The Vanishing Tetrad Test (VTT) (Bollen, Lennox, & Dahly, 2009; Bollen & Ting, 2000; Hipp, Bauer, & Bollen, 2005) is an extension of the Confirmatory Tetrad Analysis (CTA) proposed by Bollen and Ting (Bollen & Ting, 1993). VTT is a powerful tool for detecting model misspecification and can be particularly useful in cases in which…

Problem Statement: Within the frame of learning management systems, this study develops a concept focused discussion environment and validates the effectiveness of this environment's use through an experimental study. Purpose of the Study: Online discussion forums, which are commonly used in learning management systems (LMS), can negatively…

This article investigates the role of play and playlike activities (imagination, art) in developing and using symbolic tools. We understand processes of development of symbolic tools as coordination between two types of relationships: the subject-object relationships and the subject-subject relationships. This coordination begins when a new,…

Finding an object in our environment is an important human ability that also represents a critical component of human foraging behavior. One type of information that aids efficient large-scale search is the likelihood of the object being in one location over another. In this study we investigated the conditions under which individuals respond to…

This article details the experimental research on frame effects that provides quantitative evidence that some types of frames have a greater ability to move and affect policy support than others. This method is particularly useful in showing the magnitude by which exposure to alternative ways of thinking about social issues alters the public's…

This study investigated the use of cognitive state verbs (CSVs) and complement clauses in children with specific language impairment (SLI) and their typically developing (TD) peers. In Study 1, conversational samples from 23 children with SLI (M = 6;2), 24 age-matched TD children (M = 6;2) and 21 vocabulary-matched TD children (M = 4;9) were…

In today's networked environment, online forums emerge as a popular form of social structures that have greater opportunities for learning in various organizational contexts. A plethora of studies have investigated the phenomenon to identify antecedent of its success, such as individual characteristics and organizational structure. However,…

The Virtual Chemical Vapor Deposition (CVD) Process Development Project provides the context for the two areas of the research presented in this dissertation. The first area, generally referred to as feedback in this dissertation, focuses on student learning and the interactions of students and instructors that take place in the project,…

What effects do different setups of museum exhibits have on visitors' conversations and interactions? The study reported here is an investigation of the role that labels and associated materials play in visitors' conversations and interactions at a heat camera exhibit. After we introduced a label to help visitors explore the insulating properties…

It is widely documented that the density property of rational numbers is challenging for students. The framework theory approach to conceptual change places this observation in the more general frame of problems faced by learners in the transition from natural to rational numbers. As students enrich, but do not restructure, their natural number…

Many schools are organised into departments which function as contexts that frame teachers' professional experiences in important ways. Some educational systems have adopted distributed forms of leadership within schools that rely strongly on the departmental structure and on the role of the department coordinator as teacher leader. This paper…

It is often claimed that engineering projects improve student achievement in mathematics and science, but research on this topic has shown that many projects do not live up to the claim (Teacher Advisory Council, 2009). Ideally, undertaking a science project should be motivating, while also helping students to understand the interplay between…

The central premise of this research is that blind and visually impaired (BVI) people cannot use the Internet effectively due to accessibility and usability problems. Use of the Internet is indispensable in today's education system that relies on Web-enhanced instruction (WEI). Therefore, BVI students cannot participate effectively in WEI. Extant…

Does the Internet facilitate anti-regime dissent within authoritarian states? I argue that the Internet fosters dissent mobilization through three factors: distance, decentralization and interaction. First, the Internet fosters dissent mobilization by allowing protesters to communicate relatively cheaply and instantaneously over great distances.…

This article reports on a study that analysed life history accounts of language learning. The key aim of the study was to understand how the experience of language learning was discursively constructed through recourse to particular cultural worlds and narrative strategies. The study contributes to the growing field of research using language…