In the Fourth Edition of Scale Development, Robert F. DeVellis demystifies measurement by emphasizing a logical rather than strictly mathematical understanding of concepts. The text supports readers in comprehending newer approaches to measurement, comparing them to classical approaches, and grasping more clearly the relative merits of each. This edition addresses new topics pertinent to modern measurement approaches and includes additional exercises and topics for class discussion. Available with Perusall—an eBook that makes it easier to prepare for class Perusall is an award-winning eBook platform featuring social annotation tools that allow students and instructors to collaboratively mark up and discuss their SAGE textbook. Backed by research and supported by technological innovations developed at Harvard University, this process of learning through collaborative annotation keeps your students engaged and makes teaching easier and more effective. Learn more.

The global development community is teeming with different ideas and interventions to improve the lives of the world's poorest people. Whether these succeed in having a transformative impact depends not just on their individual brilliance but on whether they can be brought to a scale where they reach millions of poor people. Getting to Scale explores what it takes to expand the reach of development solutions beyond an individual village or pilot program so they serve poor people everywhere. Each chapter documents one or more contemporary case studies, which together provide a body of evidence on how scale can be pursued. The book suggests that the challenge of scaling up can be divided into two solutions: financing interventions at scale, and managing delivery to large numbers of beneficiaries. Neither governments, donors, charities, nor corporations are usually capable of overcoming these twin challenges alone, indicating that partnerships are key to success. Scaling up is mission critical if extreme poverty is to be vanquished in our lifetime. Getting to Scale provides an invaluable resource for development practitioners, analysts, and students on a topic that remains largely unexplored and poorly understood. Contributors: Tessa Bold (Goethe University, Frankfurt), Wolfgang Fengler (World Bank, Nairobi), David Gartner (Arizona State University), Shunichiro Honda (JICA Research Institute), Michael Joseph (Vodafone), Hiroshi Kato (JICA), Mwangi Kimenyi (Brookings), Michael Kubzansky (Monitor Inclusive Markets), Germano Mwabu (University of Nairobi), Jane Nelson (Harvard Kennedy School), Alice Ng'ang'a (Strathmore University, Nairobi), Justin Sandefur (Center for Global Development), Pauline Vaughan (consultant), Chris West (Shell Foundation)

NATIONAL BESTSELLER • A leading economist answers one of today’s trickiest questions: Why do some great ideas make it big while others fail to take off? “Brilliant, practical, and grounded in the very latest research, this is by far the best book I’ve ever read on the how and why of scaling.”—Angela Duckworth, CEO of Character Lab and New York Times bestselling author of Grit ONE OF THE MOST ANTICIPATED BOOKS OF 2022—Men’s Journal “Scale” has become a favored buzzword in the startup world. But scale isn't just about accumulating more users or capturing more market share. It's about whether an idea that takes hold in a small group can do the same in a much larger one—whether you’re growing a small business, rolling out a diversity and inclusion program, or delivering billions of doses of a vaccine. Translating an idea into widespread impact, says University of Chicago economist John A. List, depends on one thing only: whether it can achieve “high voltage”—the ability to be replicated at scale. In The Voltage Effect, List explains that scalable ideas share a common set of attributes, while any number of attributes can doom an unscalable idea. Drawing on his original research, as well as fascinating examples from the realms of business, policymaking, education, and public health, he identifies five measurable vital signs that a scalable idea must possess, and offers proven strategies for avoiding voltage drops and engineering voltage gains. You’ll learn: • How celebrity chef Jamie Oliver expanded his restaurant empire by focusing on scalable “ingredients” (until it collapsed because talent doesn’t scale) • Why the failure to detect false positives early on caused the Reagan-era drug-prevention program to backfire at scale • How governments could deliver more services to more citizens if they focused on the last dollar spent • How one education center leveraged positive spillovers to narrow the achievement gap across the entire community • Why the right set of incentives, applied at scale, can boost voter turnout, increase clean energy use, encourage patients to consistently take their prescribed medication, and more. By understanding the science of scaling, we can drive change in our schools, workplaces, communities, and society at large. Because a better world can only be built at scale.

"Developing to Scale examines the techno-centric structure of global health practice through the history of the concept of appropriate technology. By looking at how certain technologies have been defined as more or less "appropriate" for the global south, based on assumptions about gender, race, culture, and environment, Heidi Morefield reveals the ways in which questions of technological scale have fundamentally shaped global health practice today. The idea that there was an "appropriate" level of technology, between the traditional and the modern, that would lead to sustainable social and economic development originated in the mid-1960s and gained considerable prominence in the 1970s. US foreign assistance oriented away from large-scale modernization projects, like water treatment facilities, toward small-scale, point-of-use technologies, like village water pumps, individual water filters, and oral rehydration salts. Practical shifts in assistance like this were a result of the enthusiastic adoption of the idea but also cuts in foreign aid budgets and other economic interests, principally those of newer donors from the high-tech sector; political interests; and the efforts of various activists, most notably post-colonial and anti-apartheid groups. Dreams of technological salvation have gained a new significance and foothold in the contemporary imagination, and Morefield's book provides the backstory, uncovering precisely how global health came to be understood largely as a problem to be solved with the right technology"--

Presents a people-centred approach to development.

'Scale Development' guides the reader toward the identification of the latent variable, the generation of an item pool, the format for measurement & the optimization of the scale length. Using exercises to illustrate the concepts, the text also includes advice about factor analytic strategies.