrates model via investigation involving…

Discusses precision and recall in information science and proposes a new model based on fractal geometry for clusters of relevant documents. Search strategies for retrieving a group of relevant documents are reviewed; fractal sets and chaotic processes are described; and the new model is explained. (Contains 43 references.) (LRW)