Clustering is one of the most common data mining tasks, used frequently for data organization and analysis in various application domains. Traditional machine learning approaches to clustering are fully automated and unsupervised where class labels are unknown a priori. In real application domains, however, some "weak" form of side…

This discussion paper compares and contrasts "inductive" and "deductive" research approaches as described by Trochim (2006) and Plano Clark and Creswell (2007). It also examines the "exploratory" and "confirmatory" approaches by Onwueghuzie and Leech (2005) with respect to the assumption each holds about the nature of knowledge. The paper starts…

Convexity-based measures of shape compactness provide an effective way to identify irregularities in congressional district boundaries. A low convexity coefficient may suggest that a district has been gerrymandered, or it may simply reflect irregularities in the corresponding state boundary. Furthermore, the distribution of population within a…

First-year physics laboratories are often driven by a mix of goals that includes the illustration or discovery of basic physics principles and a myriad of technical skills involving specific equipment, data analysis, and report writing. The sheer number of such goals seems guaranteed to produce cognitive overload, even when highly detailed…

DataToText is a project developed where the user communicates the relevant information for an analysis and DataToText computer routine produces text output that describes in words, tables, and figures the results from the analyses. Two extended examples are given, one an example of a moderator analysis and the other an example of a dyadic data…

Aspiring school leaders rarely emerge from their principal preparation programs fully ready for the challenges that await them as new administrators, with much evidence revealing the need for continued mentoring and professional development. The author developed graduate course content that taught students the knowledge, skills and dispositions of…

This article explores the nature of the experiential data used in reflective learning, reflective practice and ipsative research in higher education. Much of what has been written about experiential learning has focused on the nature of the reflective process. By contrast, this article explores the nature of the experiential data that underpins…

The purpose of this study was to examine how school psychologists implemented the problem-solving consultation process within a computer-simulated school environment. Four school psychologists were recruited to complete three simulated consultation cases. The school environment was computer generated and all of the teachers and target students…

Many self-studies focus on an individual or several teacher educators. Although there have been self-studies undertaken by teacher education administrators, there is relatively little research that focuses specifically on an administrator's program development work in teacher education. This self-study examines one teacher education…

In this paper we explored text production differences in an expository text production task between writers who looked mainly at the keyboard and writers who looked mainly at the monitor. Eye-tracking technology and keystroke-logging were combined to systematically describe and define these two groups in respect of the complex interplay between…

In this study participants were asked to describe pictured events in one type-written sentence, containing one of two different syntactic structures (subordinated vs. coordinated subject noun phrases). According to the hypothesis, the larger subordinated structure (one noun phrase including a second, subordinated, one) should be cognitively more…

Purpose: The purpose of this study was to examine whether different measures of oral reading fluency relate differentially to reading comprehension performance in two samples of second-grade students: (a) students who evidenced difficulties with nonsense-word oral reading fluency, real-word oral reading fluency, and oral reading fluency of…

Einstein et al. (2005) predicted no cost to an ongoing task when a prospective memory task met certain criteria. Smith, Hunt, McVay, and McConnell (2007) used prospective memory tasks that met these criteria and found a cost to the ongoing task, contrary to Einstein et al.'s prediction. Einstein and McDaniel (2010) correctly noted that there are…

Prior to 1997, managing school attendance was the sole responsibility of the Department for Education and Skills (DfES). Since devolution, responsibility for school attendance has resided with each of the four UK-wide administrations. These are the Department for Children, Schools and Families (DCSF) in England; the Scottish Executive Education…

This article provides a conceptual introduction to the issues surrounding the analysis of clustered (nested) data. We define the intraclass correlation coefficient (ICC) and the design effect, and we explain their effect on the standard error. When the ICC is greater than 0, then the design effect is greater than 1. In such a scenario, the…