Recent attempts have been made to find a robust method for comparing the variances of "J" dependent random variables. However, these procedures can give unsatisfactory results. Several new procedures that are derived heuristically are examined. The most effective method is based on the statistic derived by D. Quade. (TJH)

This article traces the historical and conceptual development of what is known as activity theory, from Vygotsky and Luria, to A. N. Leontev, to Engestrm, in order to illustrate what I see as two problems with the activity theoretic approach, especially as manifest in the work of Leontev and Engestrm: what I call the boundary and/or focus problem…

Purpose: This paper aims to sketch the emerging notion of auto-adaptive software when applied to e-learning software. Design/methodology/approach: The study and the implementation of the auto-adaptive architecture are based on the operational framework "ActiveTutor" that is used for teaching the topic of computer science programming in first-grade…

This paper uses the framework of distributed cognition to discuss benefits and constraints of technology adoption and use in social-constructive language learning scenarios. The purposes of this paper are (a) to describe how the open-ended knowledge construction and communication tools TEE (The Electronic Exercise) and EF-editor (Exercise Format…

As a stage-based model of learning, the Instructional Hierarchy offers a useful heuristic for organizing research on effective instructional strategies at different levels of skill proficiency. In this paper, we summarize and highlight the unique contributions of each empirical study presented in the special issue. We describe common…

In the "participation age", emerging cross-border, transnational communities driven by innovation and entrepreneurship initiatives--in short, international entrepreneurial communities--give impetus to the rise of international public goods. With varying intensity, a non-voting international mobile public--still a small but an increasing fraction…

Much research has highlighted incoherent implications of judgmental heuristics, yet other findings have demonstrated high correspondence between predictions and outcomes. At the same time, judgment has been well modeled in the form of as if linear models. Accepting the probabilistic nature of the environment, the authors use statistical tools to…

Humans appear to reason using two processing styles: System 1 processes that are quick, intuitive, and effortless and System 2 processes that are slow, analytical, and deliberate that occasionally correct the output of System 1. Four experiments suggest that System 2 processes are activated by metacognitive experiences of difficulty or disfluency…

This project reconciles historically distinct paradigms at the interface between individual and social choice theory, as well as between rational and behavioral decision theory. The authors combine a utility-maximizing prescriptive rule for sophisticated approval voting with the ignorance prior heuristic from behavioral decision research and two…

The authors of this article introduce students in their department's construction course to a variety of energy-saving practices and processes. They describe activities that could give students an opportunity to apply design methodology in the creative pursuit of a solution to an open-ended problem. An introductory lecture gives students the…

In "Speaking of Faith," radio journalist Krista Tippett recalls the time when she began to recognize the hypocrisy and contradictions in the behavior of the people around her. Tippett's experience is not only far from unusual, it is formative. It led her to make some important decisions in her life, including the desire never to live a life of…

A curriculum is a knowledge structure outlining what is to be learned in what order. The Australian curriculum for English emphasises creation of a "coherent" and "cumulative" "body of knowledge about how the English language works", with learning that is "portable and applicable to new settings across the school…

This article is a report on a study of the use of heuristics, shortcuts, and rules of thumb by middle-line managers in institutions of higher education in the United States and the United Kingdom. Using a nonprobability convenience sample, the coinvestigators interviewed 13 middle-line managers over 5 months from eight institutions. The results…

Current scholarship tells us that skills in teaming are essential for students and practitioners of professional communication. Writers must be able to cooperate with subject-matter experts and team members to make effective decisions and complete projects. Scholarship also suggests that rapid changes in technology and changes in teaming processes…

Purpose: This paper aims to contribute to the literature on beginning the principalship by identifying and illustrating key challenges that novice principals encounter in their first year for which they would benefit from improved preparation. Design/methodology/approach: The paper is a synthesis of a decade of research focusing on the principal…